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Grade 430S15
Old Grade
Corresponding Standard BS 970-4-1970
Specification for Wrought steels in the form of blooms,billets,bars and forgings--Part 4:Valve steels
Classification Ferritic Stainless Steel
430S15 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu ◎ Mo ◎
Minimum Value - - - - - 16 - - -
Maximum Value 0.1 0.8 1 0.04 0.03 18 0.5 0.3 0.3
430S15 Mechanical Properties
condition Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Specified Plastic Yield Strength
Rp0.2
Mpa 		Yield Point
σs
Mpa 		Elongation or Extension Rate
δ
% 		Hardness
HBW
Steel Softing treatment ≥44kgf/mm2
（≥431MPa）		 ≥25kgf/mm2
（≥245MPa）		 ≥28kgf/mm2
（≥274MPa）		 ≥20 ≤170
• The letters P, R, S and T in the table indicate the range of tensile strength of quenched and tempered steels.
1 Approximate Comparison Table Ferritic Stainless Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia Sweden United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO Numerical Grade DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST SS BS EN/BS
10Cr17
(1Cr17) 		S11710 430 SUS 430 STS 430 430 S43000 X6Cr 17
8
ISO 683-13-1986 		4016-430-00-I X6Cr 17
(X8Cr 17) 		1.4016 Z8C 17 X6Cr 17 1.4016 12Х 17 2320 430S15
2 Approximate Comparison Table Heat-Resistant Stainless Steel
Germany France European Standard United Kingdom
DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade BS EN/BS
X10CrAl 18
X10CrAlSi 18 		1.4742
1.4742 		Z10CAS 18 X10CrAlSi 18 1.4742 430S15
430S15 Corresponding Standards(Same grade name, different standards)
1 BS
430S15
2 BS 970-4-1970
430S15 (EN60)
3 BS 3111-2-1979
430S15

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