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Grade 349S52
Corresponding Standard BS 970-4-1970
Specification for Wrought steels in the form of blooms,billets,bars and forgings--Part 4:Valve steels
Classification Precipitation-Hardening Stainless Steel
349S52 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu ◎ Mo ◎ N More
Minimum Value 0.48 - 8 - - 20 3.25 - - 0.38 C+N≥0.9*
Maximum Value 0.58 0.25 10 0.04 0.035 22 4.5 0.3 0.3 0.5
1 Approximate Comparison Table Austenitic 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 UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST BS EN/BS
53Cr21Mn9Ni4N
(5Cr21Mn9Ni4N) 		S35650 SUH 35 SUH 35 STR 35 S63008 X53CrMnNiN 21-9 X53CrMnNiN 21-9 1.4871 Z52CMN 21-09 X53CrMnNiN 21-9 1.4871 55Х20Г9AН4 349S52
2 Approximate Comparison Table Valve 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 Commercial Grade UNS SAE ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST BS EN/BS
53Cr21Mn9Ni4N
(5Cr21Mn9Ni4N) 		S35650 35 SUH 35 STR 35 21-4N S63008 EV8 X53CrMnNiN 21-9 ~ X53CrMnNiN 21-9 1.4871 Z53CMN 21-09Az X53CrMnNiN 21-9 1.4871 55Х20Г9АН4 349S52

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