Brinell to tensile strength in MPa (approx.)
Type a value in HB 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 HB 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: 371 HB = 1,279.95 MPa.
Every unit
That hardness on every scale
Tables
HB to MPa conversion table
| HB | MPa |
|---|---|
| 226 HB | 779.7 MPa |
| 253 HB | 872.85 MPa |
| 286 HB | 986.7 MPa |
| 327 HB | 1,128.15 MPa |
| 371 HB | 1,279.95 MPa |
| 421 HB | 1,452.45 MPa |
| 481 HB | 1,659.45 MPa |
| 560 HB | 1,932 MPa |
MPa to HB conversion table
| MPa | HB |
|---|---|
| 780 MPa | 226.1 HB |
| 873 MPa | 253 HB |
| 987 MPa | 286.1 HB |
| 1,130 MPa | 327.5 HB |
| 1,280 MPa | 371 HB |
| 1,450 MPa | 420.3 HB |
| 1,660 MPa | 481.2 HB |
| 1,930 MPa | 559.4 HB |
Quick answers
Quick answers
- How many MPa is 371 HB?
- 371 HB is 1,279.95 MPa.
The units
About these units
Brinell (HB)
Brinell: load over the area of a 10 mm ball dent (tungsten-carbide ball).
Tensile strength in MPa (approx.) (MPa)
Estimated ultimate tensile strength of steel, in MPa.
Keep going