Customers send demands with refractory metals list to refractory metal suppliers, such as product name, quantity, specification, shipping time demands, and whether need third party test.
Official quotation will be sent within 2 working days after receiving the complete inquiry elements required.
The buyer and the seller sign a purchase contract, which specifies the required quantity, specification and delivery time.
The factory starts production after receiving the advance payment from the customer, according to the customer's specific demands.
All products are strictly inspected before leaving the factory, including the content, impurities, size and quantity of products.
Light goods are usually packed in cardboard boxes, refractory metal products are packed in wooden cases, bulk ferro alloys are usually packed in steel drums or ton bags, and minor metals are packed in steel drums.
According to the delivery time required by the customer, book the ship in advance and deliver the goods to the port within the stipulated time.
Elemental semiconductors are semiconductor materials made from a single element. There are mainly silicon, germanium, selenium, etc., with silicon and germanium being the most widely used.
Tantalum is a refractory metal with great biocompatibility, but tantalum has high density and poor mechanical properties. Its biomedical applications include:
1. Cast pure tantalum surgical implant: ASTM F560;
2. Pure tantalum coating:
3. Sutures for plastic surgery and neurosurgery;
4. Radioisotopes for the treatment of bladder tumors.
Superalloys are not only key materials for hot end components such as fuel chambers, guides, turbine blades and turbine disks of aero-engines, and high-temperature components of aerospace rocket engines, but also high-temperature corrosion-resistant components required by industrial gas turbines, energy, and chemical industries. Superalloys are indispensable important materials in the national economy.
The melting point of tungsten is the highest among metals, and its outstanding advantage is that the high melting point brings good high temperature strength and corrosion resistance of the material, and it shows excellent characteristics in the military industry, especially in the manufacture of weapons.
Superalloys have a wide range of applications in the energy field. In high-parameter ultra-supercritical power generation boilers for coal power, superheaters and reheaters must be used with good creep resistance, oxidation resistance on the steam side and corrosion resistance on the flue gas side.
Superalloy pipes with excellent performance; in gas turbines, turbine blades and guide vanes need to use hot-corrosion-resistant superalloys with excellent high-temperature corrosion resistance and long-term structure stability; in the field of nuclear power, steam generator heat transfer tubes must be selected Superalloys with good solution corrosion resistance; in the fields of coal gasification and energy saving and emission reduction, superalloys with excellent high temperature thermal corrosion resistance and high temperature abrasion resistance are widely used; in oil and natural gas mining, especially in deep well mining, drilling tools In the acidic environment of 4-150 ℃, coupled with the existence of CO_2, H_2S and sediment, etc., corrosion-resistant and wear-resistant superalloys must be used.
Another important application of high temperature materials in automotive engines is the turbocharger. The turbocharger uses the exhaust gas discharged from the cylinder to drive the turbine on a diesel engine or an internal combustion engine to increase the pressure of the intake air, thereby increasing the intake air volume and intensifying combustion.
The alloys used in iron and steel plants are the iron alloys required for deoxidizing and alloying the molten steel after tapping.
Rare metals are: germanium, silicon, nickel, etc., mostly used in diodes (germanium, silicon), triode, SCR and temperature controller (nickel).
Refractory metals' most advantages are their strength at high temperatures and with well performance corrosion resistance to molten alkali metals and steam.
Low temperature brittleness
Brittleness occurring during plastic deformation of high melting point metals.High melting point metals such as tungsten, molybdenum, tantalum, niobium, zirconium and hafnium are high temperature materials for atomic energy, aerospace, electric light source, electric vacuum, military and other industrial applications
The high temperature oxidation resistance of metal refers to the resistance of steel to oxidation at high temperature, and it is an important guarantee condition for whether steel can work at high temperature for a long time.
Tungsten has the richest content, the highest melting point and the highest metal density among types of refractory metals.
Molybdenum is the most commonly used refractory metal, because it is cheaper than most other metals, and after being made into alloy, molybdenum products can resist creep and high temperature very well.
HSG tantalum products have the greatest corrosion-resistant performance among refractory metals.
Niobium, often used with tantalum, is very special and can be easily processed to achieve high elasticity and strength.
Rhenium is the latest discovered refractory metal. It can be found in other refractory metal ores at super-low concentrations.
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