Tantalum crucible
Supplier — AvekGlob Company — offers tantalum crucibles at an affordable price from the manufacturer. The supplier guarantees the timely delivery of products to any address specified by the consumer.
Technical specifications
Tantalum is silver metal, with a characteristic luster, which is distinguished by high corrosion resistance. Tantalum, long recognized for its excellent strength at high temperatures, is also one of the most corrosion-resistant metals with resistance to acid attack, comparable to resistance to glass and platinum. Due to these qualities — strength at high temperatures and excellent corrosion resistance, laboratory crucibles made from tantalum are suitable for various applications.
Urgency of application
Tantalum is inert to most organic and inorganic compounds up to temperatures of about 150 ° C. Tantalum does not lend itself to the influence of liquid metals up to 900 C. On this basis, tantalum crucibles are widely used in electronics, nuclear, aerospace and chemical industries.
Chemical composition
The composition of the metal used for the production of tantalum crucibles as impurities includes the following elements (in thousandths of a percent)
Elements |
99.95% Ta | 99.98% Ta | 99.99% Ta |
99.995% Ta |
| Max | Max | Max | Max | |
| Al | 10 | 5 | 1 | 0.5 |
| Ca | 10 | 5 | 1 | 1 |
| Cl | 3 | 3 | 1 | 1 |
| Co | 10 | 5 | 1 | 0.5 |
| Cr | 10 | 5 | 1 | 0.5 |
| Cu | 5 | 5 | 1 | 0.5 |
| Fe | 50 | 20 | 5 | 1 |
| K | 2 | 2 | 0.4 | 0.1 |
| Li | 1 | 1 | 0.5 | 0.05 |
| Mg | 10 | 5 | 1 | 0.5 |
| Mn | 10 | 5 | 1 | 0.5 |
| Mo | 50 | 20 | 10 | 10 |
| Na | 1 | 1 | 0.4 | 0.4 |
| Nb | 300 | 100 | 100 | 50 |
| Ni | 20 | 10 | 5 | 1 |
| Pb | 5 | 5 | 1 | 1 |
| Si | 10 | 10 | 1 | 0.5 |
| Sn | 10 | 5 | 1 | 1 |
| Ti | 10 | 5 | 1 | 1 |
| V | 5 | 5 | 1 | 1 |
| W | 150 | 100 | 80 | 50 |
| Zn | 5 | 5 | 1 | 1 |
| Zr | 20 | 10 | 5 | 1 |
Physical and mechanical properties
- Density, kg / m 3 — 16400;
- Melting point, 0 С — 3017;
- Specific heat capacity, J / kggrad — 170;
- Modulus of elasticity, GPa — 185.7;
- The limit of temporary resistance, MPa — 900;
- Hardness according to Brinell, HB, not more than — 195;
- Coefficient of thermal conductivity, W / megade — 54.4;
- The coefficient of thermal expansion in the temperature range 20… 100 0 С, μm / deg — 6.5.
Assortment and application features
One of the few exceptions to the overall acid resistance of tantalum is hydrofluoric acid, which easily destroys tantalum. Strong alkalis, oxalic acid and fuming sulfuric acid, as well as any solution containing fluoride ions, should also be avoided.
Supplier — AvekGlob Company — offers to purchase tantalum crucibles in assortment of sizes. Products can be bought at a price formed on the basis of European and world standards of production. Implementation is possible in bulk and retail, for regular customers, a flexible system of discounts operates.