C17500 Beryllium Cobalt Copper Sheet
Grade Equivalents: DIN 2.1285 / EN CW104C / UNS C17500 / RWMA Class 3 / Alloy 10
Application Focus: High-Conductivity Mold Plates, Resistance Welding Dies, Platens, & Busbars
Executive Standards: ASTM B534, RWMA Class 3, ISO 5182, EN 12163
Size Range: Thickness 10 mm – 200 mm, Custom Width and Length Sawn / Precision Ground
Temper Condition: Solution Heat-Treated & Age-Hardened (TF00 / AT) for Optimum Stability
Core Purpose: Superior Thermal/Electrical Performance Combined with Elevated-Temperature Strength
Quality Assurance: ISO 9001:2015, RoHS Compliant, EN 10204 3.1 Mill Test Certificate
Description
C17500 Beryllium Cobalt Copper Sheet | CuCo2Be Plate for High-Conductivity Welding & Mold Applications
C17500 Beryllium Cobalt Copper Sheet is a precipitation hardened copper alloy that meets RWMA Class 3 and is appropriate for industrial applications involving long term thermal and mechanical stress. It has 45-60% IACS conductivity, 200-240 W/m.K thermal conductivity and 690-900 MPa tensile strength with 2.40-2.70% cobalt and 0.40-0.70% beryllium composition. Dongguan Jiaye Dingsheng Precision Casting & Forging Co., Ltd. was founded in 1997, and produces plates with thickness ranging from 10mm to 200mm.
All goods are in accordance with ASTM B534, EN CW104C and ISO 5182, and full EN 10204 3.1 test certifications are given with each batch.
What Makes CuCo2Be Different from Other Copper Alloys?
In most typical copper alloys, conductivity and strength are trade-offs in performance. This constraint is overcome by the CuCo2Be Plate by forming a stable precipitation structure after the ageing process.
Its softening temperature is as high as 500-550°C, substantially greater than that of normal C17200 beryllium copper. The material balances the conductive and heat dissipation performance of the pure copper with the mechanical stability of the tool alloy, suiting the multi-condition operating needs of current transmission, heat removal and cyclic mechanical stress.
Technical Specifications
| Property | Value |
|---|---|
| Grade / Standard | UNS C17500 / DIN 2.1285 / EN CW104C / RWMA Class 3 |
| Executive Standard | ASTM B534, ISO 5182, EN 12163 |
| Chemical Composition – Co | 2.40 – 2.70% |
| Chemical Composition – Be | 0.40 – 0.70% |
| Chemical Composition – Cu | Balance |
| Temper Condition | TF00 / AT (Solution Treated & Age-Hardened) |
| Tensile Strength | 690 – 900 MPa |
| Yield Strength | 550 – 750 MPa |
| Hardness (Aged) | 92 – 100 HRB / 200 – 250 HV |
| Electrical Conductivity | 45 – 60% IACS |
| Thermal Conductivity | 200 – 240 W/m·K |
| Softening Temperature | Up to 500 – 550 °C |
| Thickness Range | 10 mm – 200 mm |
| Width / Length | Custom sawn or precision ground |
| Quality Documentation | EN 10204 3.1 Mill Test Certificate |
| Compliance | ISO 9001, RoHS, REACH |
Key Performance Advantages
- Stable conductive and thermal performance: Higher conductivity and heat dissipation efficiency than C17200, significantly stabilising welding cycle efficiency and prolonging electrode service life.
- High temperature stability: High temperature cycles without deformation, maintains full hardness and structural size.
- Constant mechanical properties: Suitable for industrial use with large load, resistant to fatigue and damage in the long-term clamping pressure.
- Standard and ready to use: Meets RWMA Class 3 standard for welding equipment, with full ageing treatment for immediate processing and use.
Primary Application Areas
- Resistance Welding: Modification of flash welding jaws and seam welding wheels suitable for high pressure, high current and high-temperature operating for stainless steel and high-resistance alloy welding.
- Injection & Blow Moulding: Used on mould inserts and core pins to speed up the heat removal from the moulds, reduce manufacturing cycles and prevent C17500 Beryllium Cobalt Copper Sheet warping.
- High-Load Switchgear: Stable current transmission under vibration and high load for connection parts and contact springs in high-voltage applications.
Certificate
Quality Control Process
All plates adopt five-stage full inspection before delivery: OES chemical composition detection, eddy current conductivity testing, Rockwell hardness verification, metallographic grain structure inspection and ultrasonic internal flaw detection. Each shipment is attached with complete test data and batch traceability records.
Custom Manufacturing & Supply Options
We support customized size, hardness and conductivity parameters, with sawn and precision grinding finishing services. In-stock products deliver within 3–5 days, and custom order quotations are completed within 24 hours. We provide full-process international logistics and customs document services for global customers.
Frequently Asked Questions
Q1: What is C17500 vs C17510?
A1: C17500 has cobalt as the major alloying element, which is suitable for RWMA standard resistance welding. C17510 has nickel as the main component.
Q2: Can we machine the plates after purchase?
A2: Yes. Carbide tools are suggested for machining in the heat-treated condition for excellent dimensional accuracy and surface polish.
Q3: Need heat treating before use?
A3: No, all items are solution treated and age hardened and may be machined or used immediately.
Q4: What is the corrosion resistance of C17500?
A4: The corrosion resistance is the same as pure copper, with stable performance in ordinary industrial conditions, and in certain particular situations it is superior to C17200 and tool steel.
Q5: What qualification papers can you provide?
A5: Each batch has EN 10204 3.1 MTC, supporting ISO 9001, RoHS and REACH compliance certification.
Contact Us
If you have size customization, bulk procurement and technical consultation demands for C17500 Beryllium Cobalt Copper Sheet, please send your detailed requirements to js01@jstongcai.com.cn. Our team will reply with a complete quotation within 24 hours.
