Quick Details
1: 420 steel introduction
420 stainless steel is a martensitic stainless steel that has the same corrosion resistance as 410, but also has higher strength and hardness. It also retains its magnetic properties under annealed and hardened conditions. Alloy 420 has a higher carbon content than alloy 410, has good ductility in the annealed state, and is capable of hardening to a Rockwell hardness of 50 HRC, the highest hardness of the 12% chromium grade.
2: 420 Steel equivalent
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Country
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Japan
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Germany
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USA
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China
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Standard
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JIS
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DIN(W-Nr.)
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ASTM
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GB/T
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Grade
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SUS420J1
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X20Cr13 / 1.4021
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420
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2Cr13
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3: 420 steel chemical composition
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Grade
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C≤
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Si≤
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Mn
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P≤
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S≤
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Cr
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Ni
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420
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0.15
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1.00
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1.00
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0.04
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0.03
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12.0-14.0
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/
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SUS420J1
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0.15
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1.00
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1.00
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0.04
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0.03
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12.0-14.0
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0.60
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X20Cr13 / 1.4021
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0.25
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1.00
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1.00
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0.04
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0.03
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12.0-14.0
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/
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2Cr13
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0.25
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1.00
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1.00
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0.035
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0.03
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12.0-14.0
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0.60
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4: 420 steel mechanical properties
The mechanical properties mainly include tensile strength, yield strength, elongation, area or reduction, hardness, impact value, non-metalic inclusion etc. Different heat treatment, the mechanical properties will be different, such as annealed, Solid Solution. If you want to know the properties, kindly contact the salesman.
5: 420 steel overviews
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Size
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Round
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Dia 0.1-500mm
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Plate/Flat/Block
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Thickness
0.3mm-200mm
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Width
1mm-2500mm
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Heat treatment
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Annealed ; Solid Solution
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Surface condition
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Black; Peeled; Polished; Machined;Sand blast etc
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Delivery condition
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Forged; Hot rolled; Cold drawn
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Test
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Tensile strength, Yield strength, elongation, area of reduction, impact value, hardness, grain size, ultrasonic test, US inspection, magnetic particle testing, etc.
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Payment terms
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T/T;L/C;/Money gram/ Paypal
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Trade terms
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FOB; CIF; C&F; etc..
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Delivery time
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30-45 days
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Application
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420 is widely used in aviation, power, petrochemical, ship, machinery, electronics, environmental protection and other industries.
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6: Heat Treatment
420 may be achieved by slowly increasing the temperature to 1400° F, and then heated to 2000° -2200° F for hot working. The temperature is typically maintained above 1600° F. After work, cool the furnace slowly to avoid cracking. 420 can only withstand slight cold working.
Annealing: 420 stainless steel can be heated at 840 to 900° C, then slowly cooled at 600° C, and then air cooled.
Hardening: Heat at 980-1035° C and then air or oil quench. For parts, oil quenching is generally preferred.
Tempering: 150-370℃ for high hardness and good mechanical properties. 420 shall not be tempered between 425 and 600° C.
7: Delivery condition
For hot forged bar, usually the delivery condition is hot forged, annealed/solid solution, rough turned/Black surface.
For hot rolled bar, usually the delivery condition is hot rolled, annealed/solid solution, Black surface.
For hot rolled plate, usually the delivery condition is hot rolled, annealed/solid solution, black surface.
For cold drawn bar, usually the delivery condition is cold drawn, annealed/QT, peeled/black surface
