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Grade 420S37
Corresponding Standard BS 970-1-1983
British Standard Specification for Wrough steels for mechanical and allied engineering purposes Part 1. General inspection and testing procedures and specific requirements for carbon,carbon manganese,alloy and stainless steels
Classification Martensitic Stainless Steel
Properties Corrosion Resistance
420S37 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni
Minimum Value 0.2 - - - - 12 -
Maximum Value 0.28 1 1 0.04 0.03 14 1
• For older grades of stainless steel, see Table 2 of standard BS 970-4-1970
1 Approximate Comparison Table Martensitic 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
20Cr13
(2Cr13) 		S42020 420J1 SUS 420J1 STS 420J1 420 S42000 X20Cr 13
4
(ISO 683-13-1986) 		4021-420-00-I X20Cr 13 1.4021 Z20C 13 X20Cr 13 1.4021 20Х13 2303 420S37
2 Approximate Comparison Table Martensitic Heat-Resistant Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard Russia United Kingdom
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST BS EN/BS
20Cr13
(2Cr13) 		S42020 420J1 SUS 420J1 STS 420J1 420 S42000 X20Cr 13 X20Cr 13 1.4021 420F 20
Z20C 13 		X20Cr 13 1.4021 20Х13 420S37
3 Approximate Comparison Table Martensitic Heat-Resistant Steel
China Japan United States Germany France European Standard Russia Sweden United Kingdom
GB JIS ASTM UNS DIN EN/DIN NF EN/NF EN Numerical Grade GOST SS BS EN/BS
20Cr13
2Cr13
X20Cr13 		SUS420J1 420 S42010
S42010 		X20Cr13 X20Cr13
Z20C13 		X20Cr13 1.4021 20KH13 2303 420S29
420S37
420S37 Corresponding Standards(Same grade name, different standards)
1 BS 970-3-1991
420S37
2 BS 970-1-1983
420S37
3 BS 970-4-1970
420S37 (EN56C)

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