Nickel-based
Nickel-based filler material is a brazing filler composed of nickel as the matrix, supplemented with low-melting-point elements (such as boron, silicon, phosphorus, etc.) and strengthening elements (such as chromium, cobalt, molybdenum, tungsten, iron, etc.)
Electrolytic copper powder
Features:
1. Ultra-high purity: Copper content ≥ 99.9%, with low impurity levels (compliant with GB/T 5246 standard). 2. Controllable morphology: Branching or spherical structures available, tailored to meet diverse process requirements. 3. Low oxygen content: Oxygen content ≤ 0.1%, delivering excellent oxidation resistance. Flexible particle size: Standard particle sizes range from 1 to 50 μm, with custom grading options supported.
Application:
Packing:
Aluminum foil bag, iron drum, plastic drum, woven bag, pallet, customized packaging
Date of delivery:
Precision grinding, intelligent manufacturing technology, integrated solutions
3-15 days
key word:
Electrolytic copper powder · Dendritic high-purity copper powder
Electrolytic production · High specific surface area · Specialized for powder metallurgy and oil‑impregnated bearings -300 mesh / -500 mesh / -600 mesh
Core Advantages of Electrolytic Copper Powder
Ultra-high purity
Copper content ≥ 99.8%; total impurities ≤ 0.2%; key impurities such as Fe, Pb, and Zn are controlled at the ppm level, ensuring excellent electrical conductivity and catalytic performance.
Dendritic morphology · High specific surface area
The unique dendritic structure produced by electrolysis exhibits a large specific surface area, high green‑body strength, and excellent sintering activity.
Low oxygen content
Oxygen content ≤ 0.1%; excellent oxidation resistance; resistant to oxidation during long-term storage, ensuring stable sintering and electrical conductivity.
Particle size is flexibly adjustable.
Standard particle sizes: -300 mesh, -500 mesh, and -600 mesh; D50 range: 1–50 μm; custom grading and narrow particle size distribution ranges are available.
Product Real-World Photos & Microscopic Morphology
SEM of dendritic electrolytic copper powder
Typical dendritic morphology, large specific surface area, and strong mechanical interlocking.
High-magnification dendritic structure
Fine dendrites are abundant, sintering activity is high, and green compact strength is excellent.
Real-life photos of the powder
Rose-red powder, vacuum-packed, with batch traceability.
Electrolytic copper powder: dendritic high-purity copper powder
Electrolytic copper powder is produced via an electrolytic refining process, in which current density and electrolyte composition are carefully controlled to yield a distinctive dendritic morphology. This morphology exhibits an exceptionally high specific surface area, strong mechanical interlocking between particles, and results in green compacts with high strength after pressing. Moreover, it demonstrates excellent sintering activity, enabling robust densification even at low temperatures. TIJO electrolytic copper powder has a copper content of ≥99.8%, an oxygen content of ≤0.1%, and impurities such as Fe, Pb, Zn, As, and Sb are maintained at extremely low levels (in compliance with GB/T 5246). Standard particle sizes include −300 mesh (≤48 μm), −500 mesh (≤25 μm), and −600 mesh (≤23 μm), making it suitable for applications such as oil‑impregnated bearings, copper‑based friction materials, diamond tools, carbon brushes, electrical contacts, and chemical catalysts. The product offers high batch-to-batch consistency and supports customized particle size specifications.
Chemical Composition (wt%, GB/T 5246 Standard)
| element | Cu (%) | Impurity content (ppm, not exceeding) |
|---|---|---|
| Indicator | ≥99.8 | — |
| Fe | — | 100 |
| Pb | — | 400 |
| Zn | — | 40 |
| As | — | 40 |
| Sb | — | 50 |
| Bi | — | 20 |
| Ni | — | 30 |
| Sn | — | 40 |
| S | — | 40 |
| Cl⁻ | — | 40 |
| H₂O | — | 400 |
| Nitrate-insoluble matter | — | 500 |
| Sum | — | 2000 |
* Oxygen content ≤ 0.1%, which can be further reduced by reduction treatment. All impurities comply with the GB/T 5246-2016 standard for electrolytic copper powder.
