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S31640
AISI
American Iron and Steel Institute		 316Cb
Corresponding Standard ASME SA-240/SA-240M-2023
Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications
Classification Austenitic Stainless Steel
Properties Corrosion Resistance
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo N More
Minimum Value - - - - - 16 10 2 - Cb: 10C~1.1
Maximum Value 0.08 0.75 2 0.045 0.03 18 14 3 0.1
Mechanical Properties
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW
≥515 ≥205 ≥30 ≤217
Approximate Comparison Table Austenitic Stainless Steel
China United States International Organization for Standardization European Standard
ISC ASTM UNS ISO Numerical Grade EN Numerical Grade
S31678 316Nb
(316Cb) 		S31640 X6CrNiMoNb17-12-2 4580-316-40-I X6CrNiMoNb17-12-2 1.4580

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