Hardness Calculator HBW To HRC

HBW to HRC Conversion Formula:

\[ HRC = 20 \times \log_{10}(HBW) - 95 \]

Rockwell C Hardness (HRC):

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1. What is HBW to HRC Conversion?

The HBW to HRC conversion formula converts Brinell hardness (HBW) values to Rockwell C (HRC) hardness scale. This conversion is useful in materials science and engineering when comparing hardness measurements across different testing methods.

2. How Does the Calculator Work?

The calculator uses the conversion formula:

\[ HRC = 20 \times \log_{10}(HBW) - 95 \]

Where:

\( HRC \) — Rockwell C hardness value
\( HBW \) — Brinell hardness value
\( \log_{10} \) — Base-10 logarithm function

Explanation: The formula provides an approximate conversion between Brinell and Rockwell C hardness scales using a logarithmic relationship that accounts for the different measurement principles of each test method.

3. Importance of Hardness Conversion

Details: Accurate hardness conversion is essential for material selection, quality control, and comparing test results from different hardness testing methods in manufacturing and materials engineering applications.

4. Using the Calculator

Tips: Enter the Brinell hardness value (HBW) in the input field. The value must be greater than 0. The calculator will automatically compute the equivalent Rockwell C hardness (HRC) value.

5. Frequently Asked Questions (FAQ)

Q1: Why convert between HBW and HRC?
A: Different industries and applications may use different hardness scales. Conversion allows comparison of results and ensures proper material specifications are met.

Q2: How accurate is this conversion?
A: This formula provides a general approximation. For critical applications, direct measurement using the appropriate hardness test method is recommended.

Q3: What are typical HBW and HRC ranges?
A: HBW typically ranges from 100-700 for most metals, while HRC ranges from 20-70 for hardened steels. The conversion is most accurate within common overlapping ranges.

Q4: When should I use this conversion?
A: Use for general reference, material selection guidance, and when only one hardness measurement method is available but specifications require the other scale.

Q5: Are there limitations to this conversion?
A: Conversion accuracy may vary with material type, heat treatment, and specific alloy composition. Always verify with direct measurement for critical applications.