Typical Grades of Tungsten Alloy Radiation Shielding

Tungsten alloys is a best choices for radiation shielding applications, in both medical and industrial settings. Compared to traditional radiation shielding materials, tungsten alloys radiation shield provide excellent value. A high-density alloy can provide the same energy absorption as lead using 1/3 less material. People are taking advantage of tungsten alloy’s reliable radiation shielding properties.
Our tungsten alloys radiation shields are used for radioactive source containers, gamma radiography, shields, and industrial instrumentation. The radiation shielding is also serving as collimators and radiation shielding in cancer therapy, as well as syringe protection for radioactive injections.
Tungsten alloy radiation shield give you best protection from the harmful radiation. Meet to the AMS 21014 and ASTM B777 material standard, we can offer tungsten alloy radiation shields with finished machining by CNC according to clients drawings.
The popular tungsten alloy Material Properties are as below:

Material Chemical Properties	90WNiFe	90WNiCu	92.5WNiFe	95WNiFe	95WNiCu
Density (g/cm3)	17.1	17.0	17.5	18.0	18.0
Hardness (HRC)	25	25	26	27	28
Ultimate Tensile Strength (kpsi)	120	110	115	110	100
Yield Tensile Strength (kpsi)	85	75	80	80	75
Elongation at Break (%)	3	10	7	5	2

Some Details for Tungsten Alloy Radiation Shielding Appliance

Monochromatic Beam Shutters
The thickness of tungsten monochromatic beam shutter need to be evaluated based on monochromatic beam specifications of each beamline. In the monochromatic stations, beam may be stopped on the downstream wall of the experiment station, where the thickness of the downstream wall is greater than or equal to the sum of the combined thickness required of the stop and the downstream wall of the station.
In the case of tungsten integral shutters (white beam stop-mono-beam pass), for the monochromatic beam aperture an offset of 8 mm or more is safe for the external bremsstrahlung ray from the edge of the mono-aperture to minimize the cross talk. For the lead apertures, this offset is 15 mm.

Geologging
Geologging is an exploration technique used mainly in the oil and gas industries. It is also known as wire line logging and borehole logging. A gamma ray source is lowered into a borehole and the radiation penetrates the rock strata. This data can then be analyzed to determine whether deposits of gas or oil are present. Tungsten alloy is used to shield the radioactive source and to act as a collimator for the gamma beam.

Pipe-line inspection Gamma
radiation is used to inspect welds and to detect cracks in pipelines. A gamma source is mounted on a remote-controlled wheeled trolley (sometimes called a "pig") and travels inside the length of the pipe. Tungsten collimator is used to direct the radiation onto the target, whilst the radioactive source is housed inside tungsten shielding.

Industrial radiography
Industrial radiography uses gamma radiation to detect structural faults in materials such as metal and concrete. As pipe-line inspection, the equipment uses tungsten shielding, coupled with a tungsten collimator.
Thickness, density and level gauging radioactive sources are used in industrial processes to measure thickness, density or levels of materials during production e.g. paper, plastic film, steel sheet or surface coatings. The material passes between a radioactive source, which is housed in tungsten alloy, and a detector. The strength of the detector signal is used to measure the thickness, density or level of the material.

Homeland Security and Border Control
The penetrating power of radiation has also been put to use in the fight against terrorism. The Homeland Security industry has designed scanners that use gamma radiation to detect objects in cargo containers or airline baggage.
The radioactive sources are very strong and require tungsten shielding to protect security staff and members of the public from the radiation. A tungsten collimator is also required to direct the gamma radiation onto its target.

Radiation Shielding Used in Cancer Treatment
Tungsten heavy alloys are usually used for the machine needs intensity modulated radiation, which could protect healthy skin tissue during cancer treatment. It could be helpful to save lives through eliminating cancerous cells and protecting the surrounding healthy tissue.