| Element | Content(%) |
|---|---|
| Iron, Fe | 96.595-97.72 |
| Manganese, Mn | 0.750-1.00 |
| Nickel, Ni | 0.400-0.700 |
| Chromium, Cr | 0.400-0.600 |
| Carbon, C | 0.380-0.430 |
| Molybdenum, Mo | 0.200-0.300 |
| Silicon, Si | 0.150-0.300 |
| Sulfur, S | 0.0400 |
| Phosphorous, P | 0.0350 |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 695 MPa | 101000 psi |
| Yield strength | 415 MPa | 60200 psi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
| Shear modulus (typical for steel) | 80 GPa | 11600 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (50mm) | 22.20% | 22.20% |
| Izod Impact | 41 J | 30.2 ft.lb |
| Hardness, Brinell | 201 | 201 |
| Hardness, Knoop (converted from Brinell hardness) | 223 | 223 |
| Hardness, Rockwell B (converted from Brinell hardness) | 93 | 93 |
| Hardness, Rockwell B (converted from Brinell hardness, value below normal HRC range, for comparison only) | 13 | 13 |
| Hardness, Vickers (converted from Brinell hardness) | 211 | 211 |
| Machinability (hot rolled and cold drawn, based on 100 machinability for AISI 1212 steel) | 65 | 65 |
Sheets / Plates
| Production Route | Hot Rolled, Cold Rolled |
| Material Standard | AISI, ASTM, ASME, DIN, BS, EN, ISO, JIS, GOST, SAE, IS & Custom Chemistry |
| Size | Width from 100mm to 3000mm ; Length from 500mm to 12000mm |
| Thickness | 0.1mm to 400mm |
| Delivery Condition | As Rolled, Annealed, Quenched and Tempered, Normalized |
| Surface Finish | Plain, Brushed, Cladded |
AISI 8740 Equivalent Grade / Specifications
- DIN 1.6546
- UNI 40 NiCrMo 2 KB
- B.S. Type 7
- AMS 6322
- AMS 6322F
- AMS 6323
- AMS 6323D
- AMS 6325
- AMS 6325D
- AMS 6327D
- AMS 6358
- AMS 6358B
- ASTM A322
- ASTM A331
- ASTM A505
- ASTM A519
- SAE J770
- SAE J412
- AMS 6327
- MIL SPEC MIL-S-6049
- AMS 7496
- ASTM A29
- ASTM A752
- MIL S-6049
- SAE J1397
- ASTM A320 (L7C, L73)
- SAE J404