Copper Powder
Electrolytic & atomised copper powder from UK stock. 99.5-99.9% purity, -100 to -325 mesh. TDS on request. 48hr UK dispatch. ISO 9001 & 14001 certified.
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. 48-hour UK dispatch available.
Product Range
Every grade held in UK stock and dispatched fast. 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 (Hymod) -150# E2B | Cu 98.5 min, Sn 0.5-1.2 | 2.9 - 3.5 | <106 |
| Irregular Copper Powder (Hymod) -200# | Cu 98.5 min, Sn 0.5-1.2 | 2.9 - 3.5 | <75 |
| Irregular Copper Powder (Hymod) -325# | Cu 98.5 min, Sn 0.5-1.2 | 3.0 - 3.6 | <45 |
* Stock item. Other grades made to order.
Industries Where Copper Powder Is Used
These powders are specified across demanding industrial sectors, from precision tooling to decorative coatings and additive manufacturing.
Technical Overview: Copper Powder
Our copper powders 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 produced 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. We welcome orders of any size, from samples through to production volumes, with no forced minimums. Sample quantities for qualification testing are also available. UK stock typically ships within 48 hours; custom blends and non-stock grades on quoted lead times. 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.
