Minimum Bending Radius Calculator for Sheet Metal<\/title>\n <style>\n \/* Scoped styles for Minimum Bending Radius Calculator - isolated from WordPress *\/\n #bend-radius-calculator {\n font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;\n max-width: 1000px;\n margin: 0 auto;\n padding: 16px;\n box-sizing: border-box;\n }\n \n #bend-radius-calculator *,\n #bend-radius-calculator *::before,\n #bend-radius-calculator *::after {\n box-sizing: border-box;\n }\n \n #bend-radius-calculator .calc-title {\n font-size: 1.875rem;\n font-weight: 700;\n color: #111827;\n margin-bottom: 1.5rem;\n text-align: left;\n line-height: 1.2;\n }\n \n #bend-radius-calculator .calc-card {\n background-color: #ffffff;\n border-radius: 1rem;\n box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);\n border: 1px solid #e5e7eb;\n overflow: hidden;\n }\n \n #bend-radius-calculator .calc-content {\n padding: 1.5rem;\n background-image: \n linear-gradient(rgba(0, 168, 255, 0.03) 1px, transparent 1px),\n linear-gradient(90deg, rgba(0, 168, 255, 0.03) 1px, transparent 1px);\n background-size: 20px 20px;\n }\n \n #bend-radius-calculator .calc-field {\n margin-bottom: 1.5rem;\n }\n \n #bend-radius-calculator .calc-label {\n display: block;\n font-size: 0.875rem;\n font-weight: 500;\n color: #374151;\n margin-bottom: 0.5rem;\n }\n \n #bend-radius-calculator .calc-select,\n #bend-radius-calculator .calc-input {\n width: 100%;\n padding: 0.75rem 1rem;\n border-radius: 0.5rem;\n border: 1px solid #d1d5db;\n background-color: #ffffff;\n color: #111827;\n font-size: 1rem;\n transition: all 0.2s ease;\n outline: none;\n }\n \n #bend-radius-calculator .calc-select:focus,\n #bend-radius-calculator .calc-input:focus {\n border-color: #00a8ff;\n box-shadow: 0 0 0 2px rgba(0, 168, 255, 0.3);\n }\n \n #bend-radius-calculator .calc-input-group {\n display: flex;\n gap: 0.75rem;\n }\n \n #bend-radius-calculator .calc-input-group .calc-input {\n flex: 1;\n }\n \n #bend-radius-calculator .calc-input-group .calc-select {\n width: auto;\n min-width: 80px;\n }\n \n #bend-radius-calculator .calc-hint {\n margin-top: 0.5rem;\n font-size: 0.875rem;\n color: #6b7280;\n }\n \n #bend-radius-calculator .calc-hint.mono {\n font-family: 'Roboto Mono', monospace;\n }\n \n #bend-radius-calculator .calc-angle-group {\n display: flex;\n align-items: center;\n gap: 0.75rem;\n }\n \n #bend-radius-calculator .calc-angle-group .calc-input {\n flex: 1;\n }\n \n #bend-radius-calculator .calc-angle-unit {\n color: #6b7280;\n white-space: nowrap;\n }\n \n #bend-radius-calculator .calc-btn-wrapper {\n display: flex;\n justify-content: center;\n margin-bottom: 1.5rem;\n }\n \n #bend-radius-calculator .calc-btn {\n padding: 1rem 3rem;\n background: linear-gradient(to right, #00a8ff, #2563eb);\n color: #ffffff;\n font-weight: 600;\n font-size: 1rem;\n border-radius: 0.5rem;\n border: none;\n cursor: pointer;\n transition: all 0.3s ease;\n box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);\n }\n \n #bend-radius-calculator .calc-btn:hover {\n background: linear-gradient(to right, #2563eb, #00a8ff);\n transform: scale(1.02);\n }\n \n #bend-radius-calculator .calc-btn:active {\n transform: scale(0.98);\n }\n \n #bend-radius-calculator .calc-results {\n display: none;\n border-top: 1px solid #e5e7eb;\n padding-top: 1.5rem;\n margin-top: 1.5rem;\n }\n \n #bend-radius-calculator .calc-results.visible {\n display: block;\n }\n \n #bend-radius-calculator .calc-result-main {\n text-align: center;\n margin-bottom: 1.5rem;\n }\n \n #bend-radius-calculator .calc-result-label {\n font-size: 0.875rem;\n color: #6b7280;\n text-transform: uppercase;\n letter-spacing: 0.05em;\n margin-bottom: 0.5rem;\n }\n \n #bend-radius-calculator .calc-result-value {\n display: flex;\n align-items: center;\n justify-content: center;\n gap: 0.5rem;\n }\n \n #bend-radius-calculator .calc-result-number {\n font-size: 3rem;\n font-weight: 700;\n color: #00a8ff;\n font-family: 'Roboto Mono', monospace;\n transition: transform 0.2s ease;\n }\n \n #bend-radius-calculator .calc-result-unit {\n font-size: 1.5rem;\n color: #6b7280;\n }\n \n #bend-radius-calculator .calc-info-grid {\n display: grid;\n