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USA UNS S30451
AISI
American Iron and Steel Institute		 304N
Corresponding Standard ASTM A666/A666M-2024
Standard Specification for Annealed or Cold-Worked Austenitic Stainless Steel Sheet, Strip, Plate, and Flat Bar
Classification Austenitic Stainless Steel
Properties Corrosion Resistance
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni N
Minimum Value - - - - - 18 8 0.1
Maximum Value 0.08 0.75 2 0.045 0.03 20 10.5 0.16
Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW
Annealing ≥550 ≥240 ≥30 ≤217
1/16 Hard ≥620 ≥310 ≥40
1/8 Hard ≥690 ≥380 ≥37
1/4 Hard ≥860 ≥515 ≥12
1/2 Hard ≥1035 ≥760 ≥6 (thickness＜0.38mm);
≥8 (thickness≥0.38mm)
1 Approximate Comparison Table Austenitic Stainless Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization European Standard
GB ISC CNS JIS KS ASTM UNS ISO Numerical Grade EN Numerical Grade
06Cr19Ni10N
(0Cr19Ni9N) 		S30458 304N1 SUS 304N1
SUS 304N2 		STS 304N1 304N S30451 X5CrNiN 19-9 4315-304-51-I X5CrNiN 19-9 1.4315
2 Approximate Comparison Table Austenitic Stainless Steel
China Japan United States Germany France European Standard Russia Sweden United Kingdom
GB JIS ASTM DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS
0Cr18Ni9 SUS304 304
304N 		X5CrNi18-10
X5CrNi18-9 		1.4301 X5CrNi18-10
Z5CN18-09
Z6CN18-09
Z7CN18-09 		X5CrNi18-10 1.4301 08KH18N10 2333
2333-02 		304S15
304S31

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