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Stainless steel 1.4034 (also known as AISI 420C) is a martensitic stainless steel with a high chromium content, typically between 12–14%. This steel offers high hardness, strength, and wear resistance after heat treatment, making it a popular material for tools and components subjected to heavy mechanical loads. Its corrosion resistance is higher than that of standard carbon steels but lower than that of austenitic stainless steels.
The production of this steel involves melting and alloying, where chromium is added to enhance corrosion resistance. After casting, the steel undergoes heat treatment, including hardening and tempering, to increase its hardness and strength. Steel 1.4034 is easy to machine but has limited weldability, requiring specialised welding procedures.
Stainless steel 1.4034 is used in the production of highly stressed machine components, knife blades, surgical instruments, shafts, and valves. Its ability to maintain high hardness and wear resistance makes it ideal for applications in environments that require a combination of mechanical strength and resistance to corrosive influences.
