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Flexbar 20531 | Rockwell A Scale Hardness Test Block | HRA 83, Round
Part Number : 20531
Flexbar 20531 is a round Rockwell A scale test block with a nominal hardness of HRA 83, the top value in Flexbar's HRA 28.5 to 83 range. It is made for the A-diamond indenter at a 60 kg load and serves as a reference when verifying a Rockwell tester on the A scale.
Key features
- Nominal hardness HRA 83
- For A-diamond indenter, 60 kg load
- Round block, 2-1/2 in diameter
- Steel block given a heat-treat and cold-treat process for consistency and repeatability
- Accuracy stated to exceed ASTM E10, E92 and E384
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