17-7PH precipitation hardening stainless steel is a kind of martensitic steel with good strength and processing performance. The overall performance of the alloy becomes better after heat treatment. The composition complies with the GB/T1220-2007 standard and can be used for parts such as springs. . 17-7PH contains a high content of chromium, up to 17%, and has good corrosion resistance. It takes a slant to add aluminum alloy elements to the alloy to enhance the strength of the material.
Chromium Cr: 16.0～18.0