HIGH SPEED STEEL M42
Chemical Composition
Elements | Min | Max |
|---|---|---|
| Carbon, C | 0.70 | 0.85 |
| Manganese, Mn | 0.00 | 0.40 |
| Silicon, Si | 0.00 | 0.40 |
| Molybdenum, Mo | 0.00 | 0.00 |
| Chromium,Cr | 4.50 | 5.50 |
| W | 17.00 | 19.00 |
| V | 0.80 | 1.20 |
| Co | 4.50 | 5.50 |
Physical Properties
Properties | Metric | Imperial |
|---|---|---|
| Density | 7.81 g/cm3 | 0.282 lb/in3 |
Mechanical Properties
Properties | Metric | Imperial |
|---|---|---|
| Hardness, Rockwell C (oil quenched from 1204°C, 5 minutes) | 64.3 | 64.3 |
| Hardness, Rockwell C (oil quenched from 1177°C, 5 minutes) | 65.5 | 65.5 |
| Hardness, Rockwell C(oil quenched from 1163°C) | 65.8 | 65.8 |
| Izod impact unnotched (oil quenched at 1191°C; 510°C temper temperature) | 13.6 J | 10.0 ft- lb |
| Izod impact unnotched (oil quenched at 1191°C; 622°C temper temperature) | 24.4 J | 25.8 |
| Machinability (1% carbon steel) | 35.0 - 40.0% | 35.0 - 40.0% |
| Poisson's ratio | 0.27-0.30 | 0.27-0.30 |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
Features
Heat Treatment
Tempering
Annealing
Machinability
Hardening
Stress Relieving
Quenching
