AISI 420 - EN 1.4021

AISI 420 - EN 1.4021 is a martensitic machining bar with improved machinability due to the addition of Sulphur. This alteration enhances workability of the steel, but causes a decrease in corrosion resistance, weldability, and formability when compared to non-free machining Grade 410.

Standard: ASTM, AISI, DIN, EN, GB, JIS

Technique: Hot Rolled/Cold Rolled/Galvnized

Processing Service: Welding, Punching, Cutting

Available Size Range: Click here

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ASTM 420 stainless steel is a high-carbon steel with a minimum chromium content of 12%. Like any other stainless steel, 1.4021 can also be hardened through heat treatment. It offers good ductility in its annealed state and excellent corrosion resistance properties when the metal is polished, surface grounded or hardened. This grade has the highest hardness - 50HRC - among all the stainless steel grades with 12% chromium.

Equivalent grades	• AISI/ASTM 420 • DIN 1.4021 • UNS S42000 • X20Cr13
Chemical Composition Reference	0.2C-13Cr
Physical Property Reference	• Density: 7.75 g/cm³ • Thermal Expansion: 10.3 x10^-6/K • Modulus of Elasticity: 200 GPa • Thermal Conductivity: 24.9 W/m.K • Electrical Resistivity: 0.55 x10^-6 Ω .m
Stock & Dimensions	Our warehouse has a large number of stock to provide you with a variety of products in different sizes, and can also customize the size according to your needs. • Bar: 0.5~600mm Diameter • Coil: 0.5~150mm Thick • Plate: 0.5~200mm Thick • Pipe: 6~630mm External Diameter; 0.5~40mm Wall Tick • Available in specific sizes
Product Forms	We provide you with a variety of product forms, including but not limited to: Bar/Rod, Pipe/Tube, Coil/Strip, Plate/Sheet/Circle, Wire, Fitting (Flange, Elbow, Tee...), Customize

Typical Applications:

- Shear blades

- Needle valves

- Surgical equipment

- Cutlery

AISI 420 - EN 1.4021

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