Silicon Metal Powder 45 μm for Powder Metallurgy Industrial Materials and Alloy Manufacturing

Press-and-sinter shops live by particle packing. A 45 μm silicon metal powder packs predictably in die cavities, sinters without excessive shrinkage, and distributes alloying silicon uniformly through the compact — the three behaviors PM formulators optimize for. Industrial material producers and alloy manufacturers use the same fine cut for related reasons: dispersion quality. ZhenAn supplies this powder milled from smelter-grade silicon in Anyang, Henan.

• Mill feed is selected silicon metal lump, crushed before fine grinding.
• Air classification after milling centers the distribution near the 45 μm mark.
• Iron pickup is controlled so the powder's own Fe ceiling stays credible.
• Lots are sampled at release for chemistry, sieve or laser PSD, and moisture.
• Packaging options run from 25 kg lined bags to 1 MT jumbos.

Write the specification in three layers. First the chemistry: grade 441 silicon (Si 99.1%, Fe ≤0.4%, Al ≤0.4%, Ca ≤0.1%) covers most PM and alloy work, while grade 3303 (Si 99.37%, Fe ≤0.3%, Al ≤0.3%, Ca ≤0.03%) serves parts where trace metals matter. Second the particle size: a 45 μm target expressed as sieve residue or D-values — for sintering parts, D50 near 45 μm with D90 under 75 μm is a workable envelope. Third the packaging: lined bags against moisture for press shops, jumbos for volume alloy lines.

1. Pressed and sintered silicon-containing structural parts.
2. Alloy manufacturing blends needing homogeneous silicon distribution.
3. Silicon nitride and SiC-based ceramic precursor mixes.
4. Metal injection molding feedstock formulations.
5. Industrial material systems that rely on fine elemental silicon.

1. Lock the grade against the finished part's impurity tolerance.
2. Define PSD — sieve residue or D10/D50/D90 — and let the lab confirm capability.
3. Match packing to the shop floor: small lined bags for presses, jumbos for blends.
4. Agree incoterm and port; FOB, CFR and CIF are all quotable.
5. Settle payment via L/C, T/T or Western Union.
6. Book the COA and any third-party inspection before dispatch.