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Rockwell Hardness Test Blocks HRA, HRB, HRC
Hardness testing blocks are designed for metals hardness testers calibration.
There are available different standard nominal values of the blocks, such as: 25 HRC, 45 HRC, 65 HRC, 90 HRB, 83 HRA.
Basically, the blocks are made from Carbon Steel, but also available blocks are made from Brass and Aluminium.
The blocks meet ASTM E18 standard.
- Wide range of values and loads
- Low surface hardness homogeneity
- Competitive price
| Hardness value | Load, kg | Surface homogeneity | Dimension, mm | Material |
| HRA: 83±3 | 60 | 0,6 HRA | 60х40х6 | Carbon steel |
| HRB: 90±10 | 100 | 1,2 HRB | 60х40х6 | Carbon steel |
| HRC: 65±5 | 150 | 0,5 HRC | 60х40х6 | Carbon steel |
| HRC: 45±5 | 150 | 0,8 HRC | 60х40х10 | Carbon steel |
| HRC: 25±5 | 150 | 1,1 HRC | 60х40х10 | Carbon steel |
| HRB: 20 | 100 | – | – | Brass |
| HRB: 50 | 100 | – | – | Brass |
| HRB: 20 | 100 | – | – | Aluminum |
| HRB: 70 | 100 | – | – | Aluminum |
| HRE: 58 | 100 | – | – | Aluminum |
- Rockwell Hardness Test Block 25HRC (25±5 HRC)
- Rockwell Hardness Test Block 45HRC (45±5 HRC)
- Rockwell Hardness Test Block 65HRC (65±5 HRC)
- Rockwell Hardness Test Block 83HRA (83±3 HRA)
- Rockwell Hardness Test Block 90HRB (90±10 HRB)
- Rockwell Brass Hardness Test Block 20HRB
- Rockwell Brass Hardness Test Block 50HRB
- Rockwell Aluminum Hardness Test Block 20HRB
- Rockwell Aluminum Hardness Test Block 70HRB
- Rockwell Aluminum Hardness Test Block 58HRE
The blocks with other scales and nominals are available as well.
- Calibration certificate issued by the third-party metrology laboratory (ILAC)
- Certificate of origin issued by the Chamber of Commerce and Industry
- Certificate of Origin and Quality from NOVOTEST
- Hardness test block
- Test certificate
- Package