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HRC to HRA Conversion Table:
| HRC | HRA |
|---|---|
| 20 | 60.1 |
| 25 | 58.8 |
| 30 | 57.2 |
| 35 | 55.7 |
| 40 | 53.5 |
| 45 | 51.5 |
| 50 | 49.5 |
| 55 | 47.0 |
| 60 | 44.5 |
| 65 | 41.8 |
| 70 | 39.0 |
| From: | To: |
HRC (Hardness Rockwell C) and HRA (Hardness Rockwell A) are different scales for measuring material hardness. This calculator converts between these scales using standard conversion tables for income tax and material certification purposes.
The calculator uses a standard conversion table to find the closest matching HRA value for a given HRC input:
| HRC | HRA |
|---|---|
| 20 | 60.1 |
| 25 | 58.8 |
| 30 | 57.2 |
| 35 | 55.7 |
| 40 | 53.5 |
| 45 | 51.5 |
| 50 | 49.5 |
| 55 | 47 |
| 60 | 44.5 |
| 65 | 41.8 |
| 70 | 39 |
The calculator finds the closest HRC value in the table and returns the corresponding HRA value.
Details: Accurate hardness conversion is crucial for material certification, quality control, and income tax documentation for industrial applications where different hardness scales are used.
Tips: Enter a valid HRC value between 20 and 70. The calculator will return the closest matching HRA value from the standard conversion table.
Q1: Why convert between HRC and HRA?
A: Different industries and standards may require hardness values in different scales. Conversion ensures consistency in documentation and certification.
Q2: How accurate is the conversion?
A: The conversion uses standard industry tables. For precise applications, direct measurement is recommended.
Q3: What materials use these hardness scales?
A: HRC is commonly used for harder steels, while HRA is used for materials like tungsten carbide and thin steel.
Q4: Are there limitations to conversion tables?
A: Conversion tables provide approximate values. Actual conversion may vary slightly based on material composition.
Q5: Why is this relevant for income tax?
A: Some jurisdictions require material certification with specific hardness scales for tax purposes on industrial equipment.