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USA UNS S42900
ASTM
Specification or Grade		 429
Corresponding Standard ASTM A473-2018
stainless steel forgings
Classification Ferritic Stainless Steel
Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni
Minimum Value - - - - - 14 -
Maximum Value 0.12 1 1 0.04 0.03 16 0.75
Mechanical Properties
Tensile Strength
σb
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Reduction of Area
ψ
% 		Hardness
HBW
≥450 ≥240 ≥23 ≥45 ≤207
1 Approximate Comparison Table
China Japan United States International Organization for Standardization European Standard
GB ISC JIS UNS ISO Numerical Grade Numerical Grade
10Cr15
(1Cr15 ) 		S11510 SUS429 S42900 X10Cr15 4012-429-00-X (1.4012)
2 Approximate Comparison Table
China United States International Organization for Standardization European Standard
GB ISC ASTM UNS ISO Numerical Grade EN Numerical Grade
10Cr15
(1Cr15)
GB/T 20878-2024 		S11510 429
ASTM A959 		S42900 X10Cr15
ISO 15510 		4012-429-00-X X10Cr15
EN 10088-1 		1.4012

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