1045 Steel
Medium-carbon steel (SAE/AISI 1045) with a good combination of mechanical strength, hardness, toughness, and machinability; compared with low-carbon steels, it withstands higher loads, moderate impact, and wear conditions. It can be supplied hot forged, hot rolled, cold drawn, normalized, annealed, or heat treated. It accepts quenching and tempering, as well as induction or flame surface hardening. It is used in shafts, gears, bolts, keys, rollers, screws, and machined components subject to mechanical stress; because of its medium carbon content, it has limited weldability.
| SAE / AISI | EN | DIN | JIS |
|---|---|---|---|
| 1045 | C45 | Ck45 | S45C |
| % | C | Si | Mn | P | S |
|---|---|---|---|---|---|
| Min | 0.43 | 0.15 | 0.60 | — | — |
| Max | 0.50 | 0.35 | 0.90 | 0.040 | 0.050 |
Hot rolledUntreated
Hot forgedUntreated
Cold drawnUntreated
Plates1/2" – 10"12.7 mm – 254 mm
Round bars1/4" – 4"6.3 mm – 101.6 mm
Flat barsCut to size- Axles and shafts
- Gears and pinions
- High-strength bolts
- Studs and bolts
- Industrial rollers
- Crankshafts and connecting rods
- Mechanical couplings
- Wedges and keys
- Machinery components
Note: The information and values in this data sheet are provided for reference only and may vary depending on manufacturing, treatment and application conditions. They do not constitute guaranteed specifications, so use and interpretation of this data is the user's responsibility.
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