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Grade SUH37
Corresponding Standard JIS G 4311-1991
Heat-resisting steel bars and wire rods
Classification Austenitic Stainless Steel
SUH37 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni N
Minimum Value 0.15 - 1 - - 20.5 10 0.15
Maximum Value 0.25 1 1.6 0.04 0.03 22.5 12 0.3
1 Approximate Comparison Table Austenitic Heat-Resistant Steel
China Taiwan, China Japan South Korea United States United Kingdom
GB ISC CNS JIS KS UNS BS EN/BS
22Cr21Ni12N
(2Cr21Ni12N) 		S30850 SUH 37 SUH 37 STR 37 S63017 381S34
2 Approximate Comparison Table Valve Steel
China Taiwan, China Japan South Korea United States France United Kingdom
GB ISC CNS JIS KS Commercial Grade UNS SAE NF EN/NF BS EN/BS
2Cr21Ni12N S30750 37 SUH 37 STR 37 21-12 S63017 EV4 Z20CN 21-21Az 381S34
3 Approximate Comparison Table Austenitic Stainless Steel
China Japan International Organization for Standardization European Standard
ISC JIS ISO Numerical Grade Numerical Grade
S30850 SUH37 X20CrNiN22-11 4824-308-09-J 1.4824
4 Approximate Comparison Table Austenitic Heat-Resistant Steel
China Japan United States
GB JIS SAE
20Cr21Ni12N SUH37 EV4
SUH37 Corresponding Standards(Same grade name, different standards)
1 JIS G 4311-1991
SUH37
2 JIS G 4311-2019
SUH37

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