17-4 PH Steel Plate

The high tensile strengths of precipitation hardening stainless steels come after a heat treatment process that leads to precipitation hardening of a martensitic or austenitic matrix. Hardening is achieved through the addition of one or more of the elements Copper, Aluminium, Titanium, Niobium, and Molybdenum.

Grade	C	Mn	Si	P	S	Cr	Ni	Cu	Nb+Ta
630	min. max	- 0.07	- 1	- 1	- 0.04	- 0.030	15 17.5	3 5	3 5	0.15 0.45

Solution Treatments.

As supplied 17-4 PH is usually in the solution treated condition (Condition A). It can be heat treated at different temperatures to offer a wide range of properties.

17-4 PH steel is a grade of martensitic, precipitation-hardening stainless steel with the additions of chromium, nickel, and copper. 17-4 stainless steel has a valuable combination of high strength, good corrosion resistance, and toughness in both base metals and welds.

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