Grade 630
USA UNS S17400
Corresponding Standard ASTM F899-2020
Wrought Stainless Steels for Surgical Instruments
Classification Precipitation-Hardening Stainless Steel
630 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu More
Minimum Value - - - - - 15 3 3 Nb+Ta:0.15~0.45
Maximum Value 0.07 1 1 0.04 0.03 17.5 5 5
1 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 Numerical Grade DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade
05Cr17Ni4Cu4Nb
(0Cr17Ni4Cu4Nb)
S51740 630 SUS 630 STS 630 630 S17400 X5CrNiCuNb 16-4
1
(ISO 683-13-1986)
4542-174-00-I X5CrNiCuNb 17-4 1.4542 Z6CNU 17-04 X5CrNiCuNb 16-4 1.4542
2 Approximate Comparison Table Precipitation Hardening Heat-Resistant 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
05Cr17Ni4Cu4Nb
(0Cr17Ni4Cu4Nb)
S51740 630 SUS 630 STS 630 630 S17400 X5CrNiCuNb 16-4 X5CrNiCuNb 17-4 1.4542 Z6CNU 17-04 X5CrNiCuNb 16-4 1.4542

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