Non-Magnetic Tungsten Alloy
Wolfmet tungsten alloys can be manufactured from a range of grades, including
our non-magnetic range – HA.
‘HA’ NON-MAGNETIC TUNSGTEN ALLOY
In specialised applications, low magnetic permeability may be critical. Here, customer can chose a grade from our non-magnetic HA range. HA is defined by a magnetic permeability lower than or equal to 1.05μ.
This ‘HA’ non-magnetic range includes HA 190 (tungsten content of 90%), HA 1925 (tungsten content of 92.5%) and HA 195 (tungsten content of 95%). All these non-magnetic grades have a binder matrix of Nickel (Ni) and Copper (Cu) in solid solution (in which intermetallic phases are possible). Low coercivity can be expected in the region of 0-280 A/m (as sintered).
Both our HA and HE grades of tungsten alloy offer the same benefits in terms of high density and attenuation.
SPEAK TO AN EXPERT ABOUT YOUR NEXT PROJECT
Non-Magnetic Tungsten Alloy Applications
MRI-Compatible Components
Instruments
Watch Making
Shielding Electrical Sensors
Rotating Inertial Rotors
Case Study:
MRI employs a strong magnetic field, the magnetic field extends beyond the machine and exerts very powerful forces on iron, some steels, and other magnetisable objects. It is reportedly strong enough to fling a wheelchair across the room.
Recent developments in molecular imaging have seen the evolution of scanners which can perform simultaneous MRI and PET scans. This combines images of soft tissue (MRI) with images of the metabolic processes of organs at the molecular level (PET).
As PET requires the patient to be injected with a radioactive form of glucose, nursing staff have to be protected against long term exposure to radiation during transportation of the syringes, as well as physically safe when in close proximity to the MRI scanner.
As the syringes and containers are in the same room as the MRI scans it is critical that they are MRI compatible.
The Wolfmet team were approached to manufacture an MRI-compatible tungsten box for transporting syringes. The box would carry shielded syringes into the MRI room for MRI-PET scans. The customer had chosen tungsten alloys because of its radiation shielding properties, but they selected our HA 195 grade specifically because it was non-magnetic and would not cause a problem with regards the MRI scanner. The non-magnetic tungsten alloy box can be seen above.
To read more about the different tungsten alloy grades available please visit tungsten grades.
To talk to an expert or to receive a quote please Tel: +44 161 864 5449 or e-mail: [email protected]
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Copyright © 2000-2025 M&I Materials Ltd.