Carbon steels have a composition with carbon as the significant alloying element. They may contain 0.4% of silicon and 1.2% of manganese. Molybdenum, chromium, nickel, copper, and aluminium are also present in small quantities. AISI 1118 carbon steel is a free machining steel. It is added with sulfur in order to improve its machining characteristics.
| Element | Content(%) |
|---|---|
| Iron , Fe | 98.03 - 98.48 |
| Manganese, Mn | 1.30 - 1.60 |
| Carbon, C | 0.14 - 0.20 |
| Sulfur, S | 0.080 - 0.13 |
| Phosphorous, P | ≤ 0.040 |
| Properties | Metric | Imperial |
|---|---|---|
| Tensile strength | 525 MPa | 76100 psi |
| Yield strength (depending on temper) | 315 MPa | 45700 psi |
| Elastic modulus | 190-210 GPa | 27557-30458 ksi |
| Bulk modulus (typical for steel) | 140 GPa | 20300 ksi |
| Shear modulus (typical for steel) | 80.0 GPa | 11600 ksi |
| Poisson’s ratio | 0.27-0.30 | 0.27-0.30 |
| Elongation at break (in 50 mm) | 32% | 32% |
| Reduction of area | 70% | 70% |
| Hardness, Brinell | 149 | 149 |
| Hardness, Knoop (converted from Brinell hardness) | 169 | 169 |
| Hardness, Rockwell B (converted from Brinell hardness) | 80 | 80 |
| Hardness, Vickers (converted from Brinell hardness) | 155 | 155 |
| 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 |
ASTM A29
ASTM A510
ASTM A576
SAE J1397
SAE J403
SAE J412
SAE J414
ASTM A107
ASTM A108
FED QQ-S-637 (1118)
1) Structures in Buildings, bridges, railway stations.
2) Fabrication of pipeline components & Industrial equipment.
3) Construction of automotive bodies, warehouses, shipping containers.
4) Commercial appliances, etc.