Rockwell C to tensile strength in MPa (approx.)
Type a value in HRC to get it in MPa instantly.
1,279.95MPa
That's 1.96× as hard as 304 stainless steel, while spring steel is 1.14× harder.
What it means
How hard is that?
For carbon and alloy steels (ASTM E140). Conversions between scales are approximate; for other metals and for exact values, test on the scale you need.
The math
How to convert HRC to MPa
Hardness scales convert by table (ASTM E140): HRC 50 = 513 HV = 481 HB, HRC 40 = 392 HV = 371 HB. Tensile strength ≈ 3.45 × HB MPa.
Example: 40 HRC = 1,279.95 MPa.
Every unit
That hardness on every scale
Tables
HRC to MPa conversion table
| HRC | MPa |
|---|---|
| 20 HRC | 779.7 MPa |
| 25 HRC | 872.85 MPa |
| 30 HRC | 986.7 MPa |
| 35 HRC | 1,128.15 MPa |
| 40 HRC | 1,279.95 MPa |
| 45 HRC | 1,452.45 MPa |
| 50 HRC | 1,659.45 MPa |
| 55 HRC | 1,932 MPa |
MPa to HRC conversion table
| MPa | HRC |
|---|---|
| 780 MPa | 20 HRC |
| 873 MPa | 25 HRC |
| 987 MPa | 30 HRC |
| 1,130 MPa | 35.1 HRC |
| 1,280 MPa | 40 HRC |
| 1,450 MPa | 44.9 HRC |
| 1,660 MPa | 50 HRC |
| 1,930 MPa | 55 HRC |
Quick answers
Quick answers
- How many MPa is 40 HRC?
- 40 HRC is 1,279.95 MPa.
The units
About these units
Rockwell C (HRC)
Rockwell C: depth under a diamond cone, for hardened steel (20–68).
Tensile strength in MPa (approx.) (MPa)
Estimated ultimate tensile strength of steel, in MPa.
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