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HRC to Tensile Strength Formula:
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The HRC to Tensile Strength formula provides an approximate conversion between Rockwell C hardness (HRC) and ultimate tensile strength (UTS) in megapascals (MPa). This empirical relationship is useful for quick estimations in materials science and engineering applications.
The calculator uses the following linear approximation:
Where:
Explanation: The formula provides a rough estimate of tensile strength based on hardness measurements, with the slope (3.2) representing the rate of increase in MPa per HRC point and the intercept (600) being the base strength.
Details: Tensile strength is a critical mechanical property that indicates the maximum stress a material can withstand while being stretched or pulled before breaking. Estimating it from hardness tests allows for non-destructive material characterization.
Tips: Enter a valid HRC value between 0 and 70. The calculator will provide the estimated tensile strength in MPa. Note that this is an approximation and actual values may vary based on material composition and heat treatment.
Q1: How accurate is this conversion?
A: This is an approximate relationship with typical accuracy within ±10% for most steels. Actual conversion factors vary by material type.
Q2: What materials is this formula valid for?
A: Primarily for medium-carbon and low-alloy steels. Not accurate for very hard materials (>60 HRC) or non-ferrous alloys.
Q3: Why use hardness to estimate tensile strength?
A: Hardness tests are simpler, faster, and non-destructive compared to tensile tests, making them practical for quality control.
Q4: Are there more precise conversion methods?
A: Yes, material-specific conversion tables or more complex formulas exist, but this provides a quick estimation.
Q5: What's the typical HRC range for this formula?
A: Most accurate between 20-60 HRC. Outside this range, the linear relationship may not hold.