17-4 stainless steel 17-4 stainless steel SAE type 630 stainless steel (more commonly known as 17-4; also known as UNS 17400) is a grade of martensitic precipitation-hardened stainless steel. It contains approximately 15–17.5% (17) chromium and 3–5% (4) nickel, as well as 3–5% copper. 17-4 can be heat treated to high levels of strength and hardness, and features corrosion resistance and machinability comparable to austenitic 304 stainless. Being martensitic, 17-4 is magnetic. 17-4 is capable of being hardened up to approximately 44 Rc when heat treated to condition H900. Overaging (aging beyond the peak strength condition) improves resistance to stress corrosion cracking. Uses
The Stainless Steel Rat speech in China since her detention in November 2002. Her screen name is often translated as Stainless Steel Mouse. In "The Librarians" episode "And the Happily Ever Afters", Flynn Carsen refers to Ezekiel Jones, a thief, "master of technologies" as the "Stainless Steel Rat". "Galaxy" reviewer Floyd C. Gale rated the first novel four stars out of five, saying "though pure entertainment, [it] underlines SF's role in providing speculative thought about potential problems." The Stainless Steel Rat James Bolivar diGriz, alias "Slippery Jim" and "The Stainless Steel Rat", is a fictional character and the antihero of a series of comic