HB To HRC Conversion Calculator

Approximate Conversion Formula:

\[ HRC \approx 0.102 \times HB + 1.24 \]

(approximate for certain ranges)

Rockwell C Hardness (HRC):

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1. What is HB to HRC Conversion?

The HB to HRC conversion provides an approximate relationship between Brinell hardness (HB) and Rockwell C hardness (HRC) scales. This is useful when comparing materials or when only one hardness measurement is available.

2. How Does the Calculator Work?

The calculator uses the approximate conversion formula:

\[ HRC \approx 0.102 \times HB + 1.24 \]

Where:

\( HB \) — Brinell hardness number (dimensionless)
\( HRC \) — Rockwell C hardness number (dimensionless)

Note: This conversion is approximate and works best for certain ranges of hardness. For precise conversions, consult standard conversion tables or perform actual hardness testing.

3. Importance of Hardness Conversion

Details: Hardness conversion is important in materials science and engineering when comparing material properties or when different hardness scales are used in specifications.

4. Using the Calculator

Tips: Enter the Brinell hardness (HB) value. The calculator will provide the approximate Rockwell C hardness (HRC). The input must be a positive number.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this conversion?
A: This is an approximate conversion that works reasonably well for certain ranges. For critical applications, consult standard conversion tables or perform actual hardness testing.

Q2: What are the limitations of this conversion?
A: The relationship between HB and HRC is not perfectly linear and varies for different materials. This formula provides a general approximation.

Q3: What is the typical range for this conversion?
A: This formula works best for HB values between approximately 200 and 650, corresponding to HRC values between about 20 and 65.

Q4: Why are there different hardness scales?
A: Different hardness tests (Brinell, Rockwell, Vickers, etc.) were developed for different materials and applications, each with its own advantages and limitations.

Q5: Can I use this for all materials?
A: The conversion may vary slightly for different materials (steels vs. non-ferrous metals). For precise work, material-specific conversion tables should be used.