This grade cannot be used at temperatures higher than 300o C (572o F) or very low temperatures. It has strong corrosion resistance to atmospheric and dilute acids or salts, and its corrosion resistance is the same as 304 and 430. The corrosion resistance of 17-4PH alloy is superior to any other standard hardenable stainless steel.

In most cases, its corrosion resistance is no less than 304. If there is a risk of stress corrosion cracking, the higher curing temperature must be above 550oC, preferably 590oC (1094oF). The optimal tempering temperature in chloride medium is 550oC-1022oF. The optimal tempering temperature in H2S medium is 590oC-1094oF

This alloy is susceptible to corrosion or crack corrosion in static seawater. Its corrosion resistance in the petrochemical, food processing, and paper industries is equivalent to that of 304L grade. We can perform mechanical processing on 17-4 PH alloys that have been treated with solution, quenched with water, or hardened. The processing conditions vary with the hardness of the material.