Tungsten boat
Dignity
The advantages of tungsten boats applies exceptional heat resistance (t° PL. of tungsten is +3422°C), high temperature creep resistance, high elastic modulus, the minimum coefficient of thermal expansion compared with other metals, resistance to aggressive reagents, corrosion resistance, strength, durability, reliability.
| Physical properties W | |
|---|---|
| Atomic (molar) mass, g/mol | Of 183.84 |
| Oxidation | 6, 5, 4, 3, 2, 0 |
| Density [g/cm3] | 19,25 |
| The melting temperature t°C | 3422°C |
| The heat of fusion kJ/mol | 191 |
| The thermal conductivity K [W/(m·K)] | The 162.8 |
| Heat of evaporation kJ/mol | 4482 |
Disadvantages
The difficulty of obtaining tungsten in its pure form, a large proportion (like gold) and brittle at low temperature. Tungsten boat not sufficiently plastic at ordinary temperatures. Because of its exceptional properties it is amenable to treatment (rolling, drawing and forging) only with considerable heat.
Manufacturer
Tungsten boats is produced by a powder pressing of high quality tungsten with further machining. Refractoriness, hardness, guarantee heat resistance, high operational reliability. They are produced of any shape and parameters. Tolerances are agreed with the customer. The price depends on the complexity of the configuration, the additional requirements of the customer and sizes. Quality products are standardized specifications.
Tungsten boats are used in vacuum technology.
| Settings | Mass fraction in % | ||||||
|---|---|---|---|---|---|---|---|
| The width and height (mm) | The thickness and length (mm) | Tungsten is not less than | Si and Ni | Al | Ca | Mo | Fe |
| 4.0±0.3;24±1 | 120±2.5;0.6+0.1 | 99.931 | 0.004 | 0.002 | 0.01 | 0.04 | 0.009 |
Application
Tungsten boats are in demand by electrical engineering, electronics, ceramic production. They are indispensable in high-temperature vacuum furnaces, furnaces with hydrogen atmosphere for recovery of oxides of metals, annealing, sintering of powder metals, processing of non-metals, melting glass, growing of monocrystals, etc.
Buy at best price
In stock LLC «AVEK global» — the Big range of tungsten boats. We offer a high quality product at the best prices. Our specialists are ready to answer any questions and to help in the selection of necessary materials, upon request, will provide all the necessary information about the product, cost and delivery time. Rates depend on scope of delivery and additional conditions. For wholesale orders discounts. Buying products of the company «AVEK global», You will find a worthy partner.