Copper Powder
Copper powder from UK stock in Rochdale: electrolytic (dendritic), spherical and irregular grades. Stock grades dispatched within 48 hours. Orders from 1 kg, samples from 250 g.
Ronald Britton supplies high-purity copper powder in electrolytic and gas-atomised grades from UK stock. Available in mesh sizes from -100 to -325 mesh with purities of 99.5% to 99.9% Cu. Applications include diamond tool bonding, conductive coatings, brazing pastes, thermal spray and powder metallurgy. ISO 9001 and ISO 14001 certified. Stock grades dispatched within 48 hours.
Product Range
Stock grades are marked in the table and are dispatched within 48 hours. Other grades are made to order. Contact us for a current quotation.
CU-ED Electrolytic Dendritic Copper Powder
CU-AT Atomised Spherical Copper Powder
Grades & Specifications
| Description | Composition (%) | App. Density (g/cc) | Size (µm) |
|---|---|---|---|
| Dendritic Copper Powder -100# STD | Cu 99.0 min | 2.6 - 2.7 | <150 |
| *Dendritic Copper Powder -300# SFP2 | Cu 99.0 min | 1.95 - 2.20 | <53 |
| Dendritic Copper Powder -300# SFP3 | Cu 99.0 min | 1.3 - 1.7 | <53 |
| Dendritic Copper Powder -240# SFP8 | Cu 99.0 min | 0.95 - 1.10 | <63 |
| Dendritic Copper Powder -300# SFP10 | Cu 99.0 min | 0.65 - 0.90 | <53 |
| Spherical Copper Powder -100# | Cu 99.0 min | 4.5 - 5.5 | <150 |
| *Spherical Copper Powder -300# | Cu 99.0 min | 4.5 - 5.5 | <53 |
| Spherical Copper Powder -25µm | Cu 99.0 min | 4.0 - 5.5 | <25 |
| Spherical Copper Powder 25-45µm | Cu 99.0 min | 4.0 - 5.5 | 25 - 45 |
| *Spherical Copper Powder 400-630µm | Cu 99.0 min | 4.5 - 5.5 | 400 - 630 |
| Spherical Copper Powder 52/100# | Cu 99.0 min | 4.5 - 5.5 | 150 - 300 |
| Spherical Copper Powder 150/300# | Cu 99.0 min | 4.5 - 5.5 | 53 - 106 |
| Irregular Copper Powder -100# | Cu >99.0 | 2.5 - 3.5 | <150 |
| Irregular Copper Powder -200# | Cu >99.0 | 2.9 - 3.5 | <75 |
| *Irregular Copper Powder -325# | Cu >99.0 | 3.0 - 3.6 | <45 |
| Irregular Copper Powder -150# E2B | Cu 98.5 min, Sn 0.5-1.2 | 2.9 - 3.5 | <106 |
| Irregular Copper Powder -200# | Cu 98.5 min, Sn 0.5-1.2 | 2.9 - 3.5 | <75 |
| Irregular Copper Powder -325# | Cu 98.5 min, Sn 0.5-1.2 | 3.0 - 3.6 | <45 |
* Stock item. Other grades made to order. Pricing is commodity-linked, contact us for a current quotation.
Ordering Copper Powder
Grades held in UK stock in Rochdale are marked with a star in the table above.
Stock grades are dispatched within 48 hours. Other grades and large orders are given a confirmed date when you order.
From 1 kg to full pallet loads. Samples and trial quantities from 250 g.
Any pack size. We repack from 25 kg into 5 kg, 1 kg or the size you need.
The certificate of analysis for your batch comes with every dispatch. Technical and safety data sheets on request, with safety data sheets in other languages.
More than 20 countries, with full export paperwork.
Pricing is commodity-linked. Send us the grade, size and quantity for a current quotation.
Industries Where Copper Powder Is Used
These powders are specified across demanding industrial sectors, from precision tooling to decorative coatings and additive manufacturing.
The Complete Guide to Industrial Metal Powders
How metal powders are produced, what particle shape and mesh size mean, how to specify a powder for your process, and what to look for in a TDS and a supplier.
Read the guideTechnical Overview: Copper Powder
The copper powders we supply are produced by two principal methods: electrolytic deposition (producing irregular, dendritic particles ideal for diamond tooling and pressed parts) and gas atomisation (producing spherical particles for thermal spray, cold spray and additive manufacturing).
Purity ranges from 99.5% to 99.9% Cu, with apparent densities of 2.0–4.8 g/cm³ depending on morphology. All grades are characterised by particle size distribution, apparent density, flow rate (where applicable) and hydrogen loss.
| Property | Electrolytic | Atomised |
|---|---|---|
| Morphology | Dendritic / irregular | Spherical |
| Typical Purity | 99.5 – 99.7% | 99.7 – 99.9% |
| Apparent Density | 1.2 – 2.8 g/cm³ | 4.0 – 4.8 g/cm³ |
| Flowability | Non-flowing | Free-flowing |
| Compressibility | Excellent | Good |
| Green Strength | High | Moderate |
| Mesh Sizes | -100 to -325 | -100 to -325 |
| Best For | PM parts, diamond tools | Spray, AM, coatings |
Questions & Answers
What is copper powder used for?
Copper powder is used in diamond tool bond matrices, conductive pastes, thermal spray coatings, cold spray restoration, additive manufacturing, brazing alloy formulation, powder metallurgy pressed parts, and EMI shielding. Ronald Britton supplies electrolytic dendritic and gas-atomised spherical copper powder grades for all of these applications.
What is the difference between electrolytic and atomised copper powder?
Electrolytic copper powder (CU-ED) is produced by electrodeposition and has a dendritic, tree-like morphology with excellent green strength and compressibility for pressed parts. Atomised copper powder (CU-AT) is produced by gas atomisation and has spherical morphology with excellent flowability for thermal spray, cold spray and additive manufacturing.
What mesh sizes of copper powder are available?
Standard mesh sizes are -100, -200 and -325 mesh, with -400 mesh available on request. For additive manufacturing, gas-atomised grades are supplied in 15-45µm and 45-90µm size ranges. Custom mesh ranges and PSDs can be supplied to specification.
What purity grades of copper powder do you supply?
Standard purity is 99.5% Cu minimum for electrolytic grades (CU-ED) and 99.9% Cu minimum for atomised grades (CU-AT). Higher purity grades are available on request. All grades come with full chemical analysis and batch traceability documentation.
What copper powder is best for diamond tool manufacturing?
For diamond tool bond matrices, electrolytic dendritic copper powder (CU-ED) is the industry standard. The dendritic morphology provides high green strength during pressing and uniform sintering behaviour. Mesh sizes of -200 to -325 are typically specified, with the SFP grade range allowing apparent density tuning from 0.65 to 2.7 g/cm³ to match each manufacturer's segment formulation.
Can I order small quantities of copper powder?
Yes. From 1 kg. Samples and trial quantities from 250 g. We welcome orders through to production volumes. Stock grades are dispatched within 48 hours; other grades are given a confirmed date when you order. Contact our team for a quotation tailored to your application.
Need Copper Powder
to Your Specification?
Tell us the grade, mesh size and quantity. We'll respond with a quotation, usually within one business day.
