Atomized tin powder, mesh to 5µm spherical cuts, low-oxide solder grades and water-atomized PM grades for bronze bearings and friction materials. Sn alloy powders on request.
QUICK ANSWER
Tin powder is gas- or water-atomized tin in mesh to micron cuts, used in powder metallurgy (bronze bearings, friction materials), solder paste and preforms, chemical tin compounds, diamond tool bonds, and cold-spray/thermal-spray coatings. Low melting point, non-toxicity, and excellent alloying behavior make it one of the oldest and most versatile metal powders.
Tin powder's applications split by particle size: fine spherical cuts (Type 3-6 analogous to solder practice) blend into solder pastes and low-melting alloys; mesh-size atomized grades mix with copper to press-and-sinter bronze bearings and friction materials — the classic Cu-Sn powder metallurgy route; and ultrafine tin feeds chemical stannate production. Buyers specify purity (99.9%+), oxide content (the SnO₂ skin affects sintering and soldering), and size distribution. As a benign, non-controlled metal with stable supply, tin powder is a low-risk, steady-volume product line.
MATERIAL DATA
Lot-level controls focus on the chemistry, particle characteristics, and process values that influence manufacturing consistency and finished-part performance.
| Element | Content | Performance Role |
|---|---|---|
| Tin (Sn) | > 99.9 wt% | Base purity for soldering and PM use |
| Oxygen (O) | < 0.3 wt% (fine grades) | Oxide skin control — affects sintering and reflow |
| Lead (Pb) | < 0.05 wt% | RoHS-compliant impurity limit |
| Iron + copper | < 0.05 wt% combined | Impurity panel per application |
| Other metals | < 0.03 wt% combined | Certified per lot |
Final limits can be aligned with the agreed purchase specification.
APPLICATIONS
Powder metallurgy is the traditional anchor: self-lubricating bronze bearings sinter from copper-tin premixes where tin powder quality sets bronze microstructure and oil-retaining porosity; friction materials (clutch and brake facings) use tin to bond and lubricate the sintered matrix; and structural PM parts use tin additions for dimensional control. Bearing and friction producers buy mesh-size atomized tin on oxide content and size consistency — steady industrial demand tracking automotive and machinery cycles.
Electronics and chemicals provide growth and value: solder paste formulators blend fine spherical tin (or tin-rich alloy powders) for low-temperature and specialty pastes; tin chemicals (stannates for ceramics, SnO₂ precursors, electroplating salts) start from dissolved tin powder; and cold-spray tin coatings serve EMI shielding and corrosion repair. Diamond tool bonds add a steady niche where tin lowers sintering temperature and improves bronze bond ductility.
NON-FERROUS BASE METAL POWDERS
CUSTOM SUPPLY
We supply tin powder in mesh PM grades, spherical fine cuts for solder and chemical use, and ultrafine grades for stannate chemistry, with certified purity and oxygen per lot. Custom distributions, tin alloy powders (SnCu, SnAg, SnBi) in the same quality system, and small-to-bulk packaging options are standard. Not export-controlled.
We supply tin powder in mesh PM grades, spherical fine cuts for solder and chemical use, and ultrafine grades for stannate chemistry, with certified purity and oxygen per lot.
Custom distributions, tin alloy powders (SnCu, SnAg, SnBi) in the same quality system, and small-to-bulk packaging options are standard.
MATERIAL COMPARISON
| Comparison Point | This Product | Water-Atomized |
|---|---|---|
| Morphology | Spherical — flows well | Irregular — better green strength |
| Oxide content | Lower | Higher surface oxides |
| PM pressing | Good | Better — irregular interlocks |
| Solder paste use | Preferred — prints cleanly | Unsuitable |
| Price | Higher | Lower |
| Best use | Solder, cold spray, fine chemistry | Bronze premix, friction, pressing |
TECHNICAL FAQ
Need a different chemistry, particle range, or processing route? Our material team can review the requirement and supply window.
Water-atomized -200 or -325 mesh with certified oxide — irregular morphology gives the green strength pressed compacts need, and controlled oxide ensures clean sintering into bronze.
Yes — spherical Type 3-5 cuts with low oxygen and certified size distribution, matching IPC solder powder practice for specialty paste formulation.
99.9% minimum with lead below RoHS limits; 99.99% available for electronics and chemical synthesis.
Yes — we atomize SnCu0.7, SnAg3, SnBi58 and custom tin alloys to the same powder specifications. See Category 5 for the full solder alloy range.
No. Tin ships without licensing requirements.
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