ASTM B187 Copper Round Rod - High Conductivity 99.9% Pure Bars Custom Lengths
ASTM B187 Copper Round Rods are crafted from 99.9% pure electrolytic copper, delivering unmatched electrical and thermal conductivity for critical applications in power transmission, renewable energy, and precision engineering. Compliant with ASTM B187, EN 13602, and JIS H3250 standards, these rods are available in custom lengths (100mm–6m) and diameters from 5mm to 200mm, ensuring versatility for OEMs and contractors.
Key Advantages:
- Ultra-High Purity: Cu ≥99.9%, oxygen ≤0.04% (ASTM B187) for minimal resistance and optimal performance.
- Superior Conductivity: 101% IACS (International Annealed Copper Standard) at 20°C.
- Precision Machinability: Tight tolerances (±0.03mm for ≤50mm, ±0.1% for >50mm) for CNC and lathe work.
- Corrosion Resistance: Anti-oxidation surface treatment for harsh environments.
- Global Compliance: RoHS, REACH, and ISO 9001-certified production.
- Custom Solutions: Cut-to-length, polished/brushed finishes, and bulk packaging.
2. Technical Specifications
| Parameter | Details |
| Material | C11000 (ETP Copper) – Cu ≥99.9%, O ≤0.04%, impurities (Pb/Fe/S) ≤0.05% |
| Standards | ASTM B187, EN 13602 (CW004A), JIS H3250 (C1100), GB/T 4423-2007 |
| Diameter Range | 5mm–200mm (±0.03mm to ±0.1%) |
| Length Options | 100mm–6,000mm (custom cuts ±1mm tolerance) |
| Mechanical Properties | Tensile Strength: 210–370 MPa, Hardness: 45–110 HV, Elongation: 12–50% |
| Electrical Conductivity | 58.0–58.6 MS/m (101% IACS) at 20°C |
| Thermal Conductivity | 385–401 W/m·K at 20°C |
| Surface Finish | Mill finish (Ra ≤1.6µm), polished (Ra ≤0.4µm), or anti-tarnish coated |
| Certifications | RoHS, REACH, ISO 9001:2015, Conflict Minerals (RMAP), TÜV SÜD |
| Key Applications | Power grid busbars, EV battery terminals, transformer coils, and heat sinks |
3. Why Source Our ASTM B187 Copper Rods?
Competitive Benefits:
- Cost Efficiency: 25–35% lower than EU/US suppliers with volume discounts (500kg+ orders).
- Fast Turnaround: 5–10 days for custom lengths + global air/sea logistics (DDP/DAP terms).
- Quality Assurance: 100% ultrasonic testing for internal defects + material traceability reports.
- Customization: Laser etching, chamfered edges, and vacuum-sealed packaging for OEMs.
- Sustainability: Ethically sourced copper (RMI-certified) + carbon-neutral shipping (ISO 14064).
- Technical Support: Free conductivity test certificates, CAD files, and welding guidelines.
- Warranty: 24-month quality guarantee + 30-day returns for non-conformance.
4. High-Performance Applications
| Industry | Use Cases |
| Energy & Utilities | High-voltage transmission lines, substation grounding rods, and smart grid connectors. |
| Electric Vehicles | EV charging gun contacts, lithium-ion battery terminals, and inverter busbars. |
| Renewable Energy | Solar farm junction boxes, wind turbine slip rings, and hydroelectric generator shafts. |
| Aerospace | Aircraft electrical harnesses, satellite RF connectors, and avionics heat exchangers. |
| Telecommunications | 5G base station waveguides, fiber-optic grounding systems, and data center busways. |
| Industrial Automation | Robotics power rails, CNC machining electrodes, and welding torch tips. |
| Medical Devices | MRI magnet coils, surgical tool conductors, and defibrillator components. |
FAQ
1. Who are we?
Our headquarters is located in Jiangsu, China. Since 2010, we have sold to the domestic market (30.00%), North America (10.00%), South America (10.00%), Southeast Asia (10.00%), South Asia (10.00%), and Africa (5.00%) , Middle East (5.00%), Central America (5.00%), Northern Europe (5.00%), Oceania (3.00%), Western Europe (3.00%), Southern Europe (2.00%), Eastern Europe (00.00%), East Asia (00.00%) . There are approximately 11-50 people in our office in total.
2. How do we ensure quality?
There are always pre-production samples before mass production;
Always conduct final inspection before shipment;
3. What can you buy from us?
Copper Round Rod, stainless steel pipe, stainless steel coil, stainless steel strip, wear-resistant plate, galvanized steel plate
4. Why should you buy from us instead of other suppliers?
The company introduces advanced technology and equipment, and its products are exported to Western countries such as the United Kingdom and the United States. It has strong technical force and experienced technical and management personnel.
5. What services can we provide?
Accepted delivery terms: FOB, CFR, CIF, EXW;
Accepted payment currencies: USD;
Accepted payment methods: T/T, L/C, cash;
Languages spoken: English, Chinese
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ASTM B187 Copper Round Rod High Conductivity 99.9% Pure Copper Rod Images
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