1.4021 - AT A GLANCE
What kind of steel is the 1.4021?
Stainless steel 1.4021 (X20Cr13) has an average corrosion resistance that can be enhanced by fine grinding or polishing the surface to a high finish.
Finely ground or polished it lends itself for cutlery, blades, kitchen articles or decorative purposes but it can also be used in moderately aggressive media, steam or freshwater.
The 1.4021 does loose ductility at sub-zero temperatures and strength when over tempering this material at elevated temperatures.
Properties
The 1.4021 is well suited for applications that require a good balance between wear resistance and moderate corrosion resistance. It can be used in mild environments and can be used to make surgical instruments or cutlery due to its durability and wear resistance. All in all, it is a very versatile stainless steel with a good variety of applications.
- Corrosion-resistant stainless steel (here quenched and tempered)
- Martensitic chromium steel
- Good mechanical properties
- Can be polished to a mirror finish
- Suitable as knife steel
- Good forgeability
- Medium weldability
- Limited acid resistance
- Magnetisable
- Cold formable (low degree of deformation)
- Not resistant to seawater
Applications
Stainless steel 1.4021 can be used for applications needing high hardness, strength and moderate corrosion resistance:
- Kitchenware
- Cutlery
- Pumps
Ebenfalls:
- Automotive industry
- Engery technology
- Turbine and power plant construction
- Medical technology
- Mechanical engineering
- Petrochemical industry
- Shafts
- Valves
- Machine components like gears, bolts and nuts
- Cutting tool industry
- Knives
- Fastners
- Architecture
- Decorations
