A286 Weight Calculator

A286 Weight Calculator & Guide – Calculate Steel Alloy Weight :root { –primary-color: #004a99; –success-color: #28a745; –background-color: #f8f9fa; –text-color: #333; –border-color: #ddd; –card-background: #fff; –shadow: 0 2px 5px rgba(0,0,0,0.1); } body { font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif; background-color: var(–background-color); color: var(–text-color); line-height: 1.6; margin: 0; padding: 0; } .container { max-width: 1000px; margin: 20px auto; padding: 20px; background-color: var(–card-background); border-radius: 8px; box-shadow: var(–shadow); } header { background-color: var(–primary-color); color: white; padding: 20px 0; text-align: center; margin-bottom: 20px; border-radius: 8px 8px 0 0; } header h1 { margin: 0; font-size: 2.5em; } main { padding: 0 15px; } h1, h2, h3 { color: var(–primary-color); } h1 { font-size: 2.2em; margin-bottom: 15px; } h2 { font-size: 1.8em; margin-top: 30px; margin-bottom: 15px; border-bottom: 2px solid var(–primary-color); padding-bottom: 5px; } h3 { font-size: 1.4em; margin-top: 25px; margin-bottom: 10px; } .loan-calc-container { background-color: var(–card-background); padding: 25px; border-radius: 8px; box-shadow: var(–shadow); margin-bottom: 30px; border: 1px solid var(–border-color); } .input-group { margin-bottom: 20px; text-align: left; } .input-group label { display: block; margin-bottom: 8px; font-weight: bold; color: var(–primary-color); } .input-group input[type="number"], .input-group select { width: calc(100% – 22px); padding: 10px; border: 1px solid var(–border-color); border-radius: 4px; font-size: 1em; box-sizing: border-box; } .input-group .helper-text { font-size: 0.85em; color: #666; margin-top: 5px; display: block; } .error-message { color: red; font-size: 0.9em; margin-top: 5px; display: none; /* Hidden by default */ } .button-group { display: flex; justify-content: space-between; margin-top: 25px; gap: 10px; } button { padding: 12px 20px; border: none; border-radius: 5px; cursor: pointer; font-size: 1em; font-weight: bold; transition: background-color 0.3s ease; } .btn-calculate { background-color: var(–primary-color); color: white; flex-grow: 1; } .btn-calculate:hover { background-color: #003366; } .btn-reset { background-color: #6c757d; color: white; } .btn-reset:hover { background-color: #5a6268; } .btn-copy { background-color: var(–success-color); color: white; } .btn-copy:hover { background-color: #218838; } #results { margin-top: 30px; padding: 20px; background-color: #e9ecef; border-radius: 8px; border: 1px solid var(–border-color); } #results h3 { margin-top: 0; color: var(–primary-color); text-align: center; } .result-item { margin-bottom: 15px; font-size: 1.1em; } .result-item strong { color: var(–primary-color); } .primary-result { font-size: 1.8em; font-weight: bold; color: var(–success-color); text-align: center; margin-bottom: 20px; padding: 15px; background-color: #d4edda; border-radius: 5px; border: 1px solid var(–success-color); } .formula-explanation { font-size: 0.95em; color: #555; margin-top: 15px; padding-top: 10px; border-top: 1px dashed #ccc; } table { width: 100%; border-collapse: collapse; margin-top: 20px; margin-bottom: 30px; } th, td { border: 1px solid var(–border-color); padding: 10px; text-align: left; } th { background-color: var(–primary-color); color: white; font-weight: bold; } td { background-color: var(–card-background); } caption { font-size: 1.1em; font-weight: bold; color: var(–primary-color); margin-bottom: 10px; caption-side: top; text-align: left; } canvas { display: block; margin: 20px auto; max-width: 100%; background-color: var(–card-background); border-radius: 5px; box-shadow: var(–shadow); } .article-content { margin-top: 40px; background-color: var(–card-background); padding: 30px; border-radius: 8px; box-shadow: var(–shadow); border: 1px solid var(–border-color); } .article-content p, .article-content ul, .article-content ol { margin-bottom: 15px; } .article-content li { margin-bottom: 8px; } .article-content a { color: var(–primary-color); text-decoration: none; } .article-content a:hover { text-decoration: underline; } .faq-item { margin-bottom: 15px; } .faq-item strong { display: block; color: var(–primary-color); margin-bottom: 5px; } .related-links ul { list-style: none; padding: 0; } .related-links li { margin-bottom: 10px; } .related-links a { font-weight: bold; } .related-links span { font-size: 0.9em; color: #555; display: block; margin-top: 3px; } .highlight { background-color: yellow; font-weight: bold; } @media (max-width: 768px) { .container { margin: 10px; padding: 15px; } header h1 { font-size: 1.8em; } h1 { font-size: 1.8em; } h2 { font-size: 1.5em; } h3 { font-size: 1.2em; } .button-group { flex-direction: column; } button { width: 100%; } .primary-result { font-size: 1.5em; } }

