Grades & Applications
| GRADE | AISI | C | Si | Mn | Cr | Co | Mo | Ni |
| EN-8 | 1040 | 0.35-0.45 | 0.10-0.35 | 0.60-0.90 | - | 0.06 | - | - |
Application: Crank shafts, automobile axle beams, connecting rods, lightly stressed gears.
| GRADE | AISI | C | Si | Mn | Cr | Co | Mo | Ni |
| EN-9 | 1055 | 0.45-0.60 | 0.10-0.35 | 0.50-0.80 | - | 0.06 | - | - |
Application: Machine parts requiring moderate wear resistance such as crank shafts, cylinders, gears, sprockets.
| GRADE | AISI | C | Si | Mn | Cr | Co | Mo | Ni |
| EN-19 | 4140 | 0.35-0.45 | 0.10-0.35 | 0.50-0.80 | 0.90-1.50 | 0.05 | 0.20-0.40 | - |
Application: Axle shafts, crank shafts, gears, connecting rods, studs, bolts, propeller shaft joints.
| GRADE | AISI | C | Si | Mn | Cr | Co | Mo | Ni |
| EN-24 | 4340 | 0.35-0.45 | 0.10-0.35 | 0.45-0.70 | 0.80-1.40 | 0.05 | 0.20-0.35 | 1.30-1.80 |
Application: Studs, pinions, tappets, boring bars, clutches, chain parts, cam shafts, spin dies, screws, gear shafts.
| GRADE | AISI | C | Si | Mn | Cr | Co | Mo | Ni |
| EN-31 | 52100 | 0.95-1.20 | 0.10-0.35 | 0.30-0.75 | 1.00-1.60 | 0.025 | - | - |
Application: Balls and roller bearings, spinning tools, dies, and components subject to abrasion or high loading.
| GRADE | AISI | C | Si | Mn | Cr | Co | Mo | Ni |
| EN-36 | 3310 | 0.15 | 0.10-0.35 | 0.30-0.60 | 0.60-1.10 | 0.05 | - | 3.00-3.75 |
Application: Disc wheels, grooved shafts, cams, gears, heavy vehicle transmission parts, universal joints.
| GRADE | AISI | C | Si | Mn | Cr | Co | Mo | Ni |
| EN-47 | 6150 | 0.45-0.55 | 0.5 | 0.50-0.80 | 0.80-1.20 | - | 0.05 | - |
Application: Heavy duty volute springs, valve springs, helical and torsional bar springs.
| GRADE | AISI | C | Si | Mn | Cr | Co | Mo | Ni |
| SAE | 8620 | 0.18-.23 | 0.20-0.35 | 0.70-0.90 | 0.40-0.60 | 0.04 | 0.15-0.25 | 0.40-0.70 |
Application: Gears, pinions, camshafts, mining haulage parts, lifting gears.
| GRADE | AISI | C | Si | Mn | Cr | Co | Mo | Ni |
| EN-353 | - | 0.10-0.20 | 0.20-0.35 | 0.50-1.00 | 0.75-1.25 | - | 0.08-0.15 | 1.00-1.50 |
Application: Gears, pinions, camshafts, mining haulage, lifting gears, cage suspension systems.