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Alloy 17-4 Specifications: UNS S17400





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120" Wide Plate
in 304/L & 316/L
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10' x 20 cutting table


ALLOY 17-4
(ALLOY 630, UNS S17400)
Penn Stainless inventory now includes Alloy 17-4 (Alloy 630, UNS S17400) in sheet, sheet coil, plate, round bar, processed flat bar and tubular products.

 

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.

 

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 ALLOY 17-4 (ALLOY 630)
ASTM/ASME................UNS S17400
EURONORM................X5CrNiCuNb16.4
AFNOR.........................Z6CNU17-04
DIN...............................1.4542

 




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