grid-template-columns: repeat(2, 1fr);\n gap: 1rem;\n margin-bottom: 1.5rem;\n }\n \n #bend-radius-calculator .calc-info-box {\n background-color: #f9fafb;\n border-radius: 0.5rem;\n padding: 1rem;\n text-align: center;\n }\n \n #bend-radius-calculator .calc-info-label {\n font-size: 0.75rem;\n color: #6b7280;\n text-transform: uppercase;\n margin-bottom: 0.25rem;\n }\n \n #bend-radius-calculator .calc-info-value {\n font-size: 1.25rem;\n font-weight: 600;\n color: #111827;\n font-family: 'Roboto Mono', monospace;\n }\n \n #bend-radius-calculator .calc-message {\n border-radius: 0.5rem;\n padding: 1rem;\n display: none;\n }\n \n #bend-radius-calculator .calc-message.visible {\n display: block;\n }\n \n #bend-radius-calculator .calc-message-warning {\n background-color: #fef2f2;\n border: 1px solid #fecaca;\n }\n \n #bend-radius-calculator .calc-message-success {\n background-color: #f0fdf4;\n border: 1px solid #bbf7d0;\n }\n \n #bend-radius-calculator .calc-message-content {\n display: flex;\n align-items: flex-start;\n gap: 0.75rem;\n }\n \n #bend-radius-calculator .calc-message-icon {\n width: 1.25rem;\n height: 1.25rem;\n flex-shrink: 0;\n margin-top: 0.125rem;\n }\n \n #bend-radius-calculator .calc-message-icon-warning {\n color: #ff5252;\n }\n \n #bend-radius-calculator .calc-message-icon-success {\n color: #00c853;\n }\n \n #bend-radius-calculator .calc-message-title {\n font-weight: 600;\n margin-bottom: 0.25rem;\n }\n \n #bend-radius-calculator .calc-message-warning .calc-message-title {\n color: #991b1b;\n }\n \n #bend-radius-calculator .calc-message-success .calc-message-title {\n color: #166534;\n }\n \n #bend-radius-calculator .calc-message-text {\n font-size: 0.875rem;\n }\n \n #bend-radius-calculator .calc-message-warning .calc-message-text {\n color: #b91c1c;\n }\n \n #bend-radius-calculator .calc-message-success .calc-message-text {\n color: #15803d;\n }\n \n @keyframes bend-calc-pulse {\n 0%, 100% { opacity: 1; }\n 50% { opacity: 0.6; }\n }\n \n #bend-radius-calculator .calc-warning-pulse {\n animation: bend-calc-pulse 1.5s ease-in-out infinite;\n }\n <\/style>\n<\/head>\n<body>\n \n <div id=\"bend-radius-calculator\">\n <h2 class=\"calc-title\">Calculator<\/h2>\n \n <div class=\"calc-card\">\n <div class=\"calc-content\">\n \n <div class=\"calc-field\">\n <label class=\"calc-label\">Material Type<\/label>\n <select id=\"bendCalcMaterialType\" class=\"calc-select\">\n <option value=\"mild_steel\">Mild Steel (Low Carbon)<\/option>\n <option value=\"stainless_steel\">Stainless Steel (304\/316)<\/option>\n <option value=\"aluminum\">Aluminum (Soft\/Annealed)<\/option>\n <option value=\"high_tensile\">High-Tensile Steel<\/option>\n <\/select>\n <p id=\"bendCalcMaterialInfo\" class=\"calc-hint mono\">k-factor: 1.0 \u00d7 T<\/p>\n <\/div>\n\n \n <div class=\"calc-field\">\n <label class=\"calc-label\">Material Thickness (T)<\/label>\n <div class=\"calc-input-group\">\n <input type=\"number\" id=\"bendCalcThickness\" step=\"0.01\" min=\"0.1\" placeholder=\"Enter thickness\" class=\"calc-input\">\n <select id=\"bendCalcThicknessUnit\" class=\"calc-select\">\n <option value=\"mm\">mm<\/option>\n <option value=\"inch\">inch<\/option>\n <\/select>\n <\/div>\n <\/div>\n\n \n <div class=\"calc-field\">\n <label class=\"calc-label\">Bending Angle (Optional)<\/label>\n <div class=\"calc-angle-group\">\n <input type=\"number\" id=\"bendCalcAngle\" step=\"1\" min=\"1\" max=\"180\" placeholder=\"90\" class=\"calc-input\">\n <span class=\"calc-angle-unit\">degrees (\u00b0)<\/span>\n <\/div>\n <p class=\"calc-hint\">Standard bends are typically 90\u00b0. Tighter angles may require larger radius.