Grade 633
USA UNS S35000
Corresponding Standard ASTM A959-2019
Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
Classification Precipitation-Hardening Stainless Steel
633 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Mo N
Minimum Value 0.07 - 0.5 - - 16 4 2.5 0.07
Maximum Value 0.11 0.5 1.25 0.04 0.03 17 5 3.2 0.13
• Unless otherwise indicated, a grade designation originally assigned by the American Iron and Steel Institute (AISI).
Approximate Comparison Table Precipitation Hardening Stainless Steel
China United States International Organization for Standardization European Standard
GB ISC ASTM UNS ISO Numerical Grade Numerical Grade
09Cr17Ni5Mo3N
GB/T 20878-2024
S51750 633
ASTM A959
S35000 X9CrNiMoN17-5-3 4457-350-00-X (1.4457)
633 Corresponding Standards(Same grade name, different standards)

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