High Strength Cold Rolled Copper Sheet 0.1mm-200mm HRB 50-85 For Industrial Connectors
Cold Rolled Copper Alloy Sheet HRB 50-85 UL Certified Industrial Connectors
Cold Rolled Copper Alloy Sheets are engineered for high-performance industrial connectors requiring superior strength, excellent conductivity, and UL-certified safety. With a hardness range of HRB 50–85 and compliance with UL 310, ASTM B152, and RoHS standards, these sheets are ideal for electrical terminals, switchgear components, and automotive connectors. Available in thicknesses from 0.2mm to 6mm, they combine durability with precision for demanding applications.
Key Advantages:
- High Strength-to-Conductivity Ratio: HRB 50–85 hardness with 80% IACS conductivity for reliable power transmission.
- Cold Rolled Precision: Tight thickness tolerances (±0.01mm) and smooth surface finish (Ra ≤0.8µm).
- Corrosion Resistance: Resists oxidation and sulfidation in harsh environments (ISO 9227 tested).
- UL Certification: Compliant with UL 310 for electrical safety in connectors and terminals.
- Custom Solutions: Pre-cut blanks, perforated designs, and selective plating (tin/nickel).
- Global Compliance: RoHS, REACH, and IATF 16949 (automotive-grade).
2. Technical Specifications
| Parameter | Details |
|---|---|
| Material | C19020 (CuNi2Si) – Cu ≥97.5%, Ni: 1.5–2.5%, Si: 0.5–0.8%, Fe ≤0.2% |
| Hardness (HRB) | 50–85 (adjustable via cold rolling/annealing) |
| Thickness Range | 0.2–6.0mm (±0.01mm for ≤1mm, ±0.02mm for >1mm) |
| Electrical Conductivity | 46 MS/m (80% IACS) at 20°C |
| Tensile Strength | 400–650 MPa (annealed to hard temper) |
| Surface Finish | Cold-rolled (Ra ≤0.8µm), polished (Ra ≤0.4µm), or chromate conversion coated |
| Certifications | UL 310, ASTM B152, IATF 16949, RoHS, REACH, ISO 9001:2015 |
| Key Applications | High-voltage terminals, automotive fuse clips, and industrial relay contacts |
3. Why Import Our Cold Rolled Copper Sheets?
Competitive Benefits:
- Cost Savings: 25–35% lower pricing than North American/European suppliers with UL 310 compliance.
- Fast Delivery: 7-day lead time for custom orders + air freight (DHL/FedEx) to global hubs.
- Quality Assurance: 100% Rockwell hardness testing + UL audit-ready certification reports.
- Custom Fabrication: Precision-stamped connector blanks, embossed logos, and bend-test certifications.
- Global Logistics: Pre-stocked in Chicago, Shanghai, and Frankfurt for 48-hour regional dispatch.
- Technical Support: Free connector design templates, ECAD models, and UL compliance guidelines.
- Warranty: 5-year performance warranty + 30-day returns for quality discrepancies.
4. High-Demand Industrial Applications
| Industry | Use Cases |
|---|---|
| Automotive Electronics | EV charging gun terminals, battery management system (BMS) connectors. |
| Energy & Utilities | Circuit breaker contacts, smart meter terminals, and transformer lugs. |
| Telecom Infrastructure | 5G base station RF connectors, fiber-optic splice closures. |
| Industrial Automation | PLC terminal blocks, robotic arm power connectors, and motor starters. |
| Consumer Electronics | Smartphone charging port springs, laptop power jacks. |
| Aerospace | Avionics module connectors, satellite signal terminals. |
| Renewable Energy | Solar inverter busbars, wind turbine junction boxes. |
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 Alloy Sheet,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
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.