Silicon Powder

Silicon powder (Si) supplied in 98.5% · 99% · 99.99% grades, micron range, in angular / irregular form. Used for aluminium alloying, solar cells, semiconductor processing, battery anode materials. Small quantities, prototypes and custom made-to-order specifications are welcome.

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98.5–99.99%Purity Grades

MicronParticle Size Range

Custom Made-to-OrderGrade, Size & Quantity

WorldwideExport Shipping

Silicon Powder — Grades & Specifications

Silicon (Si) powder is supplied across a range of grades, particle sizes and morphologies. The options below are typical; specify your target values in the request form and we will confirm availability, lead time and pricing.

Material	Silicon
Element symbol	Si
CAS number	7440-21-3
Purity grades	98.5% · 99% · 99.99% (metallurgical to high-purity grades)
Particle size	Micron range; target D50 specified per order
Morphology	Angular / irregular
Appearance	Grey-black powder
Typical applications	Aluminium alloying, solar cells, semiconductor processing, battery anode materials

Applications by Industry

Aluminium alloyingAl-Si alloy feedstock for casting and automotive components.

Solar cellsFeedstock for photovoltaic cell manufacturing.

Semiconductor processingHigh-purity feedstock for semiconductor device manufacturing.

Battery materialsAnode material feedstock for next-generation lithium-ion batteries.

Chemical synthesisFeedstock for silicone and silane compound production.

RefractoriesRaw material for silicon-based refractory products.

Particle Size & Mesh Conversion

Reference for converting between US mesh and microns/millimetres. Figures are nominal sieve openings and may vary slightly by standard.

Mesh (US)	Micron (µm)	mm	Inch	Remarks
3	6730	6.730	0.2650
4	4760	4.760	0.1870
5	4000	4.000	0.1570
6	3360	3.360	0.1320
7	2830	2.830	0.1110
8	2380	2.380	0.0937
10	2000	2.000	0.0787
12	1680	1.680	0.0661
14	1410	1.410	0.0555
16	1190	1.190	0.0469
18	1000	1.000	0.0394
20	841	0.841	0.0331
25	707	0.707	0.0278
30	595	0.595	0.0234
35	500	0.500	0.0197
40	420	0.420	0.0165
45	354	0.354	0.0138
50	297	0.297	0.0117
60	250	0.250	0.0098
70	210	0.210	0.0083
80	177	0.177	0.0070
100	149	0.149	0.0059
120	125	0.125	0.0049
140	105	0.105	0.0041
—	100	0.100	0.0039	Sand
170	88	0.088	0.0035
200	74	0.074	0.0029
—	70	0.070	0.0027
230	63	0.063	0.0024	Human hair
—	55	0.055	0.00217
270	53	0.053	0.0021
—	50	0.050	0.00197
325	44	0.044	0.0017
—	40	0.040	0.00157
400	37	0.037	0.0015
550	25	0.025	0.00099
625	20	0.020	0.00079
1200	12	0.012	0.0005
1250	10	0.010	0.000394
—	7	0.007	0.000276
2500	5	0.005	0.000197
4800	3	0.003	0.000118
5000	2.5	0.0025	0.000099	Bacteria (approx.)
12000	1	0.001	0.0000394

Information Required for Quotation

Grade / purity
Particle size / target D50 (micron, nano, or mesh)
Morphology
Quantity
Application environment
Required delivery country

Lead time depends on grade, particle size, quantity and processing requirements. Export availability can be reviewed based on destination country and material type. A Certificate of Analysis can be provided on request.

Request a Quote or Custom Order

Tell us your grade, particle size and quantity. We typically reply within one business day.

Frequently Asked Questions

What purity grades of silicon powder are available?

Silicon powder is offered in 98.5% · 99% · 99.99% (metallurgical to high-purity grades). Other grades can be reviewed on request depending on your application and quantity.

What particle sizes can you supply?

Particle sizes are supplied in the micron range, with the target D50 specified per order. Mesh-based requirements are also accepted; a mesh-to-micron conversion reference is provided on the page.

Can silicon powder be made to custom specifications?

Yes. Silicon powder is produced to order — grade, particle size, morphology and packaging can be customized to your specification. Please provide your target values in the request form.

What is the minimum order quantity (MOQ)?

Order quantity is flexible and small quantities and prototype requests are welcome. Please state your required quantity in the form for an accurate quotation.

Can you export and ship silicon powder internationally?

Yes, export inquiries are welcome. Availability and shipping are reviewed based on destination country, grade and quantity.

Do you provide a Certificate of Analysis (COA) or technical data?

A Certificate of Analysis and technical data (purity, particle size distribution) can be provided on request for supplied lots.

Request a Quote for Silicon Powder

Send us your grade, particle size, quantity and application. We will review availability, quotation and lead time. Small quantities, prototypes and custom made-to-order specifications are welcome.

Request a Quote