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AISI 420 – Martensitic Stainless Steel

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AISI 420 is a martensitic stainless steel that offers a high hardenability and strength. It also offers an excellent corrosion resistance to acidic and alkaline substances.

Alias

AISI 420
SAE 51420

Chemistry

Base Element Fe (Iron)

Element Min Max
C (Carbon)
Cr (Chromium) 0.15%
Mn (Manganese) 12% 14%
Mo (Molybdenum) 0.3% 0.6%
Ni (Nickel) 0.5%
P (Phosphorus) 0.04%
S (Sulphur) 0.03%
Si (Silcon) 1%
Mechanical Properties Min Max
Ultimate Tensile Strength (UTS) 1590 MPa
0.2% Proof Stress 1340 MPa
Elongation 8%
Gauge length A50mm
Hardness (Brinell) 500 HB

Applications

Common applications include but are not limited to, cutlery, plastic molds and dies, hand tools, dental and surgical instruments etc.

Disclaimer:
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