If you are in the trades, this is the one reference guide that actually earns its keep on the workbench.
| HBW | HRC | HV | Tensile (MPa) approx | |-----|-----|----|----------------------| | 200 | – | 210 | 690 | | 300 | 32 | 320 | 1050 | | 400 | 42 | 420 | 1400 | | 600 | 58 | 620 | 2100 |