Tungsten: with the most perfect hight temperature resistance performance / Shenzhen Sunrise Metal Industry Co.,Ltd

The melting point of tungsten is up to 3420 º C, and has very good high temperature strength. It also has a very good corrosion resistance towards molten alkali metals and vapor, too. Its own high thermal stability ensures that it can still work in the high-temperature environment.

Basic Characteristics
Chemical symbol: W
        Atomic number: 74
        Atomic weight: 183.85
        Density: 19.254 g/cm3
        Melting point: 3420°C
        Boiling point: 5900°C
        Specific heat capacity: 0.14 kJ/kg x K at 20°C
        Fusion heat: 209 kJ/kg (estimated value)
        Heat conductivity: 129 W/m x K at 20°C
        Heat of vaporization: 444 J/g
        Electrical resistivity: 5.5 μΩ/cm at 20°C
        Temperature coefficient of electrical resistivity: 0.00482 Ω/ΩK
        Superconducting temperature: 0.016

Quality Assurance
Shenzhen Sunrise Metal Industry Co.,Ltd study on refractory metals for decades enables us to fully understand their characteristics and features. We are your best choice as a provider for both pure tungsten and tungsten alloy products. From purchase of raw materials until the final production, we employ the most advanced testing equipment to ensure delivery of flawless and top quality products to you; our experienced technicians can also meet your demanding requirements on product details.

Application

LED lighting, quartz continuous melting, industrial furnace industry, automobile industry, medical industry, security industry, petroleum industry, electronic industry, metallurgy industry, and the field of nuclear power..

High tungsten-based alloys

High tungsten-based alloys are those alloys which are based on tungsten, and a small amount of nickel, iron, copper and other alloying elements of the alloy are added into it, which can enhance the strength and the ductility of pure tungsten, making it easy to machine. They have the characteristics of a high density (~ 18.5g / cm3) and adjustability, the absorption ability of high-energy radiation (1/3 higher than lead-ray absorption coefficient), low coefficient of thermal expansion (4 ~ 6 × 10-6 / ℃), good ductility, high strength and elastic modulus, easy to machine, welding, etc. They have  been widely used in radiation shielding material, weight materials, inertia materials, balancing materials, high temperature molds, anvils, etc.

Our advanced isostatic molding technology is able to produce a large variety of high proportion alloys, shaped pieces. With the technology of extrusion, molding, injection molding, a variety of small products can be produced. And with the technology of forging, extrusion, rolling, we can produce a variety of processing state plates, rods and other parts. Therefore, we can provide domestic and international customers with a variety of grades of alloys with high-density. And the technology of us has reached the international advanced level.

Tungsten copper alloys

Tungsten copper is produced with the selection of fine tungsten and copper powder, and soaked by the first-class sintering refining process. Combined with the advantages of tungsten and copper, it has the characteristics of high temperature resistance, erosion, high strength, heavy, good conductivity, being easy to machine and transpiration cooling. It can be used as electrical contacts, electrodes, for electronic packaging, and in other occasions which require of thermal conductivity properties and high temperature.

We can produce various one-element and two-element tungsten (molybdenum) copper alloys with copper content of 5% -95% according to customer needs by taking different processes. We can also produce a variety of large, shaped products by using isostatic molding process, and a variety of sheets, rods, tubes and small products with different shapes can be produced with compression molding, extrusion molding and injection molding. And with rolling process, a variety of plates and multiple composite plates can be produced.

Tungsten-rhenium alloys

We add 3%, 5%, 25% and 26% of rhenium in tungsten to make tungsten rhenium alloy. Tungsten rhenium alloy has good electrical properties and ductility and workability, and its wire can be used as high-temperature thermocouple wire and the cathode wire.

Tungsten-Molybdenum Alloy

Tungsten-molybdenum alloy is a metal alloy consisting of molybdenum and tungsten. It has excellent resistance to molten zinc corrosion, high melting point, ablation resistance and good resistance to flame erosion of solid particle. With liquid zinc corrosion-resistant performance, molybdenum-tungsten alloys are mainly used for producing some corrosion-resistant parts for liquid zinc temperature measurement tubes, heating electrode pipes, zinc solution pump rotors and zinc-smelting furnace, as well as for production of molybdenum-tungsten alloy crucibles for Sapphire growth.

AT&M Refractory Metal Materials adopts isostatic molding technology to customize various large-sized and special-shaped molybdenum-tungsten products according to customer needs. Currently our main specifications include:

Tungsten lanthanum alloys

Adding 1.0 to 2.0% (mass percentage) of lanthanum oxide into tungsten, the creep resistance of tungsten can be improved, and the recrystallization temperature of tungsten can be increased. Tungsten lanthanum is usually used as lanthanum ion source and electrodes.