17 4 Ph Stainless Steel Heat Treatment

Mechanical properties can be optimized with heat treatment.

17 4 ph stainless steel heat treatment.

It is also known as 630 stainless steel. Secondary electron analysis of martensitic ph 17 4 stainless steel sem. Very high yield strength up to 1100 1300 mpa 160 190 ksi can be achieved. Alloy 17 4 can be heat treated to a variety of temperatures to develop a wide range of properties.

Its mechanical properties can be optimized with heat treatment where very high yield strength up to 180 ksi can be achieved. The following chart outlines the times and temperatures required. Alloy 17 4ph is a precipitation hardening martensitic stainless steel with cu and nb cb additions. Back scattered electron analysis of martensitic ph 17 4 stainless steel sem.

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. 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. 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. 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.

Fine cu precipitates are observed. 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 provides this high strength in combination with good mechanical properties at temperatures of up to 600 f 316 c. Alloy 17 4 should not be used at temperatures above 572 f or at very low temperatures.

Eight standard heat treatments have been developed.