15-7M0Ph steel alloy can withstand all kinds of cold forming and welding process under the condition of austenite.Then through heat treatment can obtain
the highest strength; Under 550 ℃ with excellent high temperature strength,was designed to have greater toughness than 17-4 PH. The alloy is martensitic in structure in the annealed condition and is further strengthened by a relatively low temperature heat treatment which precipitates a copper containing phase in the alloy.
C |
Cr |
Ni |
Mo |
Si |
Mn |
P |
S |
Al |
≤0.09 |
14.0-16.0 |
6.5-7.75 |
2.0-3.0 |
≤1.0 |
≤1.0 |
≤0.04 |
≤0.03 |
0.75-1.5 |
Density (g/cm3) |
Electrical resistivity (μΩ·m) |
7.8 |
0.8 |
Condition | бb/N/mm2 | б0.2/N/mm2 | δ5/% | ψ | HRW | |
Precipitation hardening |
510℃ ageing |
1320 |
1210 |
6 |
20 |
≥388 |
565℃ ageing |
1210 |
1100 |
7 |
25 |
≥375 |
AMS 5659, AMS 5862,ASTM-A564 ,W. Nr./EN 1.4532
• Can withstand all kinds of cold forming and welding process under the condition of austenite.then through heat treatment can obtain the highest
strength ,Under 550 ℃ with excellent high temperature strength.
• Electric welding property:The steel can adopt arc welding, resistance welding and gas shielded arc welding, gas shielded welding is the best.
Welding is often done in materials solid solution treatment conditions,and do not need to preheat before welding.
When welding requires high strength, the 17-7 with lower content of δ- ferrite is chosen mostly,austenitic stainless steel welding wire can be used
Applied to make aviation thin-wall structure components, all kinds of containers, pipes, spring, valve film, ship shaft,
compressor plate, reactor components, as well as a variety of structure components of chemical equipment, etc.