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Grade XM-12
USA UNS S15500
Corresponding Standard ASTM A959-2004
Standard Guide for Specifying Harmonized Standard Grade Compositions for Wrought Stainless Steels
Classification Precipitation-Hardening Stainless Steel
Properties Corrosion Resistance
XM-12 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Nb
Minimum Value - - - - - 14 3.5 2.5 0.15
Maximum Value 0.07 1 1 0.04 0.03 15.5 5.5 4.5 0.45
1 Approximate Comparison Table Precipitation Hardening Stainless Steel
China United States Germany European Standard
GB ASTM UNS SAE W-Nr. EN
0Cr15Ni5Cu4Nb S15500 XM12 15-5PH 1.4545 X5CrNiCuNb15-5
2 Approximate Comparison Table Precipitation Hardening Stainless Steel
China United States
GB ISC ASTM UNS
05Cr15Ni5Cu4Nb
(0Cr15Ni5Cu4Nb)
GB/T 20878-2024 		S51550 XM-12
ASTM A959 		S15500
XM-12 Corresponding Standards(Same grade name, different standards)
1 ASTM A959-2004
XM-12 S15500
2 ASTM A564/A564M-2019(a)
XM-12 S15500
3 ASTM A693-2013
XM-12 S15500
4 ASTM A959-2019
XM-12 S15500
5 ASTM A705/A705M-2023
XM-12 S15500

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