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Grade 331S40
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 Austenitic Stainless Steel
331S40 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni W
Minimum Value 0.35 1 0.5 - - 12 12 2
Maximum Value 0.5 2 1 0.04 0.03 15 15 3
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
X45CrNiW 18-9 1.4873 Z35CNW 14-14 X45CrNiW 18-9 1.4873 331S40

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