420 CNC Machining
Custom 420 CNC machined parts for prototypes and production, with fast turnaround from RapidDirect.
Explore 420 CNC Machining
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Start Creating →420 is a martensitic stainless steel with high strength and hardness. It is commonly used for cutlery and surgical instruments, and heat treatment can further increase its mechanical properties.
420 is a martensitic stainless steel with high strength and hardness. It is commonly used for cutlery and surgical instruments, and heat treatment can further increase its mechanical properties.
Selection note: 420 combines high strength and hardness with moderate corrosion resistance, making it useful for hard-wearing parts and instruments.
Compare other Stainless Steel grades →
Custom 420 CNC machined parts for prototypes and production, with fast turnaround from RapidDirect.
Explore 420 CNC Machining →| Tensile strength, yield | 345–650 MPa |
|---|---|
| Fatigue strength | 275 MPa |
| Elongation at break | 10–25 % |
| Hardness | 180–290 Brinell |
| Density | 7.80 g/cm³ |
|---|






Explore 420 properties, applications, and manufacturing options.
420 is a martensitic stainless steel with high strength and hardness. It is commonly used for cutlery and surgical instruments, and heat treatment can further increase its mechanical properties.
RapidDirect lists yield strength of 345–650 MPa, fatigue strength of 275 MPa, elongation of 10–25%, Brinell hardness of 180–290, and density of 7.80 g/cm³.
420 stainless steel is used for cutlery, surgical instruments, and hard-wearing components.
Yes. RapidDirect CNC machines custom stainless steel prototypes and production parts in this grade.