What are Tungsten Steel Bar Discs?
For electrical systems operating under high current interruption and extreme thermal stress, contact material selection directly determines service life and system reliability. Tungsten Steel Bar Discs function as arc-resistant contact surfaces in DC contactors, automotive horn switches, and high-voltage circuit breakers where copper-based or silver-based contacts fail due to melting or welding.
The Tungsten Rod Slice utilizes tungsten's 3,410°C melting point and 19.3 g/cm³ density to sustain repeated arcing without material transfer or contact welding. Each disc is processed through powder metallurgy, pressing, sintering, and precision machining to deliver consistent hardness and uniform grain structure-critical for predictable erosion rates in high-frequency switching applications.
Material Advantages of Tungsten Discs
Excellent cutting performance
Made from a solid pure‑tungsten blank, Pure Tungsten Disks feature high base hardness. The inherent mechanical strength of tungsten restrains edge deformation under load during material cutting. It delivers steady processing speed and reduces frequent tool re‑sharpening work. This property fits precision machining and heavy‑load working scenarios.
Precision machining
Pure Tungsten Discs are produced via multi‑stage mechanical finishing. The finished parts obtain flat contact surfaces and well‑controlled dimensional accuracy. Stable geometric precision keeps consistent working output from one workpiece to another, and meets requirements from applications with strict dimensional tolerance.
Chemical stability
Pure‑tungsten raw material brings inherent chemical inertness to Powder Metallurgy Tungsten Discs. The discs resist most common corrosive media and avoid unwanted surface chemical reactions. The material property helps maintain stable working performance across varied operating environments and lowers environment‑related premature wear risk.
Unique advantages of Pure Tungsten Disks
99.95% Purity
The discs are made of ≥99.95% tungsten raw material. Low‑impurity composition minimizes particle fallout and surface defects during polishing, delivering repeatable polishing results batch‑to‑batch.
Compact and exquisite
Pure Tungsten Disc for Car Horn adopts a compact structure. Standard and optional custom dimensions suit limited installation space for precision instruments and electronic‑related fine polishing tasks.
High-precision processing
Pure Tungsten Disks are finished via multi‑stage grinding processes. Strictly controlled flatness and surface roughness allow even material removal on flat surfaces and edges.
Long life and durability
Tungsten Rod Slice leverages tungsten's inherent high hardness to withstand continuous abrasive wear. Stable performance reduces replacement frequency and cuts operational downtime and costs.
Frequently Asked Questions about Flat Tungsten Contact Points
Why is the 99.95% purity requirement critical for Flat Tungsten Contact Points?
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Higher purity ensures the material remains chemically stable at extreme temperatures. Impurities can vaporize during high‑voltage switching, causing contamination of the surrounding dielectric medium or premature arc‑induced oxidation, which drastically reduces the lifespan of the contact component in sensitive HV systems.
How do you ensure consistent density of Tungsten Rod Slice in the sintering process?
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We utilize precision‑controlled vacuum sintering furnaces with multi‑stage temperature ramp‑ups. By regulating the atmosphere and heating duration, we ensure uniform grain growth and eliminate internal porosity, consistently achieving the 19.3 g/cm³ density required for high‑performance electrical arc resistance.
Can these Pure Tungsten Discs for Car Horns be customized for specific high‑voltage relay dimensions?
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Yes, we provide full OEM customization for diameter, thickness, and edge profile. Our CNC grinding capabilities allow us to meet specific mechanical constraints required for your proprietary contact assemblies while maintaining ±0.01mm dimensional tolerance for reliable integration.
How do Tungsten Discs perform in extreme temperature cycling?
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Tungsten has an extremely low coefficient of thermal expansion combined with a 3410°C melting point. This allows the discs to withstand repeated high‑current arcing events without undergoing structural warping or significant surface degradation, ensuring consistent performance over thousands of duty cycles.
Do these Pure Tungsten Disks meet international environmental standards?
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Yes, our tungsten material is fully compliant with RoHS and REACH regulations. We provide certified material test reports with every shipment to ensure our manufacturing process supports your internal quality management systems and downstream equipment compliance requirements.
contact us
We sincerely welcome you to contact us to learn more about our Tungsten Steel Bar Discs. Whether you have any questions about the product or need professional technical support and advice, our team will serve you wholeheartedly.
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