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Grade XM-16
USA UNS S45500
Corresponding Standard ASTM A313/A313M-2018
Stainless Steel Spring Wire
Classification Precipitation-Hardening Stainless Steel
Properties High Elasticity Corrosion Resistance
XM-16 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu Mo Ti Nb
Minimum Value - - - - - 11 7.5 1.5 - 0.8 0.1
Maximum Value 0.05 0.5 0.5 0.04 0.03 12.5 9.5 2.5 0.5 1.4 0.5
XM-16 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa
0.25≤d≤1.02 Precipitation Hardening 2205~2415
1.02＜d≤1.27 Precipitation Hardening 2135~2345
1.27＜d≤1.52 Precipitation Hardening 2100~2310
1.52＜d≤1.9 Precipitation Hardening 2035~2240
1.9＜d≤2.16 Precipitation Hardening 2000~2205
2.16＜d≤2.41 Precipitation Hardening 1965~2170
2.41＜d≤2.79 Precipitation Hardening 1915~2125
2.79＜d≤3.17 Precipitation Hardening 1875~2080
3.17＜d≤3.81 Precipitation Hardening 1825~2035
3.81＜d≤12.7 Precipitation Hardening 1795~2000
0.25≤d≤1.02 Cold Drawing 1690
1.27＜d≤1.52 Cold Drawing 1620
1.27＜d≤1.52 Cold Drawing 1550
1.52＜d≤1.9 Cold Drawing 1515
1.9＜d≤2.16 Cold Drawing 1480
2.16＜d≤2.41 Cold Drawing 1450
2.41＜d≤2.79 Cold Drawing 1380
2.79＜d≤3.17 Cold Drawing 1345
3.17＜d≤3.81 Cold Drawing 1310
3.81＜d≤12.7 Cold Drawing 1240
Approximate Comparison Table Precipitation Hardening Heat-Resistant Steel
China United States
GB ISC ASTM UNS
022Cr12Ni9Cu2NbTi
GB/T 20878-2024 		S51290 XM-16
ASTM A959 		S45500
XM-16 Corresponding Standards(Same grade name, different standards)
1 ASTM A959-2004
XM-16 S45500
2 ASTM A564/A564M-2019(a)
XM-16 S45500
3 ASTM A313/A313M-2018
XM-16 S45500
4 ASTM A693-2013
XM-16 S45500
5 ASTM F899-2020
XM-16 S45500
6 ASTM A959-2019
XM-16 S45500
7 ASTM A705/A705M-2023
XM-16 S45500

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