A286 Weight Calculator

A286 Weight Calculator

Calculate the weight of A286 stainless steel components based on their dimensions and shape.

Rod/Bar Sheet/Plate Tube (Round) Select the geometric shape of your A286 component.
Enter the diameter in millimeters (mm).
Enter the length in millimeters (mm).
Enter the width in millimeters (mm).
Enter the length in millimeters (mm).
Enter the thickness in millimeters (mm).
Enter the outer diameter in millimeters (mm).
Enter the wall thickness in millimeters (mm).
Enter the length in millimeters (mm).

Calculation Results

— kg
Volume: — mm³
Density of A286: 7.05 g/cm³
Material Used: A286 Stainless Steel
Formula Used: Weight = Volume × Density. Volume is calculated based on the selected shape and dimensions. Density is a standard value for A286 stainless steel.

Weight vs. Dimension

Material Properties of A286

A286 Stainless Steel Properties
Property Value Unit
Density 7.05 g/cm³
Melting Point 1377-1400 °C
Tensile Strength (min) 655 MPa
Yield Strength (min) 450 MPa
Elongation (min) 15 %

What is A286 Weight?

The term "A286 Weight" refers to the calculated mass or weight of a component made from A286 stainless steel. A286 is a precipitation-hardening iron-based superalloy known for its high strength, excellent corrosion resistance, and good performance at elevated temperatures, typically up to 1300°F (700°C). Understanding the weight of A286 components is crucial for various engineering, manufacturing, and logistical purposes. This includes determining material costs, ensuring structural integrity, calculating shipping expenses, and verifying material quantities for production.

Who Should Use an A286 Weight Calculator?

An A286 weight calculator is an invaluable tool for a wide range of professionals and industries:

  • Engineers: To estimate the weight of parts in aerospace, automotive, and industrial applications where A286 is commonly used.
  • Procurement Specialists: To accurately budget for raw materials and finished components.
  • Manufacturers: To manage inventory, optimize material usage, and ensure production accuracy.
  • Logistics and Shipping Companies: To determine shipping costs and ensure compliance with weight regulations.
  • Researchers and Developers: To analyze material properties and design new applications for A286.
  • Students and Educators: To learn about material science, engineering calculations, and the properties of specialized alloys.

Common Misconceptions about A286 Weight

Several misconceptions can arise regarding the weight of A286 steel:

  • "All stainless steels weigh the same": While stainless steels share similarities, different grades (like A286 compared to 304 or 316) have slightly different densities due to their unique alloy compositions, affecting their weight per unit volume.
  • "Weight is solely determined by size": While dimensions are primary, the specific alloy composition (and thus density) is a critical factor. A286 is denser than some other stainless steels.
  • "Calculated weight is always exact": Real-world weights can vary slightly due to manufacturing tolerances, surface finishes, and minor variations in alloy composition. The calculator provides a highly accurate estimate.

A286 Weight Formula and Mathematical Explanation

The fundamental principle behind calculating the weight of any material, including A286 stainless steel, is the relationship between its volume and its density. The formula is straightforward:

Weight = Volume × Density

Let's break down the components:

Volume Calculation

The volume calculation depends entirely on the geometric shape of the A286 component. Our calculator supports common shapes:

  • Rod/Bar (Cylindrical): Volume = π × (Diameter/2)² × Length
  • Sheet/Plate (Rectangular Prism): Volume = Width × Length × Thickness
  • Tube (Round – Hollow Cylinder): Volume = π × [(Outer Diameter/2)² – (Inner Diameter/2)²] × Length. Since Inner Diameter = Outer Diameter – 2 × Wall Thickness, the formula becomes: Volume = π × [(Outer Diameter/2)² – ((Outer Diameter – 2 × Wall Thickness)/2)²] × Length

Density of A286

Density is an intrinsic property of a material, representing its mass per unit volume. For A286 stainless steel, the typical density is approximately 7.05 grams per cubic centimeter (g/cm³) or 0.255 pounds per cubic inch (lb/in³). This value is relatively consistent across different manufacturers, though minor variations can occur.

