Tungsten core wire (for semiconductor production diamond wire)
Ｗ２５ Ｗ３０ Ｗ３５ Ｗ４０
Tungsten core wire is the core wire for next-generation semiconductor production diamond multi-wire saws.
(Product Introduction) ●Full Name: Tungsten Core Wire (for Diamond Multi-Wire) ●Category: Cutting Tools ●Usage: Core wire for diamond multi-wire saws ●Application: Multi-slicing of hard and brittle materials such as silicon, sapphire, neodymium iron magnets, SiC, GaN, etc. ●Features: Compared to the current high carbon steel core wire (standard: 35μm is the limit), tungsten (standard: 25μm and above) allows for high-tensile, thin-diameter multi-slicing cutting, and the cutting surface is a beautiful mirror finish. Product Specifications) Abbreviations: W = Tungsten, Re = Rhenium, S = Sample available ●Specifications: Tungsten diameter: 25, 30, 35, 40μm ●Model Numbers: W25, W30, W35, W40 ●Packaging: Standard length of 100 km (can be wound in lengths of 1 km to 200 km to match the user's reel shape) ●Weight of 100 km roll: W25: 10 kg, W30: 15 kg, W35: 20 kg, W40: 25 kg (net weight: reel weight is separate)
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basic information
Properties of W: - Specific gravity (Sp): 19.3 g/cm³ (almost the same as gold) - Melting point: 3380°C (the highest among metals) - Mohs hardness: 7.5 - Boiling point: 5555°C - Thermal conductivity: 160 W/m·K (at 300 K) Strength: - Tensile breaking strength: - W25: 3N (approximately 300 gf) - W30: 4N (approximately 400 gf) - W35: 5N (approximately 500 gf) - W40: 7N (approximately 700 gf) Comparison of physical properties with high carbon steel core wire: - Electrical resistivity: about half that of carbon steel - Breaking strength: more than 1.2 times - Torsional rigidity: more than 10 times - Young's modulus: 1.7 times - Elongation ratio: about 60% Chemical properties of W: - Material: Tungsten W 99.4% + Rhenium Re 0.6% alloy - Symbol: WRe0.6 - Reaction with O2: Burns at 400-700°C to produce WO3 (oxidation prevention and cooling measures are necessary) - Hazardous material: No - Toxicity: None - Quality standard: ASTM B760 Production process of W wire: W powder → Re 0.6% doping → Powder metallurgy hot forging → Round bar → 0.39 mm original wire → Hot drawing through multi-stage die to form → 0.025 mm wire
Price information
(Price for one roll of 100 km length, including shipping and tax) - W25: 210,000 yen - W30: 250,000 yen - W35: 290,000 yen - W40: 360,000 yen
Price range
P3
Delivery Time
P4
Applications/Examples of results
Core wire of a diamond multi-wire saw.
Detailed information
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Electron microscope photograph
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Tungsten ultra-fine wire
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(W line production process) W powder → Re 0.6% doping → powder metallurgy hot forging → round bar → 0.39 mm original wire → hot drawing forming through multi-stage die mouth → 0.025 mm wire
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100 km roll of bobbin
Line up（4）
| Model number | overview |
|---|---|
| W25 | |
| W30 | |
| W35 | |
| W40 |
catalog（2）
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Company information
アソシエイト トレーディング 土屋 裕 v09018951120 qq3508274141 ttt@zd.wakwak.com
Associate Trading Co., Ltd. will produce products based on the following policies: 1. As a trading company, we generally do not hold product inventory. 2. The transaction conditions are: advanced payment and, depending on the item, a lead time of approximately 40 days for made-to-order production. 3. Once the order is confirmed, we will issue an order confirmation. 4. Deliveries will be made in installments whenever possible, allowing users to see and try the products themselves while confirming the quality during delivery. 5. Therefore, we ask users to set delivery dates that allow for as much flexibility as possible for partial deliveries. 6. For users with ongoing transactions, we generally ask for your understanding regarding lead time stabilization through procurement from multiple companies. 7. In the unlikely event that issues arise with quality, lead time, cost, or transportation, we can respond flexibly through procurement from multiple companies. 8. Our company directly trades with approximately 500 factories in China, so you can trust us to handle your needs with confidence.
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