AlSi12 (4047) Powder (Al-Si12)
Near-eutectic composition gives excellent castability/flow for thin-wall AM parts. Small quantities, prototypes and custom made-to-order specifications are welcome.
0–150µmParticle Size Range
Si 11–13%Composition
Custom Made-to-OrderGrade & Quantity
WorldwideExport Shipping
AlSi12 (4047) Powder — Grades & Specifications
Near-eutectic composition gives excellent castability/flow for thin-wall AM parts. The options below are typical; specify your target values in the request form and we will confirm availability, lead time and pricing.
| Material | AlSi12 (4047) Powder |
|---|---|
| Chemical formula / alloy designation | Al-Si12 |
| CAS number | Alloy — no single CAS number (Al base; Si per 4047 spec) |
| Particle size | 0–45 / 15–53 / 20–63 / 53–150µm graded cuts |
| Composition | Si 11–13%, Fe ≤0.8%, Cu ≤0.3%, Mn ≤0.15%, Mg ≤0.1%, Zn ≤0.2%, Al balance; O₂ 800–1500ppm, bulk density 1.3–1.4g/cm³, angle of repose ≤45° |
| Morphology | Spherical, gas-atomized (near-eutectic composition, excellent flowability) |
| Appearance | Silver-gray metallic powder |
| Typical applications | Thin-Wall AM Parts, Brazing Filler, Heat Exchangers |
Applications by Industry
Thin-Wall AM PartsNear-eutectic composition gives excellent castability/flow for thin-wall AM parts.
Brazing FillerStandard Al-Si braze-alloy composition for aluminum brazing.
Heat ExchangersGood flow and low-shrinkage casting/AM characteristics for heat-exchanger parts.
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 (e.g. ≥99.95%)
- Particle size / target (µm, or mesh)
- 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 / grade options are available for AlSi12 (4047) Powder?
AlSi12 (4047) Powder is offered in the grades listed on this page (Si 11–13%, Fe ≤0.8%, Cu ≤0.3%, Mn ≤0.15%, Mg ≤0.1%, Zn ≤0.2%, Al balance; O₂ 800–1500ppm, bulk density 1.3–1.4g/cm³, angle of repose ≤45°). Other grades can be reviewed on request depending on your application and quantity.
What particle sizes can you supply for AlSi12 (4047) Powder?
The typical size range supplied is 0–45 / 15–53 / 20–63 / 53–150µm graded cuts. Please specify your target value in the request form and we will confirm availability.
Can AlSi12 (4047) Powder be made to custom specifications?
Yes. AlSi12 (4047) Powder can be produced to order — grade, particle size and packaging can be customized to your specification. Select "Custom Order" in the request form and provide your target values.
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 AlSi12 (4047) 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 can be provided on request for supplied lots.
Related Products
Request a Quote for AlSi12 (4047) 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.