Unit Conversion

To ensure accurate results, especially when input dimensions are in millimeters (mm) and density is often cited in g/cm³ or kg/m³, careful unit conversion is necessary. The calculator handles these conversions internally:

  • 1 mm = 0.1 cm
  • 1 mm³ = 0.001 cm³
  • 1000 mm³ = 1 cm³
  • 1,000,000,000 mm³ = 1 m³
  • 1 g/cm³ = 1000 kg/m³
  • 1 kg = 1000 g

The calculator typically takes dimensions in millimeters, calculates the volume in cubic millimeters (mm³), converts this volume to cubic centimeters (cm³), and then multiplies by the density in g/cm³ to get the weight in grams (g), finally converting to kilograms (kg) for a more practical unit.

Variables Table

Here's a summary of the variables involved:

A286 Weight Calculation Variables
Variable Meaning Unit (Input) Unit (Calculation) Typical Range
Shape Geometric form of the component N/A N/A Rod, Sheet, Tube
Diameter (Rod) Cross-sectional diameter of a rod mm cm 0.1 – 1000+
Length Longest dimension of the component mm cm 1 – 10000+
Width (Sheet) One of the planar dimensions of a sheet mm cm 10 – 3000+
Thickness (Sheet) The smallest dimension of a sheet mm cm 0.5 – 100+
Outer Diameter (Tube) Overall diameter of the tube mm cm 10 – 1000+
Wall Thickness (Tube) Thickness of the tube material mm cm 1 – 50+
Density (A286) Mass per unit volume of A286 steel g/cm³ g/cm³ ~7.05
Volume Space occupied by the component mm³ cm³ Varies
Weight Mass of the component kg g / kg Varies

Practical Examples (Real-World Use Cases)

Example 1: A286 Rod for Aerospace Component

An aerospace engineer needs to calculate the weight of a solid A286 rod that will be machined into a critical component. The rod has the following dimensions:

  • Shape: Rod
  • Diameter: 30 mm
  • Length: 500 mm

Calculation Steps:

  1. Convert dimensions to cm: Diameter = 3.0 cm, Length = 50.0 cm.
  2. Calculate Volume: Volume = π × (3.0 cm / 2)² × 50.0 cm = π × (1.5 cm)² × 50.0 cm = π × 2.25 cm² × 50.0 cm ≈ 353.43 cm³.
  3. Calculate Weight: Weight = Volume × Density = 353.43 cm³ × 7.05 g/cm³ ≈ 2491.7 g.
  4. Convert to kg: Weight ≈ 2.49 kg.

Result: The A286 rod weighs approximately 2.49 kg. This weight is important for calculating the overall mass of the final assembly and ensuring it meets aerospace weight restrictions.

Example 2: A286 Sheet for High-Temperature Flange

A manufacturer is producing a flange from A286 sheet metal for a high-temperature industrial application. The sheet dimensions are:

  • Shape: Sheet
  • Width: 200 mm
  • Length: 400 mm
  • Thickness: 8 mm

Calculation Steps:

  1. Convert dimensions to cm: Width = 20.0 cm, Length = 40.0 cm, Thickness = 0.8 cm.
  2. Calculate Volume: Volume = 20.0 cm × 40.0 cm × 0.8 cm = 640 cm³.
  3. Calculate Weight: Weight = Volume × Density = 640 cm³ × 7.05 g/cm³ ≈ 4512 g.
  4. Convert to kg: Weight ≈ 4.51 kg.

Result: The A286 sheet metal required for the flange weighs approximately 4.51 kg. This helps in ordering the correct amount of material and estimating manufacturing costs.

