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BHN Conversion Formula:
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The HRC to BHN conversion provides an approximate relationship between Rockwell C hardness and Brinell hardness number. This conversion is useful for material selection, quality control, and comparing hardness measurements across different testing scales in metallurgical applications.
The calculator uses the conversion formula:
Where:
Explanation: This empirical formula provides an approximate conversion between the two hardness scales, with the specific coefficients derived from experimental data and material testing correlations.
Details: Accurate hardness conversion is essential for material specification, quality assurance, and when comparing hardness data from different testing methods or when only one type of hardness measurement is available.
Tips: Enter Rockwell C hardness value between 0-70 HRC. The calculator will provide the approximate Brinell hardness number. Note that this is an empirical conversion and may vary slightly for different materials.
Q1: How accurate is this conversion?
A: This is an approximate conversion that works well for most steels. Actual conversion may vary depending on material composition and heat treatment.
Q2: What is the typical range for HRC values?
A: Rockwell C hardness typically ranges from 20-70 HRC for most hardened steels, with values below 20 HRC usually measured on the Rockwell B scale.
Q3: When would I need to convert HRC to BHN?
A: Conversion is needed when specifications require BHN values but only HRC measurements are available, or when comparing data from different testing methods.
Q4: Are there limitations to this conversion?
A: Yes, the relationship is empirical and may not be precise for all materials. For critical applications, direct BHN testing is recommended.
Q5: What materials is this conversion valid for?
A: Primarily valid for carbon and alloy steels. Different conversion factors may apply for non-ferrous metals or specialized alloys.