| PRODUCT | GRADE | EQUIVALENT STANDARD | CHEMICAL COMPOSITION (%) | SUPPLY CONDITION | APPLICATION | TYPE OF APPLICATION | ||||||||||
| AISI | DIN | JIS | C | Si | Mn | Cr | Mo | Ni | V | W | Oth. | |||||
| Martensitic Stainless Steel | ||||||||||||||||
 | N695 | – | 1.4125, | SUS 440C | 1.05 | 0.40 | 0.40 | 17.0 | 0.50 | – | – | – | – | 285 HB | Magnetic, high C content, good purity, Good strength, wear-resistant, corrosion-resistant. can be hardened, suitable for making bearings, roller valves, high quality blades |  |
| 440 A | – | 1.4122, | SUS 440A | 0.65-0.75 | 1.00 | 1.00 | 16.0-18.0 | 0.75 | – | – | – | P/0.04, S/0.03 | 269 HB | High carbon, highest hardness, purity, good strength, wear-corrosion resistant, can be hardened suitable for making ball bearings, valves, high quality blades |  |
| 440 B | – | 1.4112, | SUS 440B | 0.75-0.95 | ||||||||||||
| 440 C | – | 1.4125, | SUS 440C | 0.95-1.20 | ||||||||||||
 | 431 | – | 1.4057, | SUS 431 | 0.20 | 1.00 | 1.00 | 15.0-17.0 | – | 1.25-2.50 | – | – | P/0.04, S/0.03 | 210 HB | Nickel-bearing grade, tough, resistant to torsion, the most corrosion resistance, can be hardened suitable for spare parts, marine machineries, lab equipments |  |
| 420J2 | – | 1.4028, | SUS 420 J2 | 0.15-0.36 | 1.00 | 1.00 | 12.0-14.0 | – | 1.00 | – | – | P/0.04, S/0.03 | 241 HB | Surgical grade, high corrosion resistant, a mixture of Cr 12% tough Resistant to abrasion – corrosion – impact force, suitable for making blades, molds |  |
| 420 | – | 1.4021, | SUS 420 J1 | – | ||||||||||||
| 416 | – | 1.4005, | SUS 416 | 0.15 | 1.00 | 1.30 | 12.0-14.0 | 0.60 | – | – | – | P/0.06, S/0.15 | 262 HB | Free machining grade with a mixture of Mn-S, good machinability, resistant to corrosion of acid-alkali-water-wind suitable for making gears, valves, couplings |  |
| 410 | – | 1.4006, | SUS 410 | 0.15 | 1.00 | 1.00 | 11.5-13.5 | – | 0.75 | – | – | P/0.04, S/0.03 | – | General purpose, composed of a mixture of Cr 11.5%, good strength, medium heat resistance-diluted corrosion, can be hardened suitable for axles, valves, bearings |  |
