Pure Tungsten Rod / Bar

Zhuzhou Jiuding Metal Technology Co., Ltd. Model No.: JDTG‑PW‑002

Product Overview

Pure tungsten rod / bar is solid cylindrical refractory metal stock manufactured by powder metallurgy sintering followed by multi pass swaging, forging and drawing processes, adopting 99.95% high purity tungsten raw material. Multiple surface finishes are available, including as forged, ground and polished surfaces. The picture shows precision ground pure tungsten rods with bright, smooth metallic surface, straight and uniform diameter. Tungsten possesses the highest melting point among all metals at 3422°C, featuring ultra low vapor pressure, low thermal expansion coefficient, excellent thermal electrical conductivity and outstanding high temperature creep resistance. We provide comprehensive secondary processing services such as cutting, turning, drilling, threading and CNC fabrication according to customer drawings. This product is widely adopted in vacuum furnace thermal field assemblies, semiconductor equipment, welding electrode manufacturing, electron optical devices, aerospace high temperature test and scientific research laboratories.

Core Product Advantages

• Ultra high Material Purity: Main grade adopts 99.95% pure tungsten; forged processed rods achieve stable density ≥18.8 g/cm³, guaranteeing consistent physical chemical performance batch by batch. • Diversified Surface Treatment: As forged, ground or polished surfaces optional; solid bar free of cracks, internal pores, delamination and inclusions. The ground version features bright mirror like surface, precise dimensional tolerance and excellent straightness as shown in the photo. • Excellent Vacuum Compatibility: Low vapor pressure and low outgassing property; will not generate volatile contaminants under high temperature vacuum working environments. • Outstanding High temperature Comprehensive Performance: Retain sufficient mechanical strength under extreme high temperature conditions; resist thermal shock and high temperature creep deformation for long time service. • Powerful Customization Capability: Support non standard diameter, length, tolerance and threaded features; realize complex shape shafts, studs and special shaped parts via precision CNC machining. • Complete Document Support: COA, CO, COC, EN10204 3.1 inspection certificate and third party material test reports can be supplied upon client’s request. • Authorized Factory Qualifications: ISO9001, ISO45001, ISO13485, RoHS and REACH certifications to satisfy global export requirements.

Product Performance Features

• Extreme High temperature Resistance: Can serve long term as heating elements and structural support parts inside high temperature vacuum and hydrogen furnaces. • Good Thermal & Electrical Conductivity: Fit for electric vacuum devices, high current electrodes and conductive structural assemblies. • Reliable Radiation Shielding Capacity: High density brings remarkable attenuation effect for X‑ray and gamma‑ray radiation. • Low Thermal Deformation: Low thermal expansion coefficient minimizes dimension shift under repeated heating cooling cycles. • Good Machinability: Can be turned, milled, drilled and threaded into all kinds of special shaped refractory components. • Strict Batch Stability: Mature powder metallurgy, forging and swaging workflow ensure repeatable product performance for large volume orders.

Executive & Testing Standards

Executive Standards: GB/T 3459‑2022, GB/T 4187, Mil‑T‑21014, ASTM B760‑07(2023), ASTM B777‑99. Testing & Verification Standards: Chemical composition test follows GB/T 4324; density inspection complies with GB/T 3850; metallographic grain size test refers to GB/T 6394; dimension and straightness inspection implements ASTM B760‑07(2023).

Application Scenarios

Benefiting from high melting point, low outgassing, good thermal electric performance and high density shielding property, pure tungsten rods and bars are widely used across multiple high end industrial sectors:

• Vacuum Furnace Hot zone Components: Manufactured into heating rods, suspension studs, support shafts and fasteners for multi layer heat shield assemblies inside sintering furnaces, brazing furnaces and crystal growth furnaces, bearing structural load under continuous ultra high temperature vacuum conditions.

• Semiconductor Equipment Parts: Used as electrode shafts, fixture support pins and high temperature carrier shafts for ion implantation, plasma etching and thin film deposition equipment; low outgassing characteristic ensures clean semiconductor process environment.

• Welding & EDM Electrode Raw Stock: Serves as base material for TIG welding electrodes, plasma torch electrodes and electrical discharge machining electrode rods, taking advantage of high temperature arc erosion resistance.

• Electric Vacuum & Light Source Industry: Applied for high power tube internal support posts, cathode lead out rods and lamp component structural shafts requiring stable electrical conduction.

• Medical & Industrial Radiation Protection: Further machined into collimator pins and structural studs for medical imaging instruments and industrial non destructive testing facilities for X‑ray and gamma‑ray shielding.

• Aerospace High temperature Simulation Test: Act as thermal test support jigs, high temperature loading shafts and specimen holders for aerospace material thermal cycle simulation experiments.

• Quartz & Sapphire Production Equipment: Used as high temperature stirring shafts and positioning pins inside sapphire growth furnaces and quartz melting equipment, keeping stable performance in contact with high temperature molten oxides.

• Analytical Instrument & Scientific Research Equipment: Fabricated into heating stage support posts, sample holder shafts for electron microscopes, mass spectrometers and various laboratory high temperature analytical devices.

• Custom Refractory Blanks for Metallurgy & Research: Serve as raw blanks for laboratories and metallurgical equipment to produce tungsten studs, bolts, shafts and various customized refractory components.

Production & Quality Assurance

All JDTG‑PW‑002 pure tungsten rods are produced with standardized powder metallurgy sintering, multi pass forging/swaging, stress relief annealing and precision surface finishing, complying with Chinese GB standards, US Mil‑T‑21014 and ASTM specifications. Full process quality control covers raw material incoming inspection, sintering parameter monitoring, forging procedure control, surface treatment and finished product full inspection including straightness check, to guarantee purity, density, dimensional accuracy and surface integrity for every batch.

Upon request, we can provide full set official qualification documents including third party material testing reports, COA (Certificate of Analysis), CO, COC and EN10204 3.1 factory inspection certificate. Our factory holds ISO9001, ISO45001, ISO13485 management system certifications together with RoHS and REACH compliance. We support industrial grade and semiconductor grade mass production, as well as drawing based OEM & ODM custom processing services.