C40
1.0511Medium-carbon unalloyed steel between C35 and C45 in properties. Good balance of strength and machinability. Used for moderately stressed machine parts, shafts, studs, axles, and crankshafts.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AISI | USA | AISI 1040 | G10400 | REF |
| 🇪🇺 | EN | Europe | C40 | 1.0511 | 100% |
Sources: ASTM A29, EN 10083-2:2006
Mechanical properties — Pro
Normalized
| Property | Value | Unit |
|---|---|---|
| Tensile Strength | ||
| Yield Strength | ||
| Elongation | ||
| Elastic Modulus | ||
| Density |
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S355JR
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