Whitemetal Alloys
The composition of the most common whitemetal alloys, used by Oiltech Bearings, are listed below.
Whitemetal Alloys
Whitemetals (also known as Babbitt) are alloys, typically tin based but some applications will use a lead based alloy. Tin based alloys are made from tin, antimony, copper and sometimes contain additives such as cadminium. The common standards in use are BS3332 and ASTM B23. The most common alloys are shown below.
| Grade | Tin (Sn) | Antimony (Sb) | Copper (Cu) | Lead (Pb) | Cadmium (Cd) |
|---|---|---|---|---|---|
| BS3332-A | Balance (89%) | 7-8% | 3-4% | 0.3% max | 0.05% |
| BS3332-B | Balance (88%) | 7-8% | 3-4% | 0.3% max | 0.8-1.2% |
| ASTM B23 Grade 2 | 88-90% | 7-8% | 3-4% | - | - |
| UNI 4515-MB80 | 79-81% | 10-12% | 8.25-9.75 | 0.35% max | - |
| JIS H5401 WJ2 | balance | 8-10% | 5-6% | - | - |
| ISO 4381 SnSb12Cu6Pb | balance | 11-13% | 5-7% | 1-3% | - |