Hafnium metal is a shiny silver-gray transition metal with a molecular formula of Hf. It does not react with dilute hydrochloric acid, dilute sulfuric acid and strong alkali solution, but is soluble in hydrofluoric acid and sulfuric acid. At high temperatures,Hafnium can also be directly combined with gases such as oxygen and nitrogen to form oxides and nitrides. Hafnium has a high neutron absorption cross section and can be used as a control material for the reactor.
Hafnium Metal 99.9%
|Hafnium Metal 99.99%||ET-HfM-01|
|Electrical Resistivity||35.1 microhm-cm @ 25°C|
|Heat of Vaporization||155 K-Cal/gm atom at 4602°C|
|Specific Heat||0.035 Cal/g/K @ 25 °C|
|Thermal Conductivity||0.230 W/cm/K @ 298.2 K|
|Thermal Expansion||(25 °C) 5.9 µm·m-1·K-1|
|Vickers Hardness||1760 MPa|
|Young's Modulus||78 GPa|
Health & Safety Information
|Flash Point||Not applicable|
Finished packaging: 50 kg / barrel, 500 kg / tray
Sample packaging: 500 g / bag, 1 kg / bottle
Hafnium is Plasticity, easy to process, high temperature resistant and corrosion resistant. It is an important material in the atomic energy industry. The thermal neutron capture cross section of the crucible is an ideal neutron absorber, which can be used as a control rod and protection device for the atomic reactor. Hafnium powder can be used as a rocket propeller. The cathode of an X-ray tube can be manufactured in the electrical industry. The bismuth alloy can be used as a frontal protection layer for rocket nozzles and gliding re-entry vehicles. Hf-Ta alloys can be used to make tool steels and resistive materials. In the heat resistant alloy, niobium is used as an additive element, for example, an alloy of tungsten, molybdenum or niobium is added. HfC can be used as a cemented carbide additive due to its high hardness and melting point. 4TaCHfC has a melting point of about 4215 ° C and is the compound with the highest melting point known. It can be used as a getter for many aeration systems. The getter removes unwanted gases such as oxygen, nitrogen, etc. present in the system. It is often used as an additive to hydraulic oil to prevent the volatilization of hydraulic oil during high-risk operations and has a strong resistance to volatility.