Example 3: A286 Tube for Exhaust System Component

An automotive engineer is designing a component for a high-performance exhaust system using A286 tubing. The specifications are:

  • Shape: Tube
  • Outer Diameter: 76 mm
  • Wall Thickness: 2 mm
  • Length: 1200 mm

Calculation Steps:

  1. Convert dimensions to cm: Outer Diameter = 7.6 cm, Wall Thickness = 0.2 cm, Length = 120.0 cm.
  2. Calculate Inner Diameter: Inner Diameter = Outer Diameter – 2 × Wall Thickness = 7.6 cm – 2 × 0.2 cm = 7.2 cm.
  3. Calculate Volume: Volume = π × [(7.6 cm/2)² – (7.2 cm/2)²] × 120.0 cm = π × [(3.8 cm)² – (3.6 cm)²] × 120.0 cm = π × [14.44 cm² – 12.96 cm²] × 120.0 cm = π × 1.48 cm² × 120.0 cm ≈ 557.5 cm³.
  4. Calculate Weight: Weight = Volume × Density = 557.5 cm³ × 7.05 g/cm³ ≈ 3930.4 g.
  5. Convert to kg: Weight ≈ 3.93 kg.

Result: The A286 tube section weighs approximately 3.93 kg. This is vital for ensuring the exhaust system's weight remains within design parameters.

How to Use This A286 Weight Calculator

Using the A286 Weight Calculator is simple and intuitive. Follow these steps:

  1. Select Component Shape: Choose the shape that best matches your A286 component (Rod/Bar, Sheet/Plate, or Tube) from the dropdown menu.
  2. Enter Dimensions: Based on the selected shape, input the required dimensions (e.g., diameter, length, width, thickness) in millimeters (mm). Ensure you use accurate measurements.
  3. View Results: Click the "Calculate Weight" button. The calculator will instantly display:
    • Primary Result: The total estimated weight of the A286 component in kilograms (kg).
    • Intermediate Values: The calculated volume (in mm³) and the density used (g/cm³).
    • Material Used: Confirmation that the calculation is based on A286 Stainless Steel.
  4. Understand the Formula: A brief explanation of the Weight = Volume × Density formula is provided.
  5. Analyze the Chart: The dynamic chart visualizes how weight changes with a key dimension (e.g., length or thickness), helping you understand scaling.
  6. Review Material Properties: The table provides key physical and mechanical properties of A286 steel for reference.
  7. Reset or Copy: Use the "Reset" button to clear all fields and start over. Use the "Copy Results" button to copy the main result, intermediate values, and key assumptions to your clipboard for use elsewhere.

Key Factors That Affect A286 Weight Results

While the calculator provides a precise estimate, several real-world factors can influence the actual weight of an A286 component:

  1. Dimensional Accuracy: Manufacturing tolerances mean that the actual dimensions of a part might slightly deviate from the design specifications. Even small variations in length, diameter, or thickness can accumulate, especially for large components.
  2. Alloy Composition Variations: Although A286 has a standard composition, minor variations between batches or manufacturers can lead to slight differences in density. Our calculator uses the standard average density (7.05 g/cm³).
  3. Surface Finish and Coatings: Machining processes, polishing, or the application of surface coatings (like plating or passivation) can add a small amount of weight. This calculator assumes a bare, as-manufactured surface.
  4. Hollow vs. Solid Sections: For tubular or hollow components, the accuracy of the wall thickness measurement is critical. Any deviation directly impacts the calculated volume and, consequently, the weight.
  5. Complex Geometries: The calculator handles basic shapes (rods, sheets, tubes). Components with complex curves, holes, or intricate features require more advanced CAD software for precise volume calculation.
  6. Temperature Effects: While density is relatively stable, significant temperature fluctuations can cause thermal expansion or contraction, slightly altering dimensions and thus weight. This calculator assumes standard ambient conditions.
  7. Material Waste: During manufacturing processes like machining or cutting, some material is inevitably lost as scrap (swarf or offcuts). The calculated weight represents the finished part, not the raw material initially required.

Frequently Asked Questions (FAQ)

Q1: What is the standard density of A286 stainless steel used in this calculator?

A: This calculator uses a standard density of 7.05 g/cm³ for A286 stainless steel. This is a widely accepted value for engineering calculations.

Q2: Can this calculator be used for A286 alloys with different heat treatments?

A: The density of A286 is generally consistent across different heat treatments (like solution treated or aged). The primary impact of heat treatment is on mechanical properties (strength, hardness), not density. Therefore, the calculator remains accurate.

