1. What Is BHN To HRC Conversion?

The BHN to HRC conversion allows translation between Brinell Hardness Number and Rockwell C hardness scales. This is useful when comparing material specifications or when only one hardness measurement method is available.

2. How Does The Calculator Work?

The calculator uses the approximate conversion formula:

Where:

• \( HRC \) — Rockwell C Hardness (unitless)
• \( BHN \) — Brinell Hardness Number (unitless)
• \( 0.07 \) — Conversion coefficient
• \( -2.5 \) — Conversion offset

Explanation: This formula provides an approximate conversion between the two hardness scales. For precise conversions, refer to standardized conversion tables.

3. Importance Of Hardness Conversion

Details: Accurate hardness conversion is essential for material selection, quality control, and ensuring mechanical components meet design specifications across different measurement systems.

4. Using The Calculator

Tips: Enter the Brinell Hardness Number (BHN) value. The value must be positive and valid. The calculator will provide the approximate Rockwell C Hardness (HRC) equivalent.

5. Frequently Asked Questions (FAQ)

Q1: Why Use Approximate Conversion Instead Of Tables?
A: The formula provides quick estimation, while conversion tables offer more precise values for specific materials and hardness ranges.

Q2: What Are Typical BHN And HRC Ranges?
A: BHN typically ranges from 100-700 for most steels, while HRC ranges from 20-70 for hardened steels.

Q3: When Is This Conversion Most Accurate?
A: The conversion is most accurate for medium-hardness steels and becomes less reliable at extreme hardness values.

Q4: Are There Limitations To This Conversion?
A: Yes, different materials may have slightly different conversion relationships. Always consult material-specific conversion charts for critical applications.

Q5: Should This Be Used For Quality Control?
A: For quality control purposes, use standardized conversion tables or measure directly with the required hardness scale for maximum accuracy.