| Class | Micro Structure |
Symbol of Grade | Corresponding Standard | Mechanical Properties | |||
| JIS | ASTM | Tensile Strength (kgf/mm²) |
Elongation (%) |
Hardness (HB) |
|||
|
Structural Purposes |
|
SCC5 | SCC5 | >70 | >9 | >210 | |
| SCCrM3 | SCCrM3 | >75 | >9 | >217 | |||
| SCNCrM2 | SCNCrM2 | >90 | >9 | >269 | |||
| Corrosion-Resistant Steel |
Martensite | SCS1 | SCS1 | CA15 | >55 | >18 | 163 - 229 |
| SCS2 | SCS2 | >60 | >16 | 170 - 235 | |||
| SCS24 | SCS24 | CB7Cu-1 | >126 | >6 | >375 | ||
| Ferrite
Austenite |
SCS11 | SCS11 | >60 | >13 | >241 | ||
| PNX-D1 | >80 | >10 | 240 - 280 | ||||
| Austenite | SCS13 | SCS13 | CF8 | >45 | >30 | <183 | |
| SCS14 | SCS14 | CF8M | >45 | >28 | <183 | ||
| SCS16 | SCS16 | CF3M | >40 | >33 | <183 | ||
| SCS19 | SCS19 | CF3 | >40 | >33 | <183 | ||
| SCS23 | SCS23 | CN7M | >40 | >30 | <183 | ||
| PNX-Y170 | YUS170 | >60 | >30 | <200 | |||
| Heat-Resistant Steel |
Ferrite + Austenite |
HB404 | SCH11 | HD | >60 | >5 | |
| HB409 | SCH17 | HE | >50 | >9 | |||
| Austenite | HB512 | SCH13 | HH | >50 | >10 | ||
| HB515 | SCH18 | HI | >50 | >10 | |||
| HB520 | SCH22 | HK | >45 | >10 | |||
| HB525Nb | IN519 | >45 | >10 | ||||
| HB535 | SCH15 | HT | >45 | >4 | |||
| PH48C | >45 | >5 | |||||
| PH50Nb | IN657 | >60 | >10 | ||||
| Wear Resistant Steel |
Martensite | ARSL1 | >120 | >480 | |||
| ARSL2 | >120 | >500 | |||||
| ARSL3 | >120 | >5 | HS>60 | ||||
| ARC2 | >150 | HS>65 | |||||
| Carbide | AROM2 | > 70 | HS>75 | ||||
| AR117 | A532 Class  |
> 60 | HS>80 | ||||
| AR124 | > 70 | HS>75 | |||||
| AR128N2 | A532 Class  |
> 60 | HS>70 | ||||
