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UTS to Hardness Conversion:
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The UTS (Ultimate Tensile Strength) to Hardness conversion provides an approximate relationship between a material's tensile strength and its Brinell hardness number (HB). This empirical relationship is useful for material selection and quality control in engineering applications.
The calculator uses the conversion formula:
Where:
Explanation: This approximation works well for many steels but may vary for other materials. The relationship is based on empirical data showing a correlation between hardness and tensile strength.
Details: Converting between hardness and tensile strength is valuable when only one property is known or when comparing material specifications. Hardness tests are often simpler and less destructive than tensile tests.
Tips: Enter the ultimate tensile strength in MPa. The value must be positive. The calculator provides an approximate Brinell hardness number.
Q1: How accurate is this conversion?
A: It provides a rough estimate (±10-15%) for many steels but may be less accurate for other materials or heat-treated alloys.
Q2: Does this work for all materials?
A: No, it works best for carbon and low-alloy steels. Different conversion factors may be needed for other materials like aluminum or stainless steel.
Q3: Why is hardness testing preferred over tensile testing?
A: Hardness testing is quicker, less expensive, and non-destructive compared to tensile testing which requires specialized equipment and destroys the sample.
Q4: What are typical hardness values for common materials?
A: Mild steel ~120-150 HB, tool steel ~200-300 HB, hardened steel >500 HB. Aluminum alloys typically range from 20-150 HB.
Q5: Can this conversion be used for quality control?
A: Yes, for preliminary assessments, but critical applications should use actual hardness or tensile tests for precise measurements.