- Materials
-
Industries
Industries
Our technical strengths, distinct products, and extraordinary process capabilities as a steel supplier provide you with value-added solutions that create breakthrough results.
- Services
- Find a Sales Rep
- Pay Online
- ONLINE ORDERING
Space
Industrial
Naval
Commercial Aero
Power Generation
Defense
Medical420 is a hardenable, martensitic stainless steel that is a modification of Alloy 410. Similar to 410, it contains a minimum of 12% chromium, just sufficient enough to give corrosion resistant properties. This material has typically been used for parts requiring corrosion resistance and oxidation resistance up to 800 F (427 C) and hardness at room temperature within the range 40 to 55 HRC when heat treated. Maximum corrosion resistance is attained only in the fully hardened condition. It is never used in the annealed condition. Certain design and processing procedures may cause this material to become susceptible to stress-corrosion cracking. Grade 420 is often used for Cutlery, Surgical & Dental Instruments, Scissors, Fasteners and Firearms. (UNS S42000)
Chemical Makeup
| Element | Min | Max |
|---|---|---|
| Carbon, C | 0.3 | 0.4 |
| Manganese, Mn | - | 1 |
| Silicon, Si | - | 1 |
| Sulfur, S | - | 0.03 |
| Phosphorus, P | – | 0.04 |
| Chromium, Cr | 12 | 14 |
| Copper, Cu | - | 0.5 |
| Molybdenum, Mo | - | 0.5 |
| Aluminum, Al | - | 0.05 |
| Tin, Sn | - | 0.05 |
Common Applications
-
Aerospace
-
Medical
Benefits
- High Strength
- High Hardness
- Corrosion Resistance
- Oxidation Resistance