Thorium Powder
Thorium powder (Th) supplied in 99% · 99.9% grades, micron range, in irregular / granular form. Used for aerospace alloys, nuclear fuel research, welding electrode alloys, catalysts. Small quantities, prototypes and custom made-to-order specifications are welcome.
99–99.9%Purity Grades
MicronParticle Size Range
Custom Made-to-OrderGrade, Size & Quantity
WorldwideExport Shipping
Thorium Powder — Grades & Specifications
Thorium (Th) 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 | Thorium |
|---|---|
| Element symbol | Th |
| CAS number | 7440-29-1 |
| Purity grades | 99% · 99.9% (higher on request) |
| Particle size | Micron range; target D50 specified per order |
| Morphology | Irregular / granular |
| Appearance | Grey powder |
| Typical applications | Aerospace alloys, nuclear fuel research, welding electrode alloys, catalysts |
Applications by Industry
Aerospace alloysHistorical high-temperature alloy additive.
Nuclear fuel researchFeedstock for thorium fuel cycle research applications.
Welding electrode alloysHistorical additive for tungsten welding electrodes.
CatalystsCatalyst component for specialty chemical processing.
High-temperature applicationsFeedstock for refractory and high-temperature research.
Research & developmentFeedstock for nuclear and materials research institutions.
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. Thorium is a regulated, low-level radioactive material; supply is subject to applicable radioactive-material and export-control regulations, with documentation 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 thorium powder are available?
Thorium powder is offered in 99% · 99.9% (higher on request) purity. 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 thorium powder be made to custom specifications?
Yes. Thorium 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 thorium 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.
Related Products
Request a Quote for Thorium 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.