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USA UNS S40300
AISI
American Iron and Steel Institute		 403
Corresponding Standard ASTM A240/A240M-2020
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet and Strip for Pressure Vessels and General Applications
Classification Martensitic Stainless Steel
Properties Corrosion Resistance
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni
Minimum Value - - - - - 11.5 -
Maximum Value 0.15 0.5 1 0.04 0.03 13 0.6
Mechanical Properties
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW
≥485 ≥205 ≥25 ≤217
Approximate Comparison Table Martensitic Stainless Steel
China Taiwan, China Japan South Korea United States Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM UNS GOST SS BS EN/BS
12Cr12
(1Cr12) 		S40310 403 SUS 403 STS 403 403 S40300 08Х13 2301 403S17

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