Key Particle Size Specifications & Physical Properties
| Particle size specification | Corresponding mesh count | D50 range (μm) | Loose packing density (g/cm³) | Tap density (g/cm³) | Flowability (s/50g) | Typical Applications |
|---|---|---|---|---|---|---|
| -300 mesh | ≤48μm | 20-45 | 1.8-2.5 | 2.5-3.5 | ≤35 | Oil-impregnated bearings, powder metallurgy structural components, diamond tools |
| -500 mesh | ≤25μm | 10-20 | 1.5-2.2 | 2.2-3.0 | ≤38 | Fine powder metallurgy, carbon brushes, conductive materials, catalysts |
| -600 mesh | ≤23μm | 8-15 | 1.4-2.0 | 2.0-2.8 | ≤40 | Ultrafine oil-impregnated bearings, friction materials, and high-specific-surface-area catalysts |
* The branched morphology results in a lower apparent density but higher green strength. Customization is available to meet customer requirements.
| Parameter item | Numerical value | Note |
|---|---|---|
| Density (theoretical) | 8.92 g/cm³ | The density of the sintered part can reach 8.5–8.8 g/cm³. |
| Melting point | 1083℃ | — |
| Boiling point | 2595℃ | — |
| Electrical conductivity (annealed state) | ≈58 MS/m (100% IACS) | Excellent electrical conductivity |
| Thermal conductivity (20°C) | ≈401 W/(m·K) | Excellent thermal conductivity |
Dendritic electrolytic copper powder vs. atomized spherical copper powder
| Performance Dimension | Dendritic Electrolytic Copper Powder (TIJO) | Atomized spherical copper powder |
|---|---|---|
| Appearance | Branch-like/irregular, with a large specific surface area | Spherical, with a smooth surface |
| Loose packing density | Lower (1.5–2.5 g/cm³) | High (3.0–4.5 g/cm³) |
| Green compact strength | High (mechanical interlock) | Low |
| Sintering activity | High | Medium |
| Forming pressure | Low, easy to suppress | Requires higher pressure |
| Recommended Apps | Powder metallurgy, oil-impregnated bearings, friction materials | Conductive pastes, 3D printing, thermal spraying |
Dendritic electrolytic copper powder exhibits unique advantages in compaction and sintering densification, making it the preferred choice of copper powder for conventional powder metallurgy processes.
Process Recommendations and Parameters
| Craftsmanship | Recommended particle size | Key parameters | Typical Product Performance |
|---|---|---|---|
| Oil-impregnated bearing, pressed and sintered | -300 mesh | Pressing pressure: 200–350 MPa; sintering at 800–900°C in a reducing atmosphere. | Oil content: 18–22%; crush strength: ≥200 MPa. |
| Diamond tools | -300 mesh / -500 mesh | Mixed with diamond and a binder, then hot-pressed and sintered. | Tire body hardness: HRB 80–100; high flexural strength. |
| Powder Metallurgy Structural Components | -300 mesh | Press at 400–600 MPa, sinter at 850–950°C. | Density ≥ 7.8 g/cm³, excellent electrical conductivity |
TIJO provides process‑technology support and sample testing, helping customers achieve stable production quickly.
Typical application areas
Powder metallurgy
Oil-impregnated bearings, copper-based friction materials, electrical contacts, carbon brushes, and powder metallurgy structural components
Diamond tools
Diamond cutter heads, grinding wheels, wire saws, and drill bit matrix materials
Chemical catalysis
Catalyst support, methanol synthesis catalyst, chemical reaction additive
Electronics industry
Conductive pastes, electromagnetic shielding materials, and conductive adhesive fillers
Automotive industry
Brake pads, clutch discs, friction-reducing materials
Thermal management
Thermal conductive filler, heat-dissipating coating
End-to-end testing capability
Each batch of electrolytic copper powder is tested for copper content, key impurities, particle size distribution, oxygen content, and tapped/loose bulk density. A Certificate of Analysis (COA) is provided, in compliance with the GB/T 5246 standard.
Packaging & Delivery
Powder packaging
Double-layer aluminum foil bag, vacuum-sealed + iron drum/plastic drum
Specifications: 1 kg, 5 kg, 20 kg, 50 kg
Delivery time
In stock and ready to ship; dispatch within 2–5 days after order confirmation.
Custom particle size or special grading: 7–12 days
Batch Traceability
Sample retained for each batch; COA report shipped with the goods.
Quality documents are available.
Free sample
Samples are provided for verification in powder metallurgy, oil-impregnated bearings, and diamond tools.
Customized Services
Grain size customization
Technical Support
Provide advice
Assist customers in resolving issues.
Chemical composition（wt%）
Grade | Chemical composition | ||||||||||||||
< | > | ||||||||||||||
FTD2 | Cu | Fe | Pb | Zn | As | Sb | Bi | Ni | Sn | O | S | Cl | H 2 O | Nitrate-insoluble matter | Impurities Sum |
99.8 | 0.01 | 0.04 | 0.004 | 0.004 | 0.005 | 0.002 | 0.003 | 0.004 | 0.10 | 0.004 | 0.004 | 0.04 | 0.05 | 0.2 | |
Physical indicators
Application areas
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Address: No.39, Liandong Yougu lnd. Park, Bachelor Street,Changsha City,Hunan Province, China.