<\/p>\n <\/div>\n\n \n <div class=\"calc-btn-wrapper\">\n <button id=\"bendCalcBtn\" class=\"calc-btn\">Calculate<\/button>\n <\/div>\n\n \n <div id=\"bendCalcResults\" class=\"calc-results\">\n <div class=\"calc-result-main\">\n <p class=\"calc-result-label\">Minimum Bend Radius (R<sub>min<\/sub>)<\/p>\n <div class=\"calc-result-value\">\n <span id=\"bendCalcResultValue\" class=\"calc-result-number\">0.00<\/span>\n <span id=\"bendCalcResultUnit\" class=\"calc-result-unit\">mm<\/span>\n <\/div>\n <\/div>\n\n <div class=\"calc-info-grid\">\n <div class=\"calc-info-box\">\n <p class=\"calc-info-label\">k-Factor Used<\/p>\n <p id=\"bendCalcKFactor\" class=\"calc-info-value\">1.0<\/p>\n <\/div>\n <div class=\"calc-info-box\">\n <p class=\"calc-info-label\">Formula<\/p>\n <p class=\"calc-info-value\">R = k \u00d7 T<\/p>\n <\/div>\n <\/div>\n\n \n <div id=\"bendCalcWarning\" class=\"calc-message calc-message-warning\">\n <div class=\"calc-message-content\">\n <svg class=\"calc-message-icon calc-message-icon-warning calc-warning-pulse\" fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\">\n <path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z\"\/>\n <\/svg>\n <div>\n <h4 class=\"calc-message-title\">Safety Warning<\/h4>\n <p id=\"bendCalcWarningText\" class=\"calc-message-text\">Risk of cracking at the bend line. Consider using a larger radius or different material.<\/p>\n <\/div>\n <\/div>\n <\/div>\n\n \n <div id=\"bendCalcSuccess\" class=\"calc-message calc-message-success\">\n <div class=\"calc-message-content\">\n <svg class=\"calc-message-icon calc-message-icon-success\" fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\">\n <path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z\"\/>\n <\/svg>\n <div>\n <h4 class=\"calc-message-title\">Safe Bend Radius<\/h4>\n <p class=\"calc-message-text\">This radius meets industry standards for the selected material and thickness.<\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <script>\n (function() {\n \/\/ Material data with k-factors\n const materials = {\n mild_steel: {\n name: 'Mild Steel (Low Carbon)',\n kFactor: 1.0,\n description: 'k-factor: 1.0 \u00d7 T',\n color: '#00a8ff'\n },\n stainless_steel: {\n name: 'Stainless Steel (304\/316)',\n kFactor: 1.5,\n description: 'k-factor: 1.5 \u00d7 T',\n color: '#ff9100'\n },\n aluminum: {\n name: 'Aluminum (Soft\/Annealed)',\n kFactor: 0.5,\n description: 'k-factor: 0.5 \u00d7 T',\n color: '#00c853'\n },\n high_tensile: {\n name: 'High-Tensile Steel',\n kFactor: 2.5,\n description: 'k-factor: 2.5 \u00d7 T',\n color: '#ff5252'\n }\n };\n\n \/\/ DOM Elements\n const materialSelect = document.getElementById('bendCalcMaterialType');\n const materialInfo = document.getElementById('bendCalcMaterialInfo');\n const thicknessInput = document.getElementById('bendCalcThickness');\n const thicknessUnitSelect = document.getElementById('bendCalcThicknessUnit');\n const bendAngleInput = document.getElementById('bendCalcAngle');\n const calculateBtn = document.getElementById('bendCalcBtn');\n const resultsSection = document.getElementById('bendCalcResults');\n const resultValue = document.getElementById('bendCalcResultValue');\n const resultUnit = document.getElementById('bendCalcResultUnit');\n const kFactorDisplay = document.getElementById('bendCalcKFactor');\n const warningBox = document.getElementById('bendCalcWarning');\n const successBox = document.getElementById('bendCalcSuccess');\n\n \/\/ Update material info on selection change\n materialSelect.addEventListener('change', function() {\n const material = materials[materialSelect.value];\n materialInfo.textContent = material.description;\n materialInfo.style.color = material.color;\n });\n\n \/\/ Convert inches to mm\n function convertToMm(value, unit) {\n return unit === 'inch' ? value * 25.4 : value;\n }\n\n \/\/ Convert mm to inches\n function convertToInch(value) {\n return value \/ 25.4;\n }\n\n \/\/ Calculate minimum bend radius\n function calculate() {\n const material = materials[materialSelect.value];\n const thickness = parseFloat(thicknessInput.value);\n const unit = thicknessUnitSelect.value;\n let bendAngle = parseFloat(bendAngleInput.value);\n\n if (isNaN(thickness) || thickness <= 0) {\n alert('Please enter a valid thickness value.');\n return;\n }\n\n \/\/ Default bend angle to 90 if not specified\n if (isNaN(bendAngle) || bendAngle <= 0) {\n bendAngle = 90;\n }\n\n \/\/ Convert to mm for calculation\n const thicknessMm = convertToMm(thickness, unit);\n \n \/\/ Calculate minimum bend radius\n let minRadius = material.kFactor * thicknessMm;\n\n \/\/ Adjust for bend angle (tighter angles need slightly larger radius)\n if (bendAngle < 90) {\n const angleAdjustment = 1 + ((90 - bendAngle) \/ 90) * 0.2;\n minRadius *= angleAdjustment;\n }\n\n \/\/ Display result in the same unit as input\n let displayValue, displayUnit;\n if (unit === 'inch') {\n displayValue = convertToInch(minRadius).toFixed(3);\n displayUnit = 'inch';\n } else {\n displayValue = minRadius.toFixed(2);\n displayUnit = 'mm';\n }\n\n resultValue.textContent = displayValue;\n resultUnit.textContent = displayUnit;\n kFactorDisplay.textContent = material.kFactor.toString();\n\n \/\/ Show warning for high-tensile steel or very tight bends\n if (material.kFactor >= 2.0 || bendAngle < 60) {\n warningBox.classList.add('visible');\n successBox.classList.remove('visible');\n \n if (bendAngle < 60) {\n document.getElementById('bendCalcWarningText').textContent = \n 'Bending angle of ' + bendAngle + '\u00b0 is very acute. Risk of cracking at the bend line. Consider using a larger radius or annealing the material.';\n } else {\n document.getElementById('bendCalcWarningText').textContent = \n material.name + ' has low ductility. Risk of cracking at the bend line. Consider using a larger radius or different material.';\n }\n } else {\n warningBox.classList.remove('visible');\n successBox.classList.add('visible');\n }\n\n \/\/ Show results section\n resultsSection.classList.add('visible');\n\n \/\/ Animate result\n resultValue.style.transform = 'scale(1.1)';\n setTimeout(function() {\n resultValue.style.transform = 'scale(1)';\n }, 200);\n }\n\n \/\/ Event listeners\n calculateBtn.addEventListener('click', calculate);\n\n \/\/ Calculate on Enter key\n [thicknessInput, bendAngleInput].forEach(function(input) {\n input.addEventListener('keypress', function(e) {\n if (e.key === 'Enter') {\n calculate();\n }\n });\n });\n })();\n <\/script>\n<\/body>\n<\/html>\n\n","protected":false},"excerpt":{"rendered":"<p>The Minimum Bending Radius Calculator for Sheet Metal is an essential engineering tool designed to help manufacturers, fabricators, and design engineers accurately determine the smallest…<\/p>","protected":false},"author":2,"featured_media":24333,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"pmpro_default_level":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[8413],"tags":[8479,8480,4700],"class_list":["post-24332","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unit-and-industry-standard-conversion","tag-bending-radius-calculator","tag-metal-fabrication-tools","tag-sheet-metal-bending","pmpro-has-access"],"acf":[],"jetpack_featured_media_url":"https:\/\/www.mechstream.com\/wp-content\/uploads\/2026\/02\/Minimum-Bending-Radius-Calculator-for-Sheet-Metal.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/posts\/24332","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/comments?post=24332"}],"version-history":[{"count":0,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/posts\/24332\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/media\/24333"}],"wp:attachment":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/media?parent=24332"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/categories?post=24332"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/tags?post=24332"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}

{"id":24332,"date":"2026-02-12T06:18:15","date_gmt":"2026-02-12T06:18:15","guid":{"rendered":"https:\/\/www.mechstream.com\/?p=24332"},"modified":"2026-02-12T06:18:19","modified_gmt":"2026-02-12T06:18:19","slug":"minimum-bending-radius-calculator-for-sheet-metal","status":"publish","type":"post","link":"https:\/\/www.mechstream.com\/fr\/minimum-bending-radius-calculator-for-sheet-metal\/","title":{"rendered":"Minimum Bending Radius Calculator for Sheet Metal"},"content":{"rendered":"\n

The Minimum Bending Radius Calculator for Sheet Metal<\/strong> is an essential engineering tool designed to help manufacturers, fabricators, and design engineers accurately determine the smallest allowable bending radius for different sheet metal materials and thicknesses. Using a reliable Minimum Bending Radius Calculator for Sheet Metal<\/strong> helps prevent cracking, excessive thinning, and structural failure during the bending process.<\/p>\n\n\n\n

