1. What is HRC to HB Conversion?

The HRC to HB conversion provides an approximate relationship between Rockwell C hardness and Brinell hardness scales. This conversion is useful for material selection, quality control, and comparing hardness values across different testing methods.

2. How Does the Calculator Work?

The calculator uses the conversion formula:

Where:

• \( HB \) — Brinell Hardness Number
• \( HRC \) — Rockwell C Hardness Value

Explanation: This linear approximation provides a quick conversion between the two hardness scales, though actual values may vary slightly depending on material composition and testing conditions.

3. Importance of Hardness Conversion

Details: Accurate hardness conversion is essential for material specification, quality assurance, and ensuring compatibility between different hardness testing methods used in various industries.

4. Using the Calculator

Tips: Enter Rockwell C hardness value between 0-70 HRC. The calculator will provide the approximate Brinell hardness equivalent.

5. Frequently Asked Questions (FAQ)

Q1: How accurate is this conversion?
A: This provides an approximate conversion. Actual values may vary by ±5-10% depending on material type and testing conditions.

Q2: What are typical HRC ranges for common materials?
A: Tool steels: 55-65 HRC, Hardened steels: 45-55 HRC, Medium carbon steels: 25-40 HRC.

Q3: When is this conversion most useful?
A: When comparing specifications, selecting materials, or when only one hardness testing method is available but the other is required.

Q4: Are there limitations to this conversion?
A: Yes, it's an approximation. For critical applications, actual hardness testing using the required method is recommended.

Q5: What materials is this conversion valid for?
A: Primarily for steels. Different conversion factors may apply for non-ferrous materials and alloys.