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USA UNS S30215
ASTM
Specification or Grade		 302B
Corresponding Standard ASTM A276/A276M-2017
Standard Specification for Stainless Steel Bars and Shapes
Classification Austenitic Stainless Steel
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni N
Minimum Value - 2 - - - 17 8 -
Maximum Value 0.15 3 2 0.045 0.03 19 10 0.1
Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Reduction of Area
ψ
%
all Annealing - Hot Finish Rolling (A) ≥515 ≥205 ≥40 ≥50
≤12.7 Annealing - Cold Precision Rolling (A) ≥620 ≥310 ≥30 ≥40
＞12.7 Annealing - Cold Precision Rolling (A) ≥515 ≥205 ≥30 ≥40
Approximate Comparison Table
China Japan United States International Organization for Standardization European Standard
GB ISC JIS UNS ISO Numerical Grade Numerical Grade
12Cr18Ni9Si3
(1Cr18Ni9Si3) 		S30240 SUS302B S30215 X12CrNiSi18-9-3 4326-302-15-I (1.4326)

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