Home
Back
HRB to HRC Conversion Formula:
| From: | To: |
The HRB to HRC conversion provides an approximate relationship between Rockwell B and Rockwell C hardness scales. This conversion is useful for materials that fall in the overlapping range between the two scales and for quick estimations in material selection and quality control.
The calculator uses the simplified conversion formula:
Where:
Explanation: This formula provides an approximate conversion between the two hardness scales. For precise conversions, consult official conversion charts as the relationship may vary depending on material type and specific testing conditions.
Details: Understanding the relationship between different hardness scales is crucial for material specification, quality control, and ensuring proper material selection for engineering applications. Different industries may prefer one scale over another based on material type and testing requirements.
Tips: Enter the Rockwell B hardness value in the input field. The calculator will provide the approximate equivalent Rockwell C hardness. This conversion is most accurate for materials in the medium hardness range where the two scales overlap.
Q1: How accurate is this conversion?
A: This is an approximate conversion. For precise engineering applications, consult official ASTM conversion charts or perform actual hardness testing on the appropriate scale.
Q2: What is the typical range for HRB to HRC conversion?
A: The conversion is most applicable when HRB values range from approximately 70 to 100, corresponding to HRC values from about 40 to 70.
Q3: Why are there different Rockwell scales?
A: Different Rockwell scales (A, B, C, etc.) use different indenters and loads to measure hardness across various material types and hardness ranges.
Q4: When should I use HRB vs HRC testing?
A: HRB is typically used for softer materials like aluminum alloys and mild steels, while HRC is used for harder materials like heat-treated steels and tool steels.
Q5: Are there limitations to this conversion?
A: Yes, the relationship between scales is not perfectly linear and can vary based on material composition, heat treatment, and other factors. Always verify with actual testing when precision is required.