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Brinell to Rockwell C Conversion Formula:
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The Brinell to Rockwell C conversion calculator provides an approximate conversion between Brinell hardness (HB) and Rockwell C hardness (HRC) scales. This conversion is useful for material testing and quality control applications.
The calculator uses the approximation formula:
Where:
Explanation: This formula provides a rough approximation for mid-range hardness values. For precise conversions, consult official conversion tables as the relationship is not perfectly linear.
Details: Accurate hardness conversion is essential for material specification, quality control, and ensuring compliance with industry standards across different testing methods.
Tips: Enter Brinell hardness value in HB units. The calculator will provide an approximate Rockwell C hardness value. Use official conversion tables for critical applications.
Q1: How accurate is this conversion?
A: This provides an approximate conversion for mid-range values. For precise conversions, always refer to official ASTM or ISO conversion tables.
Q2: What is the range of validity for this formula?
A: This approximation works best for mid-range hardness values (approximately 200-400 HB). Accuracy decreases at extreme high or low hardness values.
Q3: Why are there different hardness scales?
A: Different scales (Brinell, Rockwell, Vickers) use different testing methods and are suited for different materials and hardness ranges.
Q4: When should I use conversion tables instead?
A: For critical applications, material certification, or when precise values are required, always use official conversion tables rather than approximations.
Q5: Can this conversion be used for all materials?
A: The relationship between hardness scales can vary slightly between different materials. Steel alloys typically follow this approximation most closely.