Precision Ground Flat Stock
420 (RUETOM SPECIAL)
Stainless Steel
Precision Marshall’s Ruetom 420 is a hardenable, 12% chromium (minimum) martensitic stainless steel with
good corrosion resistance along with high strength and hardness. Meets ASTM A276-17.
Chemistry
| ELEMENT | RANGE |
|---|---|
| Carbon | .40 |
| Manganese | .40 |
| Chromium | 13.00 |
| Silicon | .40 |
Additional Information
Applications
Ruetom 420 applications include cutlery, shear blades, valves, surgical equipment.Annealing
Heat slowly and uniformly to 1600°F for 6 hours and cool slowly in furnace.Heat Treating
Ruetom 420 can be heat treated by oil quenching from 1800°F to 1900°F.Tempering
Tempering should be at the proper temperature to achieve the desired hardness. Tempering between 800°F
and 1100°F should be avoided due to a decrease in corrosion resistance and toughness.
| TEMPERING TEMPERATURE (°F) | ROCKWELL HARDNESS (RC) |
|---|---|
| 300 | 52 |
| 400 | 52 |
| 500 | 50 |
| 600 | 50 |
| 700 | 49 |
| 800 | 49 |
