C45
1.0503Medium carbon unalloyed quality steel. Good machinability and moderate strength after heat treatment. Widely used for shafts, spindles, pins, studs, and general machine parts.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | AISI 1045 | G10450 | REF |
| 🇪🇺 | EN | Europe | C45 | 1.0503 | 100% |
| 🇯🇵 | JIS | Japan | S45C | — | 98% |
| 🇬🇧 | BS | United Kingdom | 080M46 / EN8 | — | 96% |
| 🇨🇳 | GB | China | 45 | — | 95% |
Sources: ASTM A29, EN 10083-2:2006, JIS G4051, BS 970, GB/T 699
Mechanical properties
Compatibility verdict
C45 and S45C: 98% composition match
Related materials
S355JR
1.0045High-strength low-alloy structural steel with minimum yield strength of 355 MPa. Standard grade for bridges, buildings, cranes, and general structural applications. Impact tested at +20°C (JR).
S235JR
1.0038General-purpose structural steel with minimum yield strength of 235 MPa. The most common structural steel grade in Europe for general construction, frames, and non-critical structural applications.
C35
1.0501Medium-carbon unalloyed steel with moderate strength. Good machinability and weldability. Used for lightly stressed components like levers, axles, bolts, and general machine parts.
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