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Grade 632
USA UNS S15700
Corresponding Standard ASTM A959-2019
Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
Classification Precipitation-Hardening Stainless Steel
632 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo Al
Minimum Value - - - - - 14 6.5 2 0.75
Maximum Value 0.09 1 1 0.04 0.03 16 7.7 3 1.5
• Unless otherwise indicated, a grade designation originally assigned by the American Iron and Steel Institute (AISI).
Approximate Comparison Table Precipitation Hardening Stainless Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France European Standard
GB ISC CNS JIS KS ASTM UNS ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade
07Cr15Ni7Mo2Al
(0Cr15Ni7Mo2Al) 		S51570 632 SUS 632 STS 632 632 S15700 X8CrNiMoAl 15-7-2 X8CrNiMoAl 15-7-2 1.4532 Z8CNDA 17-07 X8CrNiMoAl 15-7-2 1.4532
632 Corresponding Standards(Same grade name, different standards)
1 ASTM A959-2004
632 S15700
2 ASTM A564/A564M-2019(a)
632 S15700
3 ASTM A693-2013
632 S15700
4 ASTM A959-2019
632 S15700
5 ASTM A705/A705M-2023
632 S15700

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