HRC to HRA Conversion Formula:
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The HRC to HRA conversion converts Rockwell C hardness values to Rockwell A hardness values using empirical tables for steels. This conversion is useful when comparing hardness measurements between different Rockwell scales.
The calculator uses the approximate conversion formula:
Where:
Explanation: This empirical formula provides an approximate conversion between HRC and HRA scales for steel materials, based on established hardness conversion tables.
Details: Accurate hardness conversion is crucial for material selection, quality control, and comparing hardness measurements across different testing scales in metallurgical applications.
Tips: Enter Rockwell C hardness value (HRC) between 0-70. The calculator will provide the approximate Rockwell A hardness value (HRA).
Q1: Why convert between HRC and HRA scales?
A: Different industries and applications may use different Rockwell scales, and conversion allows for comparison and standardization of hardness measurements.
Q2: How accurate is this conversion?
A: This provides an approximate conversion. For precise applications, refer to official hardness conversion tables from standards organizations.
Q3: What materials is this conversion valid for?
A: Primarily valid for steels. Different materials may have different conversion relationships between hardness scales.
Q4: What are typical HRC values for common steels?
A: Tool steels typically range from 55-65 HRC, while structural steels are usually below 40 HRC.
Q5: When should I use exact conversion tables instead?
A: For critical applications, quality control, or when precise measurements are required, always refer to standardized conversion tables.