JIS G 4106 : Manganese Steel and Manganese Chromium Steels for Machine Structural Use
| Jenis Material |
Chemical Composition % | ||||||
| C | Si | Mn | P Max. | S Max. | Cr | ||
| SMn 420 | 0.17∼0.23 | 0.15∼0.35 | 1.20∼1.50 | 0.030 | 0.030 | – | |
| SMn 433 | 0.30∼0.36 | 0.15∼0.35 | 1.20∼1.50 | 0.030 | 0.030 | – | |
| SMn 438 | 0.35∼0.41 | 0.15∼0.35 | 1.35∼1.65 | 0.030 | 0.030 | – | |
| SMn 443 | 0.40∼0.46 | 0.15∼0.35 | 1.35∼1.65 | 0.030 | 0.030 | – | |
| SMn C 420 | 0.17∼0.23 | 0.15∼0.35 | 1.20∼1.50 | 0.030 | 0.030 | 0.35∼0.70 | |
| SMn C 443 | 0.40∼0.46 | 0.15∼0.35 | 1.35∼1.60 | 0.030 | 0.030 | 0.35∼0.70 | |
Note : As impurities, Ni 0.25 Cu 0.30% shall not be exceeded for each class.
Neither Cr 0.35% shall not be exceeded for SMn 433, SMn 438, SMn 443 and SMn 420.