This calculator considers key factors such as material type, tensile strength, thickness, and forming method to ensure safe and efficient bending operations. It is especially useful in press brake applications, custom metal fabrication, and precision manufacturing environments where maintaining dimensional accuracy and surface quality is critical.<\/p>\n\n\n\n

By calculating the correct minimum bending radius in advance, manufacturers can reduce trial-and-error adjustments, improve production efficiency, extend tooling life, and ensure consistent bending quality. Whether working with stainless steel, aluminum, or carbon steel, this calculator supports optimized sheet metal design and cost-effective manufacturing processes.<\/p>\n\n\n\n\n\n\n \n \n \n \n Minimum Bending Radius Calculator for Sheet Metal<\/title>\n <style>\n \/* Scoped styles for Minimum Bending Radius Calculator - isolated from WordPress *\/\n #bend-radius-calculator {\n font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;\n max-width: 1000px;\n margin: 0 auto;\n padding: 16px;\n box-sizing: border-box;\n }\n \n #bend-radius-calculator *,\n #bend-radius-calculator *::before,\n #bend-radius-calculator *::after {\n box-sizing: border-box;\n }\n \n #bend-radius-calculator .calc-title {\n font-size: 1.875rem;\n font-weight: 700;\n color: #111827;\n margin-bottom: 1.5rem;\n text-align: left;\n line-height: 1.2;\n }\n \n #bend-radius-calculator .calc-card {\n background-color: #ffffff;\n border-radius: 1rem;\n box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);\n border: 1px solid #e5e7eb;\n overflow: hidden;\n }\n \n #bend-radius-calculator .calc-content {\n padding: 1.5rem;\n background-image: \n linear-gradient(rgba(0, 168, 255, 0.03) 1px, transparent 1px),\n linear-gradient(90deg, rgba(0, 168, 255, 0.03) 1px, transparent 1px);\n background-size: 20px 20px;\n }\n \n #bend-radius-calculator .calc-field {\n margin-bottom: 1.5rem;\n }\n \n #bend-radius-calculator .calc-label {\n display: block;\n font-size: 0.875rem;\n font-weight: 500;\n color: #374151;\n margin-bottom: 0.5rem;\n }\n \n #bend-radius-calculator .calc-select,\n #bend-radius-calculator .calc-input {\n width: 100%;\n padding: 0.75rem 1rem;\n border-radius: 0.5rem;\n border: 1px solid #d1d5db;\n background-color: #ffffff;\n color: #111827;\n font-size: 1rem;\n transition: all 0.2s ease;\n outline: none;\n }\n \n #bend-radius-calculator .calc-select:focus,\n #bend-radius-calculator .calc-input:focus {\n border-color: #00a8ff;\n box-shadow: 0 0 0 2px rgba(0, 168, 255, 0.3);\n }\n \n #bend-radius-calculator .calc-input-group {\n display: flex;\n gap: 0.75rem;\n }\n \n #bend-radius-calculator .calc-input-group .calc-input {\n flex: 1;\n }\n \n #bend-radius-calculator .calc-input-group .calc-select {\n width: auto;\n min-width: 80px;\n }\n \n #bend-radius-calculator .calc-hint {\n margin-top: 0.5rem;\n font-size: 0.875rem;\n color: #6b7280;\n }\n \n #bend-radius-calculator .calc-hint.mono {\n font-family: 'Roboto Mono', monospace;\n }\n \n #bend-radius-calculator .calc-angle-group {\n display: flex;\n align-items: center;\n gap: 0.75rem;\n }\n \n #bend-radius-calculator .calc-angle-group .calc-input {\n flex: 1;\n }\n \n #bend-radius-calculator .calc-angle-unit {\n color: #6b7280;\n white-space: nowrap;\n }\n \n #bend-radius-calculator .calc-btn-wrapper {\n display: flex;\n justify-content: center;\n margin-bottom: 1.5rem;\n }\n \n #bend-radius-calculator .calc-btn {\n padding: 1rem 3rem;\n background: linear-gradient(to right, #00a8ff, #2563eb);\n color: #ffffff;\n font-weight: 600;\n font-size: 1rem;\n border-radius: 0.5rem;\n border: none;\n cursor: pointer;\n transition: all 0.3s ease;\n box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);\n }\n \n #bend-radius-calculator .calc-btn:hover {\n background: linear-gradient(to right, #2563eb, #00a8ff);\n transform: scale(1.02);\n }\n \n #bend-radius-calculator .calc-btn:active {\n transform: scale(0.98);\n }\n \n #bend-radius-calculator .calc-results {\n display: none;\n border-top: 1px solid #e5e7eb;\n padding-top: 1.5rem;\n margin-top: 1.5rem;\n }\n \n #bend-radius-calculator .calc-results.visible {\n display: block;\n }\n \n #bend-radius-calculator .calc-result-main {\n text-align: center;\n margin-bottom: 1.5rem;\n }\n \n #bend-radius-calculator .calc-result-label {\n font-size: 0.875rem;\n color: #6b7280;\n text-transform: uppercase;\n letter-spacing: 0.05em;\n margin-bottom: 0.5rem;\n }\n \n #bend-radius-calculator .calc-result-value {\n display: flex;\n align-items: center;\n justify-content: center;\n gap: 0.5rem;\n }\n \n #bend-radius-calculator .calc-result-number {\n font-size: 3rem;\n font-weight: 700;\n color: #00a8ff;\n font-family: 'Roboto Mono', monospace;\n transition: transform 0.2s ease;\n }\n \n #bend-radius-calculator .calc-result-unit {\n font-size: 1.5rem;\n color: #6b7280;\n }\n \n #bend-radius-calculator .calc-info-grid {\n display: grid;\n grid-template-columns: repeat(2, 1fr);\n gap: 1rem;\n margin-bottom: 1.5rem;\n }\n \n #bend-radius-calculator .calc-info-box {\n background-color: #f9fafb;\n border-radius: 0.5rem;\n padding: 1rem;\n text-align: center;\n }\n \n #bend-radius-calculator .calc-info-label {\n font-size: 0.75rem;\n color: #6b7280;\n text-transform: uppercase;\n margin-bottom: 0.25rem;\n }\n \n #bend-radius-calculator .calc-info-value {\n font-size: 1.25rem;\n font-weight: 600;\n color: #111827;\n font-family: 'Roboto Mono', monospace;\n }\n \n #bend-radius-calculator .calc-message {\n border-radius: 0.5rem;\n padding: 1rem;\n display: none;\n }\n \n #bend-radius-calculator .calc-message.visible {\n display: block;\n }\n \n #bend-radius-calculator .calc-message-warning {\n background-color: #fef2f2;\n border: 1px solid #fecaca;\n }\n \n #bend-radius-calculator .calc-message-success {\n background-color: #f0fdf4;\n border: 1px solid #bbf7d0;\n }\n \n #bend-radius-calculator .calc-message-content {\n display: flex;\n align-items: flex-start;\n gap: 0.75rem;\n }\n \n #bend-radius-calculator .calc-message-icon {\n width: 1.25rem;\n height: 1.25rem;\n flex-shrink: 0;\n margin-top: 0.125rem;\n }\n \n #bend-radius-calculator .calc-message-icon-warning {\n color: #ff5252;\n }\n \n #bend-radius-calculator .calc-message-icon-success {\n color: #00c853;\n }\n \n #bend-radius-calculator .calc-message-title {\n font-weight: 600;\n margin-bottom: 0.25rem;\n }\n \n #bend-radius-calculator .calc-message-warning .calc-message-title {\n color: #991b1b;\n }\n \n #bend-radius-calculator .calc-message-success .calc-message-title {\n color: #166534;\n }\n \n #bend-radius-calculator .calc-message-text {\n font-size: 0.875rem;\n }\n \n #bend-radius-calculator .calc-message-warning .calc-message-text {\n color: #b91c1c;\n }\n \n #bend-radius-calculator .calc-message-success .calc-message-text {\n color: #15803d;\n }\n \n @keyframes bend-calc-pulse {\n 0%, 100% { opacity: 1; }\n 50% { opacity: 0.6; }\n }\n \n #bend-radius-calculator .calc-warning-pulse {\n animation: bend-calc-pulse 1.5s ease-in-out infinite;\n }\n <\/style>\n<\/head>\n<body>\n \n <div id=\"bend-radius-calculator\">\n <h2 class=\"calc-title\">Calculator<\/h2>\n \n <div class=\"calc-card\">\n <div class=\"calc-content\">\n \n <div class=\"calc-field\">\n <label class=\"calc-label\">Material Type<\/label>\n <select id=\"bendCalcMaterialType\" class=\"calc-select\">\n <option value=\"mild_steel\">Mild Steel (Low Carbon)<\/option>\n <option value=\"stainless_steel\">Stainless Steel (304\/316)<\/option>\n <option value=\"aluminum\">Aluminum (Soft\/Annealed)<\/option>\n <option value=\"high_tensile\">High-Tensile Steel<\/option>\n <\/select>\n <p id=\"bendCalcMaterialInfo\" class=\"calc-hint mono\">k-factor: 1.0 \u00d7 T<\/p>\n <\/div>\n\n \n <div class=\"calc-field\">\n <label class=\"calc-label\">Material Thickness (T)<\/label>\n <div class=\"calc-input-group\">\n <input type=\"number\" id=\"bendCalcThickness\" step=\"0.01\" min=\"0.1\" placeholder=\"Enter thickness\" class=\"calc-input\">\n <select id=\"bendCalcThicknessUnit\" class=\"calc-select\">\n <option value=\"mm\">mm<\/option>\n <option value=\"inch\">inch<\/option>\n <\/select>\n <\/div>\n <\/div>\n\n \n <div class=\"calc-field\">\n <label class=\"calc-label\">Bending Angle (Optional)<\/label>\n <div class=\"calc-angle-group\">\n <input type=\"number\" id=\"bendCalcAngle\" step=\"1\" min=\"1\" max=\"180\" placeholder=\"90\" class=\"calc-input\">\n <span class=\"calc-angle-unit\">degrees (\u00b0)<\/span>\n <\/div>\n <p class=\"calc-hint\">Standard bends are typically 90\u00b0. Tighter angles may require larger radius.