C17500 Beryllium Cobalt Copper Strip Coil
Grade Equivalents: UNS C17500 / CuCo2Be / DIN 2.1285 / EN CW104C / RWMA Class 3
Application Focus: High-Conductivity Electronic Springs, Resistance Welding Components, Fuse Clips, & Switch Parts
Executive Standards: ASTM B534, SAE J461/J463, EN 1652 Specifications
Size Range: Thickness 0.05mm - 3.0mm, Width up to 300mm, Precision Slit Coils & Strips
Temper Condition: Solution Heat-Treated (TB00), Cold-Rolled (TD02/TD04), or Precipitation Hardened (TF00/TH04 per ASTM B534)
Core Purpose: High Electrical & Thermal Conductivity Combined with Good Mechanical Strength & Softening Resistance
Quality Assurance: ISO9001:2015, RoHS Compliant, MTC 3.1 Certified
Description
C17500 Beryllium Cobalt Copper Strip Coil — High-Conductivity Precision Alloy for Electrical & Welding Applications
C17500 Beryllium Cobalt Copper Strip Coil is a heat-treatable CuCo2Be alloy that balances mechanical strength and electrical conductivity. Manufactured per ASTM B534 and RWMA Class 3 standards, it reaches 680–850 MPa tensile strength and 45–60% IACS conductivity, filling the performance gap between common beryllium copper and pure copper. With 25+ years of manufacturing experience, our factory supplies strip coils in 0.05–3.0mm thickness and up to 300mm width for electrical and welding industry use.
What Makes C17500 Different from Standard Beryllium Copper?
Conventional C17200 beryllium copper focuses on mechanical strength but lacks stable conductivity under high-temperature working conditions. C17500 Beryllium Cobalt Copper Strip Coil adopts cobalt as the main alloying element, forming stable internal microstructure. It maintains complete structural stability at continuous working temperature up to 500°C, delivering more stable comprehensive performance than standard beryllium copper grades.
Chemical Composition & Grade Equivalents
| Property | Value |
|---|---|
| Grade / UNS | C17500 |
| DIN Equivalent | 2.1285 |
| EN Designation | CW104C / CuCo2Be |
| RWMA Classification | Class 3 |
| Beryllium (Be) Content | 0.40 – 0.70% |
| Cobalt (Co) Content | 2.40 – 2.70% |
| Iron (Fe) Max | 0.10% |
| Balance | Copper (Cu) |
Full Technical Specifications
| Parameter | Value |
|---|---|
| Executive Standard | ASTM B534, SAE J461/J463, EN 1652 |
| Thickness Range | 0.05 mm – 3.0 mm |
| Width Range | Up to 300 mm |
| Temper Conditions | TB00 / TD02 / TD04 / TF00 / TH04 |
| Tensile Strength (Aged) | 680 – 850 MPa |
| Yield Strength | 550 – 700 MPa |
| Hardness (Aged) | 90 – 100 HRB / 220 – 250 HB |
| Electrical Conductivity | 45 – 60% IACS |
| Thermal Conductivity | 200 – 240 W/m·K |
| Softening Temperature | ≥ 500 °C |
| Quality Certification | ISO 9001:2015, RoHS, REACH, MTC 3.1 |
Key Performance Advantages
This alloy features higher electric and thermal efficiency than ordinary beryllium copper, lowering heat accumulation for welding and battery components. Cobalt alloy structure improves high-temperature softening resistance for long-term continuous operation. Multiple temper options support stamping and secondary aging treatment, meeting different processing needs. It also resists stress relaxation, keeping stable clamping force for long-cycle electronic connection applications.
Application Scenarios
It applies to RWMA Class 3 standard resistance welding parts, including welding electrodes and dies. Suitable for mass production of electronic springs, fuse clips and micro-switch parts via high-speed stamping. It works for EV battery terminals to reduce operating heat, and precision mold inserts to speed up molding cooling cycles.
Quality Control Process
We implement three-stage inspection including raw material composition verification, in-process heat treatment monitoring and finished product dimensional & performance testing. All batches pass conductivity, hardness and tensile tests, with EN 10204 3.1 test reports provided for each shipment.
Packaging & Delivery
Precision slit coils adopt moisture-proof packaging for global shipping. Regular tempers are in stock for 3–5 days delivery, and customized heat treatment takes 1–2 weeks. We provide 24-hour quotation service for all inquiries.
Frequently Asked Questions
Q1: What is the difference between C17500 and C17510?
A1: C17500 takes cobalt as the main alloying element with stable high-temperature performance, suitable for standard RWMA Class 3 industrial applications.
Q2: Can C17500 be welded and brazed?
A2: Yes. Conventional welding and brazing processes are applicable. Post-weld heat treatment is recommended to restore material performance.
Q3: Why choose coil type instead of flat sheet?
A3: Coil materials support continuous high-speed stamping, cutting production scrap and labor cost for mass component manufacturing.
Q4: Is C17500 compliant with environmental standards?
A4: Finished solid products meet RoHS and REACH requirements. Dust prevention measures are required during grinding and machining.
Q5: What temper is suitable for spring production?
A5: Adopt TB00 temper for forming, then perform TF00 aging treatment to obtain stable hardness and dimensional accuracy.
Contact Us
Send your dimensional parameters and technical demands tojs01@jstongcai.com.cn. Our team will offer professional technical evaluation and quick quotes within 24 hours, providing tailored C17500 Beryllium Cobalt Copper Strip Coil solutions for your industrial projects.
