17 4 Ph Stainless Steel Heat Treatment

Stainless steel al 17 4 alloy summary of heat treating al 17 4 alloy minimum properties specified in aerospace material specification ams 5604 heat treat to produce martensitic structure precipitation heat treatment to produce desired strength solution heat treatment at 1950 f 1066 c precipitation hardening heat treatment 900 f.

17 4 ph stainless steel heat treatment.

17 4 ph provides this high strength in combination with good mechanical properties at temperatures of up to 600 f 316 c. Alloy 17 4 can be heat treated to a variety of temperatures to develop a wide range of properties. 17 4 ph steel contains 4 copper and may be hardened by a single low temperature precipitation hardening heat treatment producing excellent mechanical properties at a high strength level. High strength 17 4 ph stainless steel with a higher chromium content than 15 5 ph stainless steel this high strength 17 4 ph offers better corrosion resistance.

Alloy 17 4ph is a precipitation hardening martensitic stainless steel with cu and nb cb additions. Tem bright field image of the d ferrite phase in 17 4 ph stainless steel after solution treatment. Its mechanical properties can be optimized with heat treatment where very high yield strength up to 180 ksi can be achieved. Fine cu precipitates are observed.

Back scattered electron analysis of martensitic ph 17 4 stainless steel sem. Alloy 17 4 should not be used at temperatures above 572 f or at very low temperatures. Heat at 1900ºf 1040ºc for 30 minutes and cool to below 90ºf 32ºc to allow complete. Type 17 4 ph alloy is hardened by heating solution treated material condition a to between 900 ºf 480ºc and 1150ºf 620ºc for one to four hours depending upon the temperature then air cooling.

17 4 ph stainless steel 2 as supplied from the mill in condition a 17 4 ph stainless steel can be heat treated at a variety of temperatures to develop a wide range of properties. The following chart outlines the times and temperatures required. Secondary electron analysis of martensitic ph 17 4 stainless steel sem. It is also known as 630 stainless steel.

Very high yield strength up to 1100 1300 mpa 160 190 ksi can be achieved.