Carbon Steel AISI 1040 Forgings
G10400, A576
AISI 1040 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.
Carbon Steel AISI 1040 Forgings Properties
UNS G10400 Forgings Chemical Requirements
| 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 | ... |
UNS G10400 Forgings Mechanical Requirements
| 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 |