Stainless Steels

Surface treatment and maintenance are required to protect iron from its tendency to rust. From the need to prevent this loss to rust came the developments of rust-free steel and stainless steel. To prevent rust, at least 10.5 percent chromium is used to form a fine oxidation (passive) film on the surface of the steel. Nippon Yakin produces a variety of stainless steel products superior to conventional stainless steel. Features of these products include resistance to heat, grain boundary corrosion, stress corrosion cracking and weather as well as being highly formable, machinable, and strong with or without being magnetizable.

Nippon Yakin Grade UNS ASME ASTM DIN EN
NAS 301 S30100 A240
NAS 304 S30400
SA-240 A240 EN10028-7
NAS 305 S30500 A240
NAS 316 S31600
SA-240 A240
NAS 317 S31700 A240
NAS 301L S30103 A240
NAS 304L S30403 A240
NAS 347 S34700 SA-240 A240
NAS 316L S31603 SA-240 A240 DIN17440
NAS 317L S31703 SA-240 A240
NAS 304SS S30400
SA-240 A240 EN10028-7
NAS 303AM S30300 A895
NAS 301N
NAS 304N2
NAS 309S S30908 SA-240 A240
NAS 310S S31008 SA-240 A240

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