ABRASION RESISTANT IRONS5 Tonnes
White Irons
The unalloyed White Irons have a hardness of 200-350 BHN the lower end of the hardness scale can be machined but generally are used as cast.
The use of white irons is generally in low impact abrasive situations such as liner plates and abrasive material pump cases.
Contact us01484 428203Ni-Hard
(Nickel - Chromium Alloyed)
In these irons a development of iron-chromium carbides produce a tougher more abrasion resistant iron. Hardness between 450-600 BHN
The use for Ni-Hards are used in pulverising, crushing and impact wear plates also in heavy duty pump casings and impellers for slurry and gravel applications.
High Chromium Alloys
All the white irons are difficult to machine, however advances in ceramic machining tips have vastly improved the prospects.
They are nearly impossible to drill and tap and have steel inserts cast into the casting to allow drilling and tapping to take place. Hardness between 600-650 BHN
| Grade | Carbon % | Silicon % | Manganese % | Chrome % | Phosphorus % |
|---|---|---|---|---|---|
| 1A* | 2.4 - 3.4 | 0.5 - 1.5 | 0.2 - 0.8 | 2.0 max | O.15 max |
| 1B | 2.4 - 3.4 | 0.5 - 1.5 | 0.2 - 0.8 | 2.0 max | 0.50 max |
| 1C | 2.4 - 3.0 | 0.5 - 1.5 | 0.2 - 0.8 | 2.0 max | 0.15 max |
| Grade | Carbon % | Silicon % | Manganese % | Nickel % | Chrome % |
|---|---|---|---|---|---|
| 2A | 2.7 - 3.2 | 0.3 - 0.8 | 0.2 - 0.8 | 3.0 - 5.5 | 1.5 - 3.5 |
| 2B* | 3.2 - 3.6 | 0.3 - 0.8 | 0.2 - 0.8 | 3.0 - 5.5 | 1.5 - 3.5 |
| 2C | 2.4 - 2.8 | 1.5 - 2.2 | 0.2 - 0.8 | 4.0 - 6.0 | 8.0 - 10.0 |
| 2D | 2.8 - 3.2 | 1.5 - 2.2 | 0.2 - 0.8 | 4.0 - 6.0 | 8.0 - 10.0 |
| 2E | 3.2 - 3.6 | 1.5 - 2.2 | 0.2 - 0.8 | 4.0 - 6.0 | 8.0 - 10.0 |
| Grade | Carbon % | Silicon % | Manganese % | Moly. % | Nickel % | Chrome % | Copper % |
|---|---|---|---|---|---|---|---|
| 3A | 1.8 - 3.0 | 1.0 max | 0.5 - 1.50 | 2.5 max | 2.0 max | 14 - 17 | 2.0 max |
| 3B | 3.0 - 3.6 | 1.0 max | 0.5 - 1.5 | 3.0 max | 2.0 max | 14 - 17 | 2.0 max |
| 3C | 1.8 - 3.0 | 1.0 max | 0.5 - 1.5 | 3.0 max | 2.0 max | 17 - 22 | 2.0 max |
| 3D | 2.0 - 2.8 | 1.0 max | 0.5 - 1.5 | 1.5 max | 2.0 max | 22 - 28 | 2.0 max |
| 3E* | 2.8 - 3.5 | 1.0 max | 0.5 - 1.5 | 1.5 max | 2.0 max | 22 - 28 | 2.0 max |
| 3F | 2.0 - 2.7 | 1.0 max | 0.5 - 1.5 | 2.5 max | 2.0 max | 11 - 13 | 2.0 max |
| 3G | 2.7 - 3.4 | 1.0 max | 0.5 - 1.5 | 3.0 max | 2.0 max | 11 - 13 | 2.0 max |