GB/T19001 High Temp Resistant Hafnium Nuts Fasteners

Hafnium Nut Hafnium Fasteners Hafnium Precision Parts Hafnium Parts 

Hafnium chemical properties and zirconium is very similar, with good corrosion resistance, not easy to be eroded by general acid and alkali aqueous solution; Easily soluble in hydrofluoric acid to form fluorine complex. Under high temperature, hafnium can also be directly combined with oxygen, nitrogen and other gases to form oxides and nitrides. The crustal abundance of hafnium is greater than that of the common metals bismuth, cadmium, mercury, and comparable to that of beryllium, germanium, and uranium. Hafnium is found in all minerals that contain zirconium. There is also a metamorphic zircon cyrtolite that contains more than 5% HfO. The latter two minerals are scarce and have not been adopted in industry. Hafnium is recovered mainly from the production of zirconium. Hafnium is useful, e.g. as a filament in an incandescent lamp, because it readily emits electrons. Alloys of hafnium and tungsten or molybdenum are used as the electrodes of high voltage discharge tubes. Commonly used as cathodes for X-ray and tungsten filament manufacturing industries. Pure hafnium with plasticity, easy processing, high temperature resistance and corrosion resistance, is an important material for atomic energy industry. Hafnium is an ideal neutron absorber with large thermal neutron capture cross-section and can be used as control rod and protection device in atomic reactor. Hafnium powder can be used as propellers for rockets. Cathodes for X-ray tubes can be manufactured in the electrical industry. Hafnium alloy can be used as rocket nozzle and glider re-entry aircraft front protection layer, HF-TA alloy can be manufactured tool steel and resistance materials. Hafnium is used as an added element in heat-resistant alloys, such as tungsten, molybdenum, tantalum, and some added hafnium in alloys. HfC can be used as carbide additive because of its high hardness and melting point. The melting point of 4TaCHfC is about 4215℃, which is the highest known compound. Hafnium is used as a getter in many aerating systems. Hafnium getter can remove oxygen, nitrogen and other unnecessary gases in the system. Hafnium is often used as an additive in hydraulic oil to prevent the volatilization of hydraulic oil in high-risk operations. It has strong anti-volatilization, so it is generally used in industrial hydraulic oil. Medical hydraulic fluid.
Nut is nut, screw together with bolt or screw used for fastening parts, all production and manufacturing machinery must use a component according to the different material, divided into carbon steel, stainless steel, non-ferrous metals (such as copper) and other major types.

Features:
plasticity
Easy processing
High temperature resistant
Corrosion resistant