90WCu Tungsten Copper Alloy Sheet

Product Introduction

Zhuzhou Jiuding Metal Technology Corp Ltd is a professional manufacturer and supplier of high-performance tungsten copper alloy products, located in Zhuzhou, China — the core tungsten industrial base. We specialize in R&D, precision sintering and custom machining of 90WCu Tungsten Copper Sheet, a high-tungsten thin plate material widely applied for high-temperature resistance, arc erosion resistance and precision heat dissipation scenarios. All products are strictly produced and inspected in accordance with GB/T 8320 and ASTM B702 dual industry standards, featuring high tungsten density, excellent rigidity, ultra-low ablation loss and stable thermal conductivity. With mature vacuum infiltration powder metallurgy technology and complete quality control system, we supply high-precision 90WCu thin tungsten copper sheets for global EDM machining, high-voltage electrical and precision electronic heat dissipation industries.

Product Overview

90WCu Tungsten Copper Sheet is a high-grade tungsten-copper composite plate composed of 90% tungsten and 10% copper. As a typical high-tungsten thin sheet alloy, it is manufactured via advanced vacuum infiltration process, perfectly combining tungsten’s ultra-high temperature resistance, high hardness and structural stability with copper’s reliable thermal and electrical conductivity. The 90WCu thin plate features uniform pore-free internal structure, excellent high-temperature dimensional stability and outstanding arc ablation resistance. It overcomes the defects of pure copper materials such as easy deformation and large loss at high temperature, and solves the insufficient thermal conductivity of pure tungsten. Custom size processing is fully supported to meet personalized requirements of thin plate cutting, precision milling and special-shaped machining for industrial applications.

Dual Standard Compliance (GB/T 8320 & ASTM B702)

Our 90WCu tungsten copper sheets comply with both Chinese national standard and American industrial standard, with unified composition tolerance, physical performance indicators and inspection criteria, fully meeting global industrial procurement, third-party testing and high-end equipment matching requirements:

• GB/T 8320 (Chinese National Standard): Authoritative standard for copper-tungsten alloy materials in China. It standardizes the technical indicators of 90WCu tungsten copper sheets, including chemical composition, density, hardness, conductivity and mechanical properties, serving as the core production and inspection basis for high-tungsten thin plate products.

• ASTM B702 (US Industry Standard): International universal standard for tungsten-copper alloy finished products. It regulates dimensional tolerance, flatness accuracy, mechanical properties and quality evaluation standards for tungsten copper sheets, ensuring full compatibility with overseas industrial procurement and export certification systems.

GB/T 8320 Standard Specification for 90WCu Alloy

In accordance with GB/T 8320 and ASTM B702 regulations, 90WCu is a mainstream high-tungsten grade for precision thin sheet and high-temperature resistant components. All core performance indicators are strictly implemented in our whole production and quality inspection process:

• Standard Grade: 90W10Cu / 90WCu

• Standard Composition: Tungsten 90%, Copper 10%, total impurities ≤0.5%

• Standard Hardness: ≥ 220 HB

• Standard Resistivity: ≤ 5.5 μΩ·cm

• Standard Electrical Conductivity: ≥ 30% IACS

• Standard Density: 16.75 g/cm³

Customization & Stable Performance Control

Aiming at diverse industrial needs for thin plate processing and assembly, we provide full-size customization and precision finishing services for 90WCu tungsten copper sheets. Strict internal structure control ensures consistent hardness, flatness and performance stability in batch production:

• Custom Size Service: Support custom thickness, length, width, sheet cutting, flat grinding and special-shaped profiling according to drawings

• Structure Advantage: Vacuum infiltration forming, high compactness, uniform density, no pores and no internal segregation

• Performance Stability: Consistent hardness, flatness and thermal conductivity in different batches, suitable for mass precision processing

• Processing Precision: Support high-precision plane grinding, fine cutting, drilling and surface finishing for precision industrial components

Core Technical Specifications

All technical indicators of 90WCu tungsten copper sheets strictly conform to GB/T 8320 and ASTM B702 standards, with stable and reliable comprehensive performance for high-temperature and precision machining applications:

Key Product Features

• Ultra-high High Temperature Resistance: 90% high tungsten content endows the sheet with ultra-high temperature resistance up to 1200℃, maintaining stable structural rigidity and no deformation under long-term high-temperature working conditions.

• Excellent Arc Erosion & Wear Resistance: High-density tungsten matrix structure provides superior arc ablation resistance and mechanical wear resistance, greatly reducing material loss during EDM machining and high-voltage arc working.

• Balanced Thermal & Electrical Conductivity: The 90W10Cu ratio achieves the best balance of high-temperature stability and conductivity. It avoids the poor thermal conductivity of pure tungsten and the low high-temperature resistance of pure copper.

• Superior Flatness & Dimensional Stability: Vacuum sintering and precision flat grinding process ensure high sheet flatness, uniform internal structure and zero deformation after long-term processing.

• Flexible Customization for Thin Sheet: Support ultra-thin sheet customization, irregular cutting, precision grinding and special-shaped processing, fully adapting to precision industrial component manufacturing needs.

Main Applications

90WCu tungsten copper thin sheets are widely used in high-temperature resistant, precision EDM and high-voltage electrical industries, serving global precision manufacturing and new energy fields:

• Precision EDM Machining: High-precision tungsten copper electrode sheet for die sinking, wire cutting and precision mold machining

• High-voltage Electrical Components: Arc extinguishing plates, conductive gaskets and high-current contact sheets for high-voltage switches

• Precision Electronic Heat Dissipation: High-temperature resistant heat dissipation thin sheets for semiconductor and precision electronic equipment

• High-temperature Industrial Fixtures: High-rigidity, anti-deformation fixture sheets for high-temperature processing equipment

• Custom Precision Alloy Sheets: Special-shaped tungsten copper thin plates for aerospace, new energy and precision automation equipment

Manufacturing & Quality Assurance

Zhuzhou Jiuding Metal is an ISO-certified factory with ISO9001, ISO45001, ISO18001 and ISO13485 qualifications. All 90WCu tungsten copper sheets are produced under full-process quality control in accordance with GB/T 8320 and ASTM B702 dual standards. From raw material screening, high-temperature vacuum sintering to precision flat grinding and final dimensional inspection, every process is strictly controlled. We can provide third-party test reports, COA certificates and EN10204 3.1 inspection reports on request, ensuring full quality traceability and global export compliance.