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Tantalum Springs or Tantalum compression springs are mainly used in semiconductor industry, Chemical Vapor Deposition (CVD) and Physical Vapor Deposition (PVD) processes including Thermal and Electron Beam (E-Beam) Evaporation, Low Temperature Organic Evaporation, Atomic Layer Deposition (ALD), Metallic-Organic and Chemical Vapor Deposition (MOCVD) owing to Tantalum springs store and release mechanical energy, absorb shock, and conserve force between contacting surfaces, meanwhile, Tantalum springs can have corrosion-resistant performance in some acids because tanalum is nearly immune to chemical attacks at temperatures below 302 F (150 C). Our available tantalum spring wire sizes range from 0.33 mm to 1 mm to 2.50 mm diameter with strict tolerances in conformity with ASTM B 365.  We can make tantalum springs with the hard drawn spring wire to meet your required tantalum spring data such as

Tantalum springs are made of pure tantalum metal wire used in the strong acid and corrosion resistant required conditions.  on request or according to the customer's drawings or blueprint. 

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Standard Specification ASTM B 365 -98 for Tantalum rod + Tantalum Alloy Rod + Tantalum Wire + Tantalum Alloy Wire. 
This specification covers unalloyed and alloyed Tantalum rod + Tantalum Alloy Rod + Tantalum Wire + Tantalum Alloy Wire. 
The materials covered by this specification are : 
1. ASTM B 365 -98 UNS R05200, unalloyed tantalum, electron-beam furnace or vacuum-arc melt, or both. 
2. ASTM B 365 -98 UNS R05400, unalloyed tantalum, powder-metallurgy consolidation. 
3. ASTM B 365 -98 UNS R05255, tantalum alloy, 90% tantalum 10% tungsten, electron-beam furnace or vacuum-arc melt, or both. 
4. ASTM B 365 -98 UNS R05252, tantalum alloy, 97.5% tantalum 2.5% tungsten, electron-beam furnace or vacuum-arc melt, or both. 
5. ASTM B 365 -98 UNS R05240, tantalum alloy, 60% tantalum 40% columbium, electron-beam furnace or vacuum-arc melt, or both.