Q3: What units should I use for the input dimensions?

A: Please enter all dimensions (diameter, length, width, thickness) in millimeters (mm). The calculator will handle the necessary conversions.

Q4: How accurate is the weight calculation?

A: The calculation is highly accurate based on the provided dimensions and the standard density of A286. Real-world weight may vary slightly due to manufacturing tolerances and surface conditions.

Q5: Does the calculator account for weight differences between different stainless steel grades?

A: Yes, this calculator is specifically for A286. It uses the density characteristic of A286. If you need to calculate the weight for other grades (like 304 or 316), you would need a different calculator or adjust the density value.

Q6: What if my component has a complex shape not listed?

A: For complex shapes, it's best to use CAD (Computer-Aided Design) software to determine the precise volume. You can then use the formula Weight = Volume × Density (ensuring units are consistent) or input the calculated volume into a simplified calculator if available.

Q7: Can I calculate the weight of a hollow rod or a square tube?

A: This calculator currently supports solid rods, flat sheets/plates, and round tubes. For hollow rods or square tubes, you would need to adapt the volume calculation formula accordingly (e.g., for a square tube: Volume = (Outer Width² – Inner Width²) × Length).

Q8: What is the difference between weight and mass?

A: In common usage, "weight" often refers to mass. Technically, weight is the force of gravity acting on a mass. This calculator computes the mass of the A286 component, typically expressed in kilograms (kg), which is the standard unit for material quantity.

