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R-81 — Hrb
- Scale
- Hrb
- Hardness Value
- 81
- Approximate Tensile Ksi (ksi)
- 79
- Approximate Tensile Mpa (MPa)
- 545
- Hb (dimensionless)
- 153
- Hrb (dimensionless)
- 81
- HV (dimensionless)
- 155
- Material Class
- Steel