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AISI 10400 carbon steel has high carbon content and can be hardened by heat treatment followed by quenching and tempering to achieve 150 to 250 ksi tensile strength.
| UNS DesignationA | Grade | Heat Chemical Ranges and Limits, % | ||||
|---|---|---|---|---|---|---|
| C | Mn | P, max | S, maxB | Pb | ||
| G10400 | 1040 | 0.37-0.44 | 0.60-0.90 | 0.040 | 0.050 | … |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 620 MPa | 89900 psi |
| Yield strength | 415 MPa | 60200 psi |
| Bulk modulus (typical for steels) | 140 GPa | 20300 ksi |
| Shear modulus (typical for steels) | 80 GPa | 11600 ksi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 25% | 25% |
| Reduction of area | 50% | 50% |
| Hardness, Brinell | 201 | 201 |
| Hardness, Knoop (converted from Brinell hardness) | 223 | 223 |
| Hardness, Rockwell B (converted from Brinell hardness) | 93 | 93 |
| Hardness, Rockwell C (converted from Brinell hardness. Value below normal HRC range, for comparison purposes only) | 13 | 13 |
| Hardness, Vickers (converted from Brinell hardness) | 211 | 211 |
| Izod impact (annealed at 790°C (1450°F)) | 45 J | 33.2 ft-lb |
| Izod impact (as rolled) | 49 J | 36.1 ft-lb |
| Izod impact (normalized at 900°C (1650°F) | 65 J | 47.9 ft-lb |