<\/p>\n <\/div>\n\n \n <div class=\"calc-btn-wrapper\">\n <button id=\"bendCalcBtn\" class=\"calc-btn\">Calculate<\/button>\n <\/div>\n\n \n <div id=\"bendCalcResults\" class=\"calc-results\">\n <div class=\"calc-result-main\">\n <p class=\"calc-result-label\">Minimum Bend Radius (R<sub>min<\/sub>)<\/p>\n <div class=\"calc-result-value\">\n <span id=\"bendCalcResultValue\" class=\"calc-result-number\">0.00<\/span>\n <span id=\"bendCalcResultUnit\" class=\"calc-result-unit\">mm<\/span>\n <\/div>\n <\/div>\n\n <div class=\"calc-info-grid\">\n <div class=\"calc-info-box\">\n <p class=\"calc-info-label\">k-Factor Used<\/p>\n <p id=\"bendCalcKFactor\" class=\"calc-info-value\">1.0<\/p>\n <\/div>\n <div class=\"calc-info-box\">\n <p class=\"calc-info-label\">Formula<\/p>\n <p class=\"calc-info-value\">R = k \u00d7 T<\/p>\n <\/div>\n <\/div>\n\n \n <div id=\"bendCalcWarning\" class=\"calc-message calc-message-warning\">\n <div class=\"calc-message-content\">\n <svg class=\"calc-message-icon calc-message-icon-warning calc-warning-pulse\" fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\">\n <path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M12 9v2m0 4h.01m-6.938 4h13.856c1.54 0 2.502-1.667 1.732-3L13.732 4c-.77-1.333-2.694-1.333-3.464 0L3.34 16c-.77 1.333.192 3 1.732 3z\"\/>\n <\/svg>\n <div>\n <h4 class=\"calc-message-title\">Safety Warning<\/h4>\n <p id=\"bendCalcWarningText\" class=\"calc-message-text\">Risk of cracking at the bend line. Consider using a larger radius or different material.<\/p>\n <\/div>\n <\/div>\n <\/div>\n\n \n <div id=\"bendCalcSuccess\" class=\"calc-message calc-message-success\">\n <div class=\"calc-message-content\">\n <svg class=\"calc-message-icon calc-message-icon-success\" fill=\"none\" stroke=\"currentColor\" viewBox=\"0 0 24 24\">\n <path stroke-linecap=\"round\" stroke-linejoin=\"round\" stroke-width=\"2\" d=\"M9 12l2 2 4-4m6 2a9 9 0 11-18 0 9 9 0 0118 0z\"\/>\n <\/svg>\n <div>\n <h4 class=\"calc-message-title\">Safe Bend Radius<\/h4>\n <p class=\"calc-message-text\">This radius meets industry standards for the selected material and thickness.<\/p>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n <\/div>\n\n <script>\n (function() {\n \/\/ Material data with k-factors\n const materials = {\n mild_steel: {\n name: 'Mild Steel (Low Carbon)',\n kFactor: 1.0,\n description: 'k-factor: 1.0 \u00d7 T',\n color: '#00a8ff'\n },\n stainless_steel: {\n name: 'Stainless Steel (304\/316)',\n kFactor: 1.5,\n description: 'k-factor: 1.5 \u00d7 T',\n color: '#ff9100'\n },\n aluminum: {\n name: 'Aluminum (Soft\/Annealed)',\n kFactor: 0.5,\n description: 'k-factor: 0.5 \u00d7 T',\n color: '#00c853'\n },\n high_tensile: {\n name: 'High-Tensile Steel',\n kFactor: 2.5,\n description: 'k-factor: 2.5 \u00d7 T',\n color: '#ff5252'\n }\n };\n\n \/\/ DOM Elements\n const materialSelect = document.getElementById('bendCalcMaterialType');\n const materialInfo = document.getElementById('bendCalcMaterialInfo');\n const thicknessInput = document.getElementById('bendCalcThickness');\n const thicknessUnitSelect = document.getElementById('bendCalcThicknessUnit');\n const bendAngleInput = document.getElementById('bendCalcAngle');\n const calculateBtn = document.getElementById('bendCalcBtn');\n const resultsSection = document.getElementById('bendCalcResults');\n const resultValue = document.getElementById('bendCalcResultValue');\n const resultUnit = document.getElementById('bendCalcResultUnit');\n const kFactorDisplay = document.getElementById('bendCalcKFactor');\n const warningBox = document.getElementById('bendCalcWarning');\n const successBox = document.getElementById('bendCalcSuccess');\n\n \/\/ Update material info on selection change\n materialSelect.addEventListener('change', function() {\n const material = materials[materialSelect.value];\n materialInfo.textContent = material.description;\n materialInfo.style.color = material.color;\n });\n\n \/\/ Convert inches to mm\n function convertToMm(value, unit) {\n return