Beryllium Copper Plate For Plastic Molds
Grade Equivalents: UNS C17500 / CuCo2Be / Alloy 10 / RWMA Class 3 / EN CW104C
Application Focus: High-Conductivity Resistance Welding Electrodes, Seam Welder Discs, & Mold Inserts
Executive Standards: ASTM B194, ASTM B534, RWMA Class 3, ISO 5182
Size Range: Thickness 0.5mm - 25mm, Width & Length Custom Sawn or Rolled
Temper Condition: Solution Heat-Treated & Age-Hardened (TF00 / AT) or Cold-Rolled Tempers
Core Purpose: Superior Electrical/Thermal Conductivity Combined with Excellent Elevated-Temperature Strength
Quality Assurance: ISO9001:2015, RoHS Compliant, MTC 3.1 Certified
Description
C17500 Beryllium Copper Plate For Plastic Molds — High-Conductivity Mold Insert Solution with RWMA Class 3 Compliance
Established in 1997, Dongguan Jiaye Dingsheng Precision Casting & Forging Co., Ltd. has long-term expertise in copper alloy manufacturing. C17500 Beryllium Copper Plate For Plastic Molds (UNS C17500 / CuCo2Be / RWMA Class 3) Use cobalt-beryllium alloy formula and ageing hardening process, tensile strength up to 900 MPa. electrical conductivity is 45-60 % IACS thermal conductivity is 200-240 W/m K. Available in thicknesses from 0.5mm to 25mm, the product may be processed to specific sizes. It meets requirements of ASTM B534, ASTM B441 and ISO 5182 standards. Test certifications EN 10204 3.1 are supplied with every batch.

What Makes C17500 the Right Choice for Plastic Mold Applications?
Heat build-up in mould cavities readily causes product warpage, non-uniform shrinkage and extended moulding cycles. C17500 Beryllium Copper Plate For Plastic Molds is a good solution for such thermal bottleneck difficulties.
The alloy contains 2.40-2.70% cobalt and 0.40-0.70% beryllium and provides heat dissipation efficiency 3-5 times higher than regular P20 and H13 mould steel, which enables manufacturers to shorten cycle durations by 15%-50%. Unlike the high hardness C17200, C17500 is oriented towards electrical and thermal properties, and may be used in mould applications that need accurate temperature control.

Product Specifications
| Parameter | Value |
|---|---|
| Grade / UNS | C17500 / CuCo2Be |
| Grade Equivalents | Alloy 10 / RWMA Class 3 / EN CW104C |
| Standard | ASTM B534 / ASTM B441 / ISO 5182 |
| Co Content | 2.40 – 2.70% |
| Be Content | 0.40 – 0.70% |
| Base Metal | Copper (Balance) |
| Temper Condition | TF00 / AT (Solution-Treated & Age-Hardened) |
| Thickness Range | 0.5mm – 25mm |
| Width & Length | Custom sawn or rolled |
| Hardness (Aged) | 92 – 100 HRB / 200 – 250 HV |
| Tensile Strength | 690 – 900 MPa |
| Yield Strength | 550 – 750 MPa |
| Electrical Conductivity | 45 – 60% IACS |
| Thermal Conductivity | 200 – 240 W/m·K |
| Softening Temperature | Up to 450 – 550 °C |
| Quality Certification | ISO 9001, RoHS, REACH |
| Documentation | EN 10204 3.1 Mill Test Certificate |
Key Performance Advantages
- Stable thermal performance: Fast heat conduction decreases the cooling time of the mould and stabilises the size of the moulded product.
- High temperature structural stability: Mechanical characteristics are stable for long term thermal cycling, preventing deformation of hot runner accessories.
- Standard compatibility: Comply with RWMA Class 3 standard, suitable to both mould inserts and welding equipment accessories.
- Deformation resistance: It adjusts to constant high pressure operating conditions to minimise part deformation in high-volume manufacturing.
- Flexible processing performance: Pre-machining in annealed state and ageing hardening for the fabrication of complicated mould structures.
Application Scenarios in Plastic Tooling
- Thin wall injection moulding: It is used for mould cores and cavities as a way to reduce local overheating. This prevents burning and warpage of the Beryllium Copper Plate For Plastic Molds.
- Blow moulding parts: Used on pinch-off and neck ring parts to speed up flash cooling and preserve edge stability in extended cycle manufacturing.
- Hot runner components: Realizes precise temperature control to prevent glue leakage and premature freezing; supports surface plating for abrasive resin processing.
Quality Control Process
We implement three-stage full-process quality control: OES spectral analysis verifies alloy composition; production parameters and microstructure are monitored during processing; finished products undergo hardness, conductivity, size and surface inspection. Unqualified products will be reprocessed. Each batch is attached with complete test reports to achieve full material traceability.

Custom Manufacturing and Supply Options
We support custom thickness, width and length processing, with adjustable hardness and conductivity within the specification range. Custom inquiries get responses within 24 hours, and in-stock products are delivered in 3–5 days. We provide complete international logistics and customs document services.

FAQ
Q1: Why choose C17500 over mold steel for inserts?
A1: It has higher thermal conductivity, effectively shortening molding cycles and improving production efficiency for long-term mass production.
Q2: Is the solid plate safe for mold processing?
A2: Solid plates cause no safety risks. Dust and flue gas control measures are only required during grinding and cutting.
Q3: Can the material be processed by EDM?
A3: Yes. Proper current parameters and matching electrodes can meet the processing needs of complex mold structures.
Q4: How does it perform when processing corrosive resins?
A4: It resists acid corrosion produced by PVC and other resins, with better durability than ordinary untreated mold steel.
Q5: What certification documents are provided?
A5: Each order is equipped with EN 10204 3.1 test reports with complete composition, hardness and conductivity data.
Contact Us
For custom specifications and procurement of C17500 Beryllium Copper Plate For Plastic Molds, please send your detailed requirements to js01@jstongcai.com.cn. Our team will provide professional technical support and quotation within 24 hours.