Product Name: Form-Stable Tungsten Alloy Wire, Va-P-Ln-1.8-50, Diameter 0.050 mm (50 µm) Required Quantity: 1221 Kg (with T (Нидерланды - Тендер #70245671)

• Date Posted: 2026-01-26 11:44 From Russian Site
• Valid to:2026-04-13
• Purchase Quantity: 1221 Kg
• Trade Terms:FOB
• Max budget:＜1000 USD
• Payment Terms:T/T
• Sourcing Request From:Request From: Netherlands
• Shipping Method:Land freight
• Destination: Russia
• Quote Now Quote Left: 10 Product Description Buyer Business Info. Form-Stable Tungsten Alloy Wire Detailed Technical Specifications for Tungsten Alloy Wire according to GOST 19671-91:
  
  1. Material & Chemical Composition:
  
  Alloy Grade: VA-P-LN-1.8-50.
  
  Tungsten (W) Content: ≥ 99.95%.
  
  Impurity Limits (max %): Fe - 0.005; Ca - 0.005; Al - 0.001-0.006; Mo - 0.001-0.004.
  
  2. Geometric & Physical Parameters:
  
  Diameter: 0.050 mm (50 µm) with tolerance ±1%.
  
  Cross-section: Round.
  
  Condition: Cleaned (etched/polished), High Precision (P).
  
  Key Property: Form-stable (non-sagging) up to 2600°C.
  
  Nominal weight of 200 mm segment: 7.58 mg (±2%, i.e., 7.43 - 7.73 mg). Weight deviation per spool ≤ half of the diameter tolerance field.
  
  Conditional tensile strength: 55 - 100 gs/mg/200mm.
  
  3. Spool & Packaging Requirements (Mandatory):
  
  Continuous length per spool: 7500 m (min) to 8000 m (max). One continuous piece per spool.
  
  Spool type: Tarified dielectric spools.
  
  Winding: Dense, even, without knots, loops, or reverse twists. Free flange height ≥ 2 mm. The wire end must be fixed.
  
  Packaging: Vacuum packaging.
  
  4. Quality & Surface Inspection (Strict):
  
  Surface: Must be free of scratches, burrs, splits, cracks, oxidation marks, grease, and foreign inclusions.
  
  Diameter uniformity: To be tested by heating in an inert atmosphere with constant current (30-160 mA). Uneven glow ("zebra" pattern) is unacceptable.
  
  Inspection methods: Optical microscopy (≥2000x) or SEM, comparing with approved reference samples.
  
  5. Commercial Terms:
  
  Order Quantity: 1221 kg, with a delivery tolerance of ±10%.
  
  Needed from supplier: Please confirm capability to meet ALL above specs, provide a detailed technical data sheet, and offer paid samples for approval.
  
  Target Price: Please quote on FOB China port basis. Please sign in to view buyer business information if you are Premium Member.

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