Related Tools and Internal Resources

var densityA286 = 7.05; // g/cm³ var chartInstance = null; function updateInputs() { var shape = document.getElementById("shape").value; document.getElementById("rod-inputs").style.display = (shape === "rod") ? "block" : "none"; document.getElementById("sheet-inputs").style.display = (shape === "sheet") ? "block" : "none"; document.getElementById("tube-inputs").style.display = (shape === "tube") ? "block" : "none"; resetErrorMessages(); calculateWeight(); // Recalculate when shape changes } function resetErrorMessages() { var errorElements = document.querySelectorAll('.error-message'); for (var i = 0; i < errorElements.length; i++) { errorElements[i].textContent = ''; errorElements[i].style.display = 'none'; } var inputElements = document.querySelectorAll('.loan-calc-container input[type="number"], .loan-calc-container select'); for (var i = 0; i < inputElements.length; i++) { inputElements[i].style.borderColor = '#ddd'; } } function showError(elementId, message) { var errorElement = document.getElementById(elementId); if (errorElement) { errorElement.textContent = message; errorElement.style.display = 'block'; } var inputElement = document.getElementById(elementId.replace('Error', '')); if(inputElement) { inputElement.style.borderColor = 'red'; } } function isValidNumber(value) { return !isNaN(parseFloat(value)) && isFinite(value); } function calculateWeight() { var shape = document.getElementById("shape").value; var volumeMm3 = 0; var volumeCm3 = 0; var weightKg = 0; var isValid = true; resetErrorMessages(); if (shape === "rod") { var diameter = parseFloat(document.getElementById("rodDiameter").value); var length = parseFloat(document.getElementById("rodLength").value); if (!isValidNumber(diameter) || diameter <= 0) { showError("rodDiameterError", "Please enter a valid positive number for diameter."); isValid = false; } if (!isValidNumber(length) || length <= 0) { showError("rodLengthError", "Please enter a valid positive number for length."); isValid = false; } if (isValid) { var radius = diameter / 2; volumeMm3 = Math.PI * Math.pow(radius, 2) * length; } } else if (shape === "sheet") { var width = parseFloat(document.getElementById("sheetWidth").value); var length = parseFloat(document.getElementById("sheetLength").value); var thickness = parseFloat(document.getElementById("sheetThickness").value); if (!isValidNumber(width) || width <= 0) { showError("sheetWidthError", "Please enter a valid positive number for width."); isValid = false; } if (!isValidNumber(length) || length <= 0) { showError("sheetLengthError", "Please enter a valid positive number for length."); isValid = false; } if (!isValidNumber(thickness) || thickness <= 0) { showError("sheetThicknessError", "Please enter a valid positive number for thickness."); isValid = false; } if (isValid) { volumeMm3 = width * length * thickness; } } else if (shape === "tube") { var outerDiameter = parseFloat(document.getElementById("tubeOuterDiameter").value); var wallThickness = parseFloat(document.getElementById("tubeWallThickness").value); var length = parseFloat(document.getElementById("tubeLength").value); if (!isValidNumber(outerDiameter) || outerDiameter <= 0) { showError("tubeOuterDiameterError", "Please enter a valid positive number for outer diameter."); isValid = false; } if (!isValidNumber(wallThickness) || wallThickness <= 0) { showError("tubeWallThicknessError", "Please enter a valid positive number for wall thickness."); isValid = false; } if (!isValidNumber(length) || length <= 0) { showError("tubeLengthError", "Please enter a valid positive number for length."); isValid = false; } if (isValid) { var innerDiameter = outerDiameter – (2 * wallThickness); if (innerDiameter <= 0) { showError("tubeWallThicknessError", "Wall thickness is too large for the given outer diameter."); isValid = false; } else { var outerRadius = outerDiameter / 2; var innerRadius = innerDiameter / 2; volumeMm3 = Math.PI * (Math.pow(outerRadius, 2) – Math.pow(innerRadius, 2)) * length; } } } if (isValid) { volumeCm3 = volumeMm3 / 1000; // Convert mm³ to cm³ weightKg = (volumeCm3 * densityA286) / 1000; // Convert g to kg document.getElementById("volumeResult").textContent = volumeMm3.toFixed(2) + " mm³"; document.getElementById("densityResult").textContent = densityA286 + " g/cm³"; document.getElementById("primaryResult").textContent = weightKg.toFixed(3) + " kg"; updateChart(shape); // Update chart based on current inputs } else { document.getElementById("volumeResult").textContent = "– mm³"; document.getElementById("primaryResult").textContent = "– kg"; } } function resetCalculator() { document.getElementById("shape").value = "rod"; document.getElementById("rodDiameter").value = ""; document.getElementById("rodLength").value = ""; document.getElementById("sheetWidth").value = ""; document.getElementById("sheetLength").value = ""; document.getElementById("sheetThickness").value = ""; document.getElementById("tubeOuterDiameter").value = ""; document.getElementById("tubeWallThickness").value = ""; document.getElementById("tubeLength").value = ""; document.getElementById("volumeResult").textContent = "– mm³"; document.getElementById("primaryResult").textContent = "– kg"; resetErrorMessages(); updateInputs(); // Update display of input sections } function copyResults() { var primaryResult = document.getElementById("primaryResult").textContent; var volumeResult = document.getElementById("volumeResult").textContent; var densityResult = document.getElementById("densityResult").textContent; var materialResult = document.getElementById("materialResult").textContent; var formula = "Weight = Volume × Density"; var resultText = "A286 Weight Calculation Results:\n"; resultText += "———————————-\n"; resultText += "Weight: " + primaryResult + "\n"; resultText += "Volume: " + volumeResult + "\n"; resultText += "Density: " + densityResult + "\n"; resultText += "Material: " + materialResult + "\n"; resultText += "Formula: " + formula + "\n"; navigator.clipboard.writeText(resultText).then(function() { // Optional: Show a confirmation message var copyButton = document.querySelector('.btn-copy'); var originalText = copyButton.textContent; copyButton.textContent = 'Copied!'; setTimeout(function() { copyButton.textContent = originalText; }, 1500); }).catch(function(err) { console.error('Failed to copy results: ', err); // Fallback for older browsers or if clipboard API fails alert('Failed to copy results. Please copy manually:\n' + resultText); }); } function updateChart(shape) { var ctx = document.getElementById('weightChart').getContext('2d'); var labels = []; var dataSeries1 = []; // e.g., Weight var dataSeries2 = []; // e.g., Volume var maxDimValue = 1000; // Default max dimension for chart scaling var dimensionLabel = "Dimension (mm)"; // Determine the primary variable dimension and range for the chart if (shape === "rod") { dimensionLabel = "Length (mm)"; maxDimValue = parseFloat(document.getElementById("rodLength").value) || 1000; var diameter = parseFloat(document.getElementById("rodDiameter").value) || 25; if (diameter <= 0) diameter = 25; // Default if invalid for (var i = 1; i <= 10; i++) { var currentLength = (maxDimValue / 10) * i; labels.push(currentLength.toFixed(0)); var volMm3 = Math.PI * Math.pow(diameter / 2, 2) * currentLength; var volCm3 = volMm3 / 1000; var weightKg = (volCm3 * densityA286) / 1000; dataSeries1.push(weightKg); dataSeries2.push(volMm3 / 1000); // Volume in cm³ for comparison } } else if (shape === "sheet") { dimensionLabel = "Length (mm)"; maxDimValue = parseFloat(document.getElementById("sheetLength").value) || 1000; var thickness = parseFloat(document.getElementById("sheetThickness").value) || 5; if (thickness <= 0) thickness = 5; // Default if invalid for (var i = 1; i <= 10; i++) { var currentLength = (maxDimValue / 10) * i; labels.push(currentLength.toFixed(0)); var volMm3 = (parseFloat(document.getElementById("sheetWidth").value) || 500) * currentLength * thickness; var volCm3 = volMm3 / 1000; var weightKg = (volCm3 * densityA286) / 1000; dataSeries1.push(weightKg); dataSeries2.push(volMm3 / 1000); // Volume in cm³ } } else if (shape === "tube") { dimensionLabel = "Length (mm)"; maxDimValue = parseFloat(document.getElementById("tubeLength").value) || 1000; var outerDiameter = parseFloat(document.getElementById("tubeOuterDiameter").value) || 50; var wallThickness = parseFloat(document.getElementById("tubeWallThickness").value) || 3; if (outerDiameter <= 0 || wallThickness <= 0 || (outerDiameter – 2 * wallThickness) <= 0) { outerDiameter = 50; wallThickness = 3; // Reset to defaults if invalid } for (var i = 1; i <= 10; i++) { var currentLength = (maxDimValue / 10) * i; labels.push(currentLength.toFixed(0)); var outerRadius = outerDiameter / 2; var innerRadius = (outerDiameter – 2 * wallThickness) / 2; var volMm3 = Math.PI * (Math.pow(outerRadius, 2) – Math.pow(innerRadius, 2)) * currentLength; var volCm3 = volMm3 / 1000; var weightKg = (volCm3 * densityA286) / 1000; dataSeries1.push(weightKg); dataSeries2.push(volMm3 / 1000); // Volume in cm³ } } // Destroy previous chart instance if it exists if (chartInstance) { chartInstance.destroy(); } // Create new chart chartInstance = new Chart(ctx, { type: 'bar', // Use bar chart for better comparison of two series data: { labels: labels, datasets: [{ label: 'Estimated Weight (kg)', data: dataSeries1, backgroundColor: 'rgba(0, 74, 153, 0.6)', // Primary color borderColor: 'rgba(0, 74, 153, 1)', borderWidth: 1, yAxisID: 'y-weight' }, { label: 'Volume (cm³)', data: dataSeries2, backgroundColor: 'rgba(40, 167, 69, 0.6)', // Success color borderColor: 'rgba(40, 167, 69, 1)', borderWidth: 1, yAxisID: 'y-volume' }] }, options: { responsive: true, maintainAspectRatio: false, scales: { x: { title: { display: true, text: dimensionLabel } }, y-weight: { type: 'linear', position: 'left', title: { display: true, text: 'Weight (kg)' }, ticks: { beginAtZero: true } }, y-volume: { type: 'linear', position: 'right', title: { display: true, text: 'Volume (cm³)' }, ticks: { beginAtZero: true }, grid: { drawOnChartArea: false, // only want the grid lines for one axis to show up } } }, plugins: { title: { display: true, text: 'A286 Weight vs. ' + dimensionLabel.split(' ')[0] // e.g., Weight vs. Length }, legend: { position: 'top', } } } }); // Update legend manually if needed (Chart.js legend is usually sufficient) var legendHtml = 'Legend: '; legendHtml += '■ Estimated Weight (kg)'; legendHtml += '■ Volume (cm³)'; document.getElementById('chartLegend').innerHTML = legendHtml; } // Initial setup on page load document.addEventListener('DOMContentLoaded', function() { updateInputs(); // Set initial input visibility calculateWeight(); // Perform initial calculation // Add Chart.js library dynamically var script = document.createElement('script'); script.src = 'https://cdn.jsdelivr.net/npm/chart.js@3.7.0/dist/chart.min.js'; script.onload = function() { updateChart(document.getElementById("shape").value); // Update chart after library loads }; document.head.appendChild(script); });

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