17-4PH SUS630 UNS S17400 1.4542 X5CrNiCuNb16.4

General Properties

Alloy 17-4 is a chromium-copper precipitation hardening stainless steel that is used for applications requiring high strength and a moderate level of corrosion resistance. It is one of the most widely used precipitation hardening grades, as it has high strength hardness up to about 572°F while demonstrating good corrosion resistance in all heat treated conditions. Alloy 17-4 has adequate resistance to atmospheric corrosion or in diluted acid salts where its corrosion resistance is equivalent to Alloy 304 or 430. 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. Alloy 17-4 should not be used at temperatures above 572°F or at very low temperatures.

Specifications: UNS S17400

Applications:

Alloy 17-4 is commonly used for applications requiring high strength and a moderate level of corrosion resistance. Some applications that frequently use Alloy 17-4 include:

· Aircraft

· Nuclear waste casks

· Paper mills

· Oil fields

· Mechanical components

· Chemical process components

· Food industry

· Aerospace

Standards:

· ASTM/ASME: UNS S17400

· EURONORM: X5CrNiCuNb16.4

· AFNOR: Z6CNU17-04

· DIN: 1.4542

Chemical Properties: