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Physical and chemical properties of tungsten smelting crucible & sinter tungsten crucible .
Product Name Material Composition Purity Density Using temperature Highest temperature Tolerance Smooth degree Specifications | Tungsten crucible Tungsten 99.95% ≥18.0g/cm3 1800C 2600°C ±0.5mm Ra≤3.2
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Quantitative analysis | ||||||||||
Element | Ni | Mg | Fe | Pb | Al | Bi | Si | Mo | Ca | P |
Concentration | 0.001 | 0.0005 | 0.002 | 0.0001 | 0.0005 | 0.0001 | 0.001 | 0.002 | 0.0005 | 0.001 |
Element | C | O | N | Sb | Cu |
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Concentration | 0.001 | 0.003 | 0.0006 | 0.0006 | 0.0006 |
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Purity(metallic base) W≥99.95% | ||||||||||
Applicable temperature environment: ≤2700C
(1) sintering tungsten crucible:
Density: 18.0~18.5g/cm3
Working Temperature: 1800~2600DC
Diameter: 100~500mm(max)
Cubage: 0.4~100 litres
(2) Forging Tungsten Crucible:
Density: 18.5~19.2g/cm3
Woring Temperature: 1800~2600DC
Diameter: 18~150mm(max)
Cubage: 2~500ml
Specifications: Dimensions and tolerances Unit:mm
Delivery condition | Specification | Tolerance | Thickness | Roughness | ||
Diameter | Height | Diameter | Height | |||
Sintering/forged | 10~500 | 10~750 | ±3.0 | ±3.0 | 8~20 |
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Final Finished | 10~450 | 10~550 | ±0.5 | ±1.0 | 7~18 | <3.2 |
Typical Applications:
Tungsten has a unique property of which it's melting point can reach 3410 tungsten crucible is widely applied in high temperature vacuum furnace melting environment such as sapphire growing furnace, quartz glass melting furnace, and rare earth melting furnace. The working temperature of tungsten crucible is above 2000. For sapphire crystal growing furnace, high-purity, high-density, no crack tungsten crucible with other features of exact measurement and smooth surface has decisive influence on the success of crystal growth, quality control of pulling crystal, discharging and service life during sapphire growing process.
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2. As a manufacture, we know much in technique and can give you more support in technique problem.
3. Our products are complete in specifications with various of sizes.
4. We enjoy a good reputation in the customers in domestic and overseas markets.
Our factory can according to your need to customize different type required.
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