unit === 'inch' ? value * 25.4 : value;\n }\n\n \/\/ Convert mm to inches\n function convertToInch(value) {\n return value \/ 25.4;\n }\n\n \/\/ Calculate minimum bend radius\n function calculate() {\n const material = materials[materialSelect.value];\n const thickness = parseFloat(thicknessInput.value);\n const unit = thicknessUnitSelect.value;\n let bendAngle = parseFloat(bendAngleInput.value);\n\n if (isNaN(thickness) || thickness <= 0) {\n alert('Please enter a valid thickness value.');\n return;\n }\n\n \/\/ Default bend angle to 90 if not specified\n if (isNaN(bendAngle) || bendAngle <= 0) {\n bendAngle = 90;\n }\n\n \/\/ Convert to mm for calculation\n const thicknessMm = convertToMm(thickness, unit);\n \n \/\/ Calculate minimum bend radius\n let minRadius = material.kFactor * thicknessMm;\n\n \/\/ Adjust for bend angle (tighter angles need slightly larger radius)\n if (bendAngle < 90) {\n const angleAdjustment = 1 + ((90 - bendAngle) \/ 90) * 0.2;\n minRadius *= angleAdjustment;\n }\n\n \/\/ Display result in the same unit as input\n let displayValue, displayUnit;\n if (unit === 'inch') {\n displayValue = convertToInch(minRadius).toFixed(3);\n displayUnit = 'inch';\n } else {\n displayValue = minRadius.toFixed(2);\n displayUnit = 'mm';\n }\n\n resultValue.textContent = displayValue;\n resultUnit.textContent = displayUnit;\n kFactorDisplay.textContent = material.kFactor.toString();\n\n \/\/ Show warning for high-tensile steel or very tight bends\n if (material.kFactor >= 2.0 || bendAngle < 60) {\n warningBox.classList.add('visible');\n successBox.classList.remove('visible');\n \n if (bendAngle < 60) {\n document.getElementById('bendCalcWarningText').textContent = \n 'Bending angle of ' + bendAngle + '\u00b0 is very acute. Risk of cracking at the bend line. Consider using a larger radius or annealing the material.';\n } else {\n document.getElementById('bendCalcWarningText').textContent = \n material.name + ' has low ductility. Risk of cracking at the bend line. Consider using a larger radius or different material.';\n }\n } else {\n warningBox.classList.remove('visible');\n successBox.classList.add('visible');\n }\n\n \/\/ Show results section\n resultsSection.classList.add('visible');\n\n \/\/ Animate result\n resultValue.style.transform = 'scale(1.1)';\n setTimeout(function() {\n resultValue.style.transform = 'scale(1)';\n }, 200);\n }\n\n \/\/ Event listeners\n calculateBtn.addEventListener('click', calculate);\n\n \/\/ Calculate on Enter key\n [thicknessInput, bendAngleInput].forEach(function(input) {\n input.addEventListener('keypress', function(e) {\n if (e.key === 'Enter') {\n calculate();\n }\n });\n });\n })();\n <\/script>\n<\/body>\n<\/html>\n\n","protected":false},"excerpt":{"rendered":"<p>The Minimum Bending Radius Calculator for Sheet Metal is an essential engineering tool designed to help manufacturers, fabricators, and design engineers accurately determine the smallest…<\/p>","protected":false},"author":2,"featured_media":24333,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"pmpro_default_level":"","_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[8413],"tags":[8479,8480,4700],"class_list":["post-24332","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-unit-and-industry-standard-conversion","tag-bending-radius-calculator","tag-metal-fabrication-tools","tag-sheet-metal-bending","pmpro-has-access"],"acf":[],"jetpack_featured_media_url":"https:\/\/www.mechstream.com\/wp-content\/uploads\/2026\/02\/Minimum-Bending-Radius-Calculator-for-Sheet-Metal.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/posts\/24332","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/comments?post=24332"}],"version-history":[{"count":0,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/posts\/24332\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/media\/24333"}],"wp:attachment":[{"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/media?parent=24332"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/categories?post=24332"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.mechstream.com\/fr\/wp-json\/wp\/v2\/tags?post=24332"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}