17-4 stainless steel plate is a chromium-copper precipitation hardening stainless steel material used for applications requiring high strength and a moderate level of corrosion resistance. High 17-4 stainless steel plate strength is maintained to approximately 600 degrees Fahrenheit (316 degrees Celsius).

General Properties

Stainless steel 17-4 stainless steel plate is a precipitation hardening martensitic stainless steel with Cu and Nb/Cb additions. The grade combines high strength, hardness (up to 572°F / 300°C), and corrosion resistance.

Mechanical properties can be optimized with heat treatment. Very high yield strength up to 1100-1300 MPa (160-190 ksi) can be achieved.

The grade should not be used at temperatures above 572°F (300°C) or at very low temperatures. It has adequate resistance to atmospheric corrosion or in diluted acids or salts where its corrosion resistance is equivalent to Alloy 304 or 430.

Chemistry Data :

Carbon	0.07 max
Chromium	15 – 17.5
Copper	3 – 5
Iron	Balance
Manganese	1 max
Nickel	3 – 5
Niobium	0.15 – 0.45
Niobium+Tantalum	0.15 – 0.45
Phosphorus	0.04 max
Silicon	1 max
Sulphur	0.03 max