Home Products Welding Products Projection Welding Electrodes Projection Welding Electrodes Ensuring top-quality welding performance. Contact Us Contact Luvata offers beryllium-free and high-purity projection welding electrodes for resistance projection welding. In projection welding, achieving a strong and clean weld is paramount. With decades of experience in the industry, Luvata has developed the perfect welding electrode solutions for resistance projection welding. Projection welding electrodes typically cover a larger area compared with resistance spot welding electrodes. We offer projection welding electrodes in all shapes and sizes, from a flat cold-formed electrode to quite complicated multipoint electrodes. Our projection welding projection welding electrodes are used to weld nuts, bolts or other fastening assembly to other metal parts. Our products are always made to customers’ exact specifications and are trusted especially by automotive factories, white goods and other industries worldwide. Applications Projection welding Copper Alloys for Projection Welding Electrodes The alloy used for projection welding electrode plays a critical role in the weld result. Luvata offers high-purity copper alloys specifically developed to meet demanding projection welding needs: Copper, Nickel, Silicon and Chromium (CuNiSiCr) Dispersion Strengthened Copper with Aluminum Oxide Copper Chrome Zirconium (CuCrZr) Copper Nickel Silicon (CuNiSi) Manufacturing Locations Asia Suzhou, China Europe Pori, Finland Welwyn Garden City, UK North America Delaware, US South America São Paulo, Brazil Kova® – The Perfect Alloy for Projection Welding Electrodes Our top brand for projection welding electrodes, Kova®, has transformed projection welding product markets with its physical strength and high quality. Made of copper, nickel, silicon and chromium (CuNiSiCr), Kova® can withstand huge forces and heat temperatures without collapsing, ensuring top-tier results. Kova® is entirely beryllium-free, making it environmentally friendly while offering similar or even better performance than products containing beryllium and cobalt. It is the perfect replacement for harmful beryllium copper alloys. Projection Welding Technical Support Luvata is known for designing and offering the best available solutions for our welding product customers, from the alloy used to the form of packaging. Our highly experienced welding product specialists are ready to find answers to your most detailed questions and work together with you to develop suitable solutions, fostering long-lasting customer relationships. Read more about our welding cap products Kova®, A-Trode® and Nitrode®, and contact us for more information. Projection Welding Electrode Solutions A-Trode® A-Trode® is the universal cap electrode for resistance welding of light-to-medium gauge coated and uncoated steels. A-Trode’s freedom from oxygen allows us to alloy the copper with the optimum levels of chrome and zirconium. Alloy: Copper Chrome Zirconium (CuCrZr) Quality Specifications AlloyC18150 CuCrZr, EN ISO 5182 A2/2, DIN 17666 Wn 2.1293, RWMA Class IIChemical compositionCr 0.7% to 1.2%, Zr 0.06% to 0.15%. Others max. 0.2%, Cu balancePhysical material properties at 200CMass: 8.9g/cm3Specific heat: 376 J/kg.KThermal conductivity: 320 W/m.KExpansion coefficient (20-300oC): 17.0 x 10-6 m/mKElectric conductivity: min. 43 S/m(solution annealed and hardened) min 74% IACSSoftening temperature: min. 500°CDimensions and tolerancesTo ISO 5821 or other standards as required.Special electrodes to customer drawingPackagingMost items in cartons of 500 pieces. DocumentationAcceptance test certificate EN 10204 3.1 B possible if desired against a charge.Area of applicationMale and female resistance welding electrodes. Backing dies – series and indirectSeam welding wheelsProjection welding electrodes Mechanical Specifications – Quality Form of supplyTensile strength [N/mm2] 0.2% Offset yield strength [N/mm2] Elongation AS [%] Hardness Electrodes≥ 490≥ 430≥ 15≥ 17 Physical Properties Hardness at ambient temperatureMinimum 80 HRBConductivityMinimum 80% IACS Kova® Kova® is a beryllium-free alloy made of copper, nickel, silicon and chromium (CuNiSiCr). It is a high-strength, beryllium-free precipitation hardening alloy with medium-high electrical and thermal conductivity. Kova® is the perfect replacement for harmful beryllium copper alloys. Benefits Easy to machine and form Extended use due to hardness High strength with moderate thermal and electrical conductivity Easy disposal Applications Adaptors Shanks Projection welding electrodes Weld wheels Specifications AlloyKova® NK203 is a RWMA Class III alloyChemical compositionNi 1.8 – 3.0%; Si 0.4 – 0.8%; Cr 0.1 – 0.8%; Fe 0.15% max;. Cu balancePhysical, electrical and thermal propertiesDensity: 8.8 kg/dm3Coefficient of linear expansion: 0.0000175 1/KSpecific heat: 380 J/(kg x K)Melting temperature: 1020 – 1040°CElectric conductivity: 22 – 24 MS/mElectrical conductivity (% IACS): 38 – 42%Electrical resistivity (mass): 0.37 – 0.41 g/m3Thermal conductivity (20°C): 220 W/KmDocumentationAcceptance test certificate EN-CEN/TS 13388:2008 Errors and omissions excepted. Values given are industry standards. Mechanical Specifications Form of supplyTensile strength [N/mm2] 0.2% Offset yield strength [N/mm2] Elongation AS [%] Hardness HVAdapters650-800650-7509-15220-225 Nitrode® The Nitrode® cap is a cold-formed alloy of dispersion strengthened copper with aluminum oxide. Nitrode® demonstrates superior weld performance on a variety of steels. It resists mushrooming on the contact surface, allowing more welds before tip dressing, heat stepping or tip change. No other cap electrode can match Nitrode® for its cost-effective, high quality performance in resistance-welding applications. Nitrode®consistently outperforms copper chrome and copper chrome zirconium electrodes by resisting annealing. All Nitrode® materials are fully traceable. Nitrode® electrodes can be recognized by their single knurls markings. Advantages Longer weld life Non-stick Reduces energy requirements Works on all steels Lowers manufacturing costs Quality Properties AlloyC15760 CuAl2O3, EN ISO 5182 C20/1, RWMA Class 20Chemical compositionAluminum 0.60% by weight as Al2O3 Cu balancePhysical material properties at 20oCDensity: 8.81g/cm3Thermal conductivity: 322 W/m.KExpansion coefficient (20-150°C): 16.6 x 10-6 m/mKElectric conductivity: 78% IACSSoftening temperature: 1083°CDimensions and tolerancesTo ISO 5821 or other standards as required. Special electrodes to customer drawing.PackagingMost items in cartons of 500 piecesDocumentationAcceptance test certificate EN 10204 3.1 B possible if desired against a charge.Area of applicationMale and female resistance welding electrodeBacking dies – series and indirectProjection welding electrodes Mechanical Properties Form of supplyTensile strengthMPaYield strengthMPa Elongation[%] HardnessHVElectrodes489 – 537393 – 44118 – 23%160 Physical Properties Hardness at ambient temperature83 HRBConductivity78% IACS Errors and omissions excepted. Values given are industry standards. Actual properties will vary dependent upon amount of cold work. Document Library Related Industries Automotive Welding read more Our specialists are just an email away! 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