The Steel Class S45C is a steel of JIS G 4051 / Japanese norm. It is a regulated standard for heat treated steels, alloy steels and free-cutting steels.
JIS S45C Steel Specifications
Chemical Values:
| Standard | Kalite | C | Mn | P | S | Si |
| JIS G4051 | S45C | 0.42-0.48 | 0.60-0.90 | 0.03 | 0.035 | 0.15-0.35 |
