SAE Type 630 stainless steel (more commonly known as 17-4 PH, or simply 17-4; also known as UNS 17400) is a grade of martensitic precipitation hardened stainless steel. It contains approximately 15-17.5% chromium and 3-5% nickel, as well as 3-5% copper. The name comes from the chemical makeup which is approximately 17% chromium and 4% nickel.
17-4 can be heat treated to high levels of strength and hardness, and features corrosion resistance and machinability comparable to austenitic 304 stainless. Being martensitic, 17-4 is magnetic.
Uses for 17-4 stainless steel include components which require high hardness and/or corrosion resistance at temperatures of up to 600 °F (316 °C). Specific applications for 17-4 include the petroleum and chemical industries, as well as use in aircraft parts.
|0.07 max.||1.0 max.||0.04 max.||0.03 max.||1.0 max.||15.0-17.5||3.0-5.0||3.0-5.0||0.15-0.45|
|This alloy-related article is a stub. You can help popflock.com resource by .|
|This metalworking article is a stub. You can help popflock.com resource by .|