| 220M07 (En 1A) FREECUTTING |
| BS 970 | SAE (A1S1) | WERKSTOFF No |
| 220 M 07 | 1112 | 1.0711 |
| CHEMICAL COMPOSITION |
| Carbon | Silicon | Manganese | Sulphur | Phosphorus |
| 0.07 - 0.15 | 0.10 Max. | 0.80 - 1.20 | 0.20 - 0.30 | 0.07 Max. |
| MECHANICAL PROPERTIES |
| SIZE (Diameter or Width across flats)mm |
| PROPERTY | 13.5mm or less | 13.5mm to 38.0mm | 38.0mm to 63.5mm | 63.5mm to 100mm |
| Tensile Strength, MPa | 490 | 430 | 385 | 355 |
| Elongation percent, Min. | 10 | 14 | 14 | 14 |
| STANDARD STOCK SIZES |
| SIZE | Kg/m | SIZE | Kg/m | SIZE | Kg/m | SIZE | Kg/m | SIZE | Kg/m | SIZE | Kg/m | SIZE | Kg/m | ||||||
| 6 | 0.222 | 10 | 0.617 | 14 | 1.175 | 20 | 2.466 | 26 | 4.168 | 32 | 6.313 | 40 | 9.865 | ||||||
| 7 | 0.302 | 11 | 0.746 | 15 | 1.387 | 22 | 2.984 | 27 | 4.495 | 35 | 7.553 | 45 | 12.485 | ||||||
| 8 | 0.395 | 12 | 0.888 | 16 | 1.578 | 24 | 3.551 | 28 | 4.824 | 36 | 7.990 | 50 | 15.413 | ||||||
| 9 | 0.499 | 13 | 1.042 | 18 | 1.998 | 25 | 3.853 | 30 | 5.549 | 38 | 8.903 | 55 | 18.650 |
| TYPICAL USES |
|
For high speed production of repetition work eg.. Manufacture of bushes, pins, bolts,
nuts, studs and couplings, where the major requirements are rapid machining and maximum tool life. Cutting speeds on bright drawn freecutting steel bar are considerably above those of ordinary mild quality steel, and components are produced of similar mechanical properties with a far superior finish. |