| Equivalent Grade by Chemistry | ||
|---|---|---|
| Britain | Bs970 | EN8 |
| Germany | DIN | CK45 |
| USA | AISI | 1045 |
| Germany | Werkstoff No. | 1.1191 |
En8 steel is a medium tensile steel supplied in the black hot rolled or normalized condition. En8 steel is characterized by good weldability, good machinability, and high strength and impact properties in either the normalized or hot rolled condition.
En8 is an unalloyed medium carbon steel used in applications where better properties than mild steel are required, but with an eye to the cost, thus avoiding purchase of a steel alloy. En8 can be heat treated to provide a good surface hardness and moderate wear resistance.
| Element | Carbon | Silicon | Manganese | Sulphur | Phosphorus |
|---|---|---|---|---|---|
| Content (%) | 0.36 - 0.44 | 0.10 - 0.40 | 0.60 - 1.00 | 0.05 Max | 0.05 Max |
En 8 is used in the manufacture of dynamo and motor shafts, crankshafts, connecting rods, heat treated bolts, driving rings and flanges, railway couplings, axles, brackets, housings and parts not subjected to high stresses or severe wear.
| Equivalent Grade by Chemistry | ||
|---|---|---|
| Britain | Bs970 | EN9 |
| Germany | DIN | CK55 |
| USA | AISI | 1055 |
| Germany | Werkstoff No. | 1.1203 |
En9 has a degree of carbon content which enables it to be flame or induction hardened to produce a high surface hardness and excellent wear resistance. It has a tensile strength that makes it suitable for components where abrasion resistance rather than toughness is of primary importance.
| Element | Carbon | Silicon | Manganese | Sulphur | Phosphorus |
|---|---|---|---|---|---|
| Content (%) | 0.50 - 0.60 | 0.10 - 0.40 | 0.50 - 0.90 | 0.05 Max | 0.05 Max |
En9 is ideal in the manufacture of sprockets, keys, small gears, machine tools, grinding balls, cylinders, cams and crankshafts, grinding balls for ball mills and ball race rings among many others.
| Equivalent Grade by Chemistry | ||
|---|---|---|
| Britain | Bs970 | EN19 |
| Germany | DIN | 42CrMo4 |
| USA | AISI | 4140 |
| Germany | Werkstoff No. | 1.7225 |
En19 is a high quality alloy steel with tensile strength combining good ductility and shock resistance. It is the material that lends itself well to any application where strength is the primary consideration.
| Element | Carbon | Silicon | Manganese | Chromium | Molybdenum | Sulphur | Phosphorus |
|---|---|---|---|---|---|---|---|
| Content (%) | 0.36 - 0.44 | 0.10 - 0.35 | 0.70 - 1.00 | 0.90 - 1.20 | 0.25 - 0.35 | 0.035 Max | 0.040 Max |
It is suitable for applications with very high loading such as engine gear boxes. Popular in the automotive sector it is suitable for the manufacture of axles, high tensile bolts and studs, propeller shaft joints, rifle and breech mechanisms for small arms and induction hardened track pins. It is the preferred grade for the Oil & Gas sector.
| Equivalent Grade by Chemistry | ||
|---|---|---|
| Britain | Bs970 | EN24 |
| Germany | DIN | 35CrNiMo6 |
| USA | AISI | 4340 |
| Germany | Werkstoff No. | 1.6582 |
En 24 is a high quality, high tensile, alloy steel which is usually supplied readily as machinable in ‘T’ condition. It combines tensile strength, shock resistance, good ductility and resistance to wear.
| Element | Carbon | Silicon | Manganese | Nickle | Chromium | Molybdenum | Sulphur | Phosphorus |
|---|---|---|---|---|---|---|---|---|
| Content (%) | 0.36 - 0.44 | 0.10 - 0.35 | 0.45 - 0.70 | 1.30 - 1.70 | 1.00 - 1.40 | 0.20 - 0.35 | 0.035 Max | 0.040 Max |
En 24 is used in manufacturing differential shafts, push rods, Axles, connecting rods, pinion sleeves, high duty connecting rods, automobile main shafts, high tensile bolts and power transmission slide gears among others.