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Grade Type 309
USA UNS S30900
Corresponding Standard ASTM A580/A580M-2018
Stainless Steel Wire
Classification Austenitic Stainless Steel
Type 309 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni
Minimum Value - - - - - 22 12
Maximum Value 0.2 1 2 0.045 0.03 24 15
Type 309 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Reduction of Area
ψ
%
A Cold Precision Rolling ≥620 ≥310 ≥30 ≥40
A Annealing ≥520 ≥210 ≥35 ≥50
Approximate Comparison Table Austenitic Heat-Resistant Steel
China Taiwan, China Japan South Korea United States Germany France European Standard Russia United Kingdom
GB ISC CNS JIS KS ASTM UNS DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST BS EN/BS
16Cr23Ni13
(2Cr23Ni13) 		S30920 SUH 309 SUH 309 STR 309 309 S30900 X15CrNiSi 20-12 1.4828 Z15CNS 20-12 X15CrNiSi 20-12 1.4828 20Х20Н14С2 309S24
Type309 Corresponding Standards(Same grade name, different standards)
1 ASTM A580/A580M-2018
Type 309 S30900
2 ASTM A167-1999(R2004)
Type 309 S30900

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