Type 420 is a hardenable, straight-chromium stainless steel which combines superior wear resistance of high carbon alloys with the excellent corrosion resistance of chromium stainless steels. Oil quenching these alloys from temperatures between 1800°F to 1950°F (982-1066°C) produces the highest strength and/or wear resistance as well as corrosion resistance. A range of hardness values can be achieved by varying the tempering temperature after quenching.
This alloys is used where strength, hardness, and/or wear resistance must be combined with corrosion resistance. When sufficient amounts of carbon are added to straight chromium stainless steels, the alloy then has the capability to transform its microstructure through proper heat treatment (hardening) into one that will possess optimum strength, hardness, edge retention, and wear resistance. The presence of sufficient chromium will impart the necessary corrosion resistance and form chromium carbide particles that enhance the wear resistance of the given alloy. The higher the carbon content, the greater the amount of chromium carbide particles, and the greater the strength and hardness for heat treatable straight-chromium stainless steels. Type 420 can achieve higher hardness than 410 stainless steel due to the higher carbon content.
Available Products
Stainless Type 420 Chemical Composition
Chemical Composition (wt%) limits as specified in ASTM A276 and ASME SA276*
| Carbon | 0.15 | Silicon | 1.00 |
| Chromium | 12.0-14.0 | Phosphorus | 0.40 |
| Manganese | 1.00 | Sulfur | 0.030 min |
*Maximum, unless range is indicated
Stainless Type 420 Physical Properties
| Density, lb/in3 | 0.276 |
| Modulus of Elasticity, psi | 29 x 106 |
| Coefficient of Thermal Expansion, 68-212˚F, /˚F | 6.5 x 10-6 |
| Thermal Conductivity, Btu/ft hr ˚F | 14.4 |
| Specific Heat, Btu/lb ˚F | 0.11 |
| Electrical Resistivity, Microhm-in | 22.4 |
Stainless Type 420 Mechanical Properties
Mechanical property requirements for annealed, hot finished product as specified in ASTM A276 and ASME SA276.
| Brinell Hardness, max. | 241 max |
Stainless Type 420 Standards
Typical standards for Type 420
| ASTM A276 |
| ASME SA276 |
Your Source for Stainless Type 420
At Double Eagle Alloys, we supply Stainless Type 420 in long bar engineered for these demanding services. Contact our team to learn how Stainless Type 420 can support long-term performance and reliability.
Questions? We’d love to help. Contact us today to discuss your needs or to check current availability.
Contact Us
Data shown are typical and provided for informational purposes only. Values should not be considered minimums or maximums for specification or final design. Actual product data may vary, and information may be revised without notice.