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HRB Conversion Formula:
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The BHN to HRB conversion provides an approximate relationship between Brinell Hardness Number (BHN/HB) and Rockwell B Scale (HRB) hardness values. This conversion is useful when comparing material hardness across different testing methods.
The calculator uses the conversion formula:
Where:
Explanation: This formula provides an approximate conversion between the two hardness scales, accounting for the different testing methodologies and indenter types used in each test.
Details: Converting between hardness scales is essential for material specification, quality control, and when comparing hardness data from different testing methods or historical records.
Tips: Enter the Brinell Hardness Number (HB) in the input field. The value must be greater than 0. The calculator will provide the approximate Rockwell B hardness equivalent.
Q1: Why convert between BHN and HRB?
A: Different industries and applications may use different hardness scales. Conversion allows for comparison and specification consistency across various testing methods.
Q2: How accurate is this conversion?
A: This is an approximate conversion. Actual values may vary depending on material composition, heat treatment, and other factors. For critical applications, direct measurement is recommended.
Q3: What are the typical ranges for BHN and HRB?
A: BHN typically ranges from 50-700 for metals, while HRB ranges from 0-100. The conversion is most accurate for materials where both scales overlap.
Q4: When should I use this conversion?
A: Use for general reference, material selection, and when comparing hardness data from different sources. Not recommended for precise engineering specifications.
Q5: Are there limitations to this conversion?
A: Yes, conversions between hardness scales are material-dependent and may not be accurate for all alloys or heat treatment conditions. Always verify with actual testing when precision is required.