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 | EN / DIN | JIS |
|---|---|---|---|
| NAS 301 | S30100 | ― | SUS 301 |
| NAS 304 | S30400 S30409 |
1.4301 | SUS 304 |
| NAS 305 | S30500 | ― | SUS 305 |
| NAS 316 | S31600 S31609 |
― | SUS 316 |
| NAS 317 | S31700 | ― | SUS 317 |
| NAS 304AW | ― | ― | SUS 304N1 |
| NAS 301L | S30103 | ― | SUS 301L |
| NAS 304L | S30403 | ― | SUS 304L |
| NAS 347 | S34700 | ― | SUS 347 |
| NAS 316L | S31603 | 1.4435 | SUS 316L |
| NAS 317L | S31703 | ― | SUS 317L |
| NAS 86L | ― | ― | SUS 305J1 |
| NAS 125 | ― | ― | SUS 315J2 |
| NAS 144MLK | ― | ― | SUS 317J1 |
| NAS 304MK | ― | ― | SUS 304J2 |
| NAS 304DJ | ― | ― | SUS 304J1 |
| NAS 304SS | S30400 S30409 |
1.4301 | SUS 304 |
| NAS XM-7 | ― | ― | SUS XM7 |
| NAS 303AM | S30300 | ― | SUS 303 |
| NAS 301N | ― | ― | ― |
| NAS 304N2 | ― | ― | SUS 304N2 |
| NAS NM15 | ― | ― | ― |
| NAS 302B | S30215 | ― | SUS 302B |
| NAS 309S | S30908 | ― | SUS 309S |
| NAS 310S | S31008 | ― | SUS 310S |