Spot Welding Electrodes
Overview
Spot Welding Electrodes are high-performance electrodes manufactured from tungsten-copper composite materials via powder metallurgy and diffusion bonding processes. They combine high-temperature resistance, arc erosion resistance, superior electrical and thermal conductivity, and low adhesion properties. Widely employed in automotive manufacturing, aerospace, electronics, and electrical industries, these electrodes facilitate resistance spot welding of high-strength steels, aluminium alloys, and precision components.
As a welding electrode manufacturer, FANMETAL possesses over two decades of specialised expertise. Our in-depth research into metallic materials, including tungsten alloys, molybdenum alloys, titanium alloys, and nickel alloys, enables us to effectively address customer requirements. Choosing us represents the most cost-effective solution.
Welding Electrode Technical Parameters
| Grade | W | Cu | Features |
|---|---|---|---|
| W50Cu50 | 50% | 50% | Good electrical conductivity, moderate hardness, suitable for medium-strength welding |
| W60Cu40 | 60% | 40% | Enhanced high temperature resistance for higher currents |
| W70Cu30 | 70% | 30% | High hardness and strong resistance to deformation, suitable for high-load welding |
| W80Cu20 | 80% | 20% | Excellent wear resistance but slightly lower conductivity for precision spot welding |
| W50Cu50 | W60Cu40 | W70Cu30 | W80Cu20 | |
|---|---|---|---|---|
| Density (g/cm³) | 11.5–12.0 | 12.5–13.0 | 13.5–14.0 | 14.5–15.0 |
| Hardness (HV) | 80–100 | 100–120 | 120–140 | 140–160 |
| Conductivity (%IACS) | 40–50 | 30–40 | 20–30 | 10–20 |
| Thermal conductivity (W/m·K) | 180–200 | 150–170 | 120–140 | 90–110 |
| Operating temperature (°C) | ≤800 | ≤900 | ≤1000 | ≤1100 |
| Sizes of welding electrodes |
Dia:3-20mm Length:50-150mm |
| Shape | Cylindrical/flat/cone/special-shaped |
| MOQ | 5PCS |
| Surface | Polishing, Grinding |
| Delivery Time | 20-30DAYS |
| Standard | ASTM B702, GB/T 8320 |
| Certification | ISO 9001 |
Tungsten Copper Electrode Characteristics
- Tungsten has a high melting point and excellent high-temperature resistance, maintaining structural stability under high-temperature arcs and resisting softening and deformation.
- Copper provides excellent electrical and thermal conductivity, resulting in high current transmission efficiency, rapid local heat dissipation, and low energy loss.
- The unique evaporative cooling effect of copper, where it absorbs heat through evaporation at high temperatures, further reduces electrode temperature and enhances thermal stability.
- High hardness and strong wear resistance make it suitable for various harsh welding environments and ensure a long service life.
- The low coefficient of thermal expansion minimises thermal deformation, resulting in high welding precision.
- Good anti-adhesion properties prevent sticking to the workpiece material, reducing spatter and lowering cleaning frequency.
Resistance Welding Electrodes Use




- Automotive Manufacturing Sector: Vehicle bodies are typically constructed from high-strength steel and aluminium alloy components. Spot Welding Electrodes are employed for repairing and welding bodywork, critical structural elements such as chassis and frames, as well as precision electronic components, including airbag sensors.
- Aerospace Sector: They are employed for joining difficult-to-weld materials such as titanium alloys and nickel-based high-temperature alloys, which are extensively utilised in aircraft engines, airframe structures, and spacecraft components. Their high-temperature resistance (up to 3000°C) ensures the safe operation of spacecraft in extreme environments. Particularly in manufacturing precision components for aircraft fuel and hydraulic systems, tungsten-copper electrodes ensure the strength and reliability of welded joints, meeting the stringent requirements of the aerospace sector for components.
- Electronics Manufacturing: Tungsten Copper Electrodes are employed for welding lead frames, semiconductor chips, high-density circuit boards, capacitors, resistors, transistors, and other electronic components. Their high precision and stability ensure the reliability of electronic products.
- Special Material Welding: Suitable for welding difficult-to-weld materials such as high-chromium stainless steel, duplex stainless steel, pure titanium and titanium alloys, nickel-based and cobalt-based high-temperature alloys.
- Precision Mould Manufacturing: They serve as an electrode for electrical discharge machining (EDM) to process moulds made from high-hardness materials such as cemented carbide and hardened steel.
Spot Welding Electrodes Pictures


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Ordering Advantages
Why Choose Us
FANMETAL is an export supplier with over twenty years of professional experience in non-ferrous metal products, and has now collaborated with more than fifty countries and regions, including the United States, the Netherlands, India, and Brazil.
24-Hour Response Service
We quickly determine the product customers need when they inquire, ensuring no time difference issues. Our 24/7 customer service ensures all customers receive equal attention, no matter their location.
01
Excellent Customized Services
We customize production to match customer drawings and design/process as per requirements. Our team ensures customized products meet or exceed industry standards, ensuring high functionality and reliability.
02
Global Shipping
We partner with professional logistics firms to offer multimodal transport options like UPS, DHL, and FedEx, catering to diverse cargo and deadline requirements. We can effectively avoid trade barriers, shorten the delivery cycle, ensure the safety and on-time arrival of goods.
03
Professional equipment and team
We have a professional technical team and are equipped with advanced production equipment such as vacuum furnaces, CNC machine tools, rolling mills, etc. You can trust our product quality and processing technology.
04
Efficient after-sales service
If you have any questions after receiving the product, please feel free to contact us. We will provide the best after-sales solution for customers based on the actual situation, and we can also give you a discount on your next order.
05
Related News

Tungsten Copper Electrode, Spot Welding Electrodes To Malaysia
Recently, our company supplied this product to a Malaysian customer. Our electrode products met the customer's stringent requirements in both quality and specifications, helping them improve their automotive manufacturing efficiency by 50%, and they indicated that they would continue to place orders in the next quarter. FANMETAL's professional team helped the customer solve problems related to insufficient precision, electrode cracking, and long-term compliance. This delivery not only verified our company's technical strength in the field of tungsten-copper precision products but also improved our service system in the Southeast Asian market. In the future, our company will continue to focus on the deep processing of non-ferrous metals, optimizing products and services to meet the needs of overseas customers and contributing to the upgrading of local manufacturing industries.

Do You Have Any Question?
Q: What is the best WCu electrodes?
A: In practical applications, targeted selection should be made according to core parameters such as current size, heat load, and processing accuracy, and gradient functional materials can be used to optimize performance if necessary. For example, the composition ratio of W75Cu30 is the best in precision machining.
Q: Do you provide free samples? How long can it be delivered?
A: Yes, we can provide free samples and deliver within 7-20 days.
Q: How to guarantee the quality?
A: Our company has advanced production equipment and professional testing facilities. Our finished products are carefully inspected by QC personnel. If you encounter any issues after receiving the product, please contact us for a satisfactory solution.
Q: What are your terms of payment?
A: Payment<=1000 USD, 100% in advance. Payment>=1000 USD, 30% T/T in advance, balance before shipment. If you have another question, pls feel free to contact us as below.
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