Superfine Pure 99.9% Metal Stannum Sn Powder / Tin Powder
Product Description
Tin powder, also called Stannum powder, short as Sn powder. It's a grey-green powder. Soluble in concentrated hydrochloric acid, sulfuric acid, aqua regia, concentrated nitric acid, hot caustic acid solution, slowly soluble in cold dilute hydrochloric acid, dilute nitric acid and hot dilute sulfuric acid, cold caustic acid solution, dissolve more slowly in acetic acid. It is stable in air, but tin powder is easy to oxidize, especially in moist air. Tin / Sn powder widely used in the production of porous self-lubricating bronze bearings, diamond tools, powder metallurgy structural parts, friction plates, brake linings, clutches, metal-graphite brushes, bronze filters, rubber and plastic additives, chemicals, etc.
Specification
| Grade | Sn-1 | Sn-2 | Sn-3 | |
| chemical composition (%) | Sn | 99.9 | 99.9 | 99.9 |
| Fe | <0.015 | <0.015 | <0.015 | |
| Pb | <0.04 | <0.03 | <0.04 | |
| S | <0.01 | <0.01 | <0.01 | |
| Cu | <0.04 | <0.03 | <0.03 | |
| Size | -200 | -325 | -100 | |
| Bulk Density(g/cm³) | 3.3-4.3 | 3.2-3.8 | 3.6-4.6 | |
| Taylor Sieve(mesh) | 150 | <1 | - | <10 |
| 200 | 3.0-10 | <1 | 20-40 | |
| 325 | 30-50 | <5 | 20-40 | |
| -325 | 40-70 | 94-99 | 10-50 | |
SEM
Application
With the development of lead-free trend in the world, electronic product manufacturers will use more tin powder materials in their products. At the same time, along with the environmental protection consciousness unceasing enhancement, the non-toxic environmental protection property of tin powder will make it in the future will be applied to the medicine, the chemical industry, the light industry, the food, the health care, the artistic article and so on packing domain.
1. Used in the manufacture of solder paste
2. Electrical carbon products
3. Friction materials
4. Oil bearing and powder metallurgy structure materials
