Tungsten grades

We supply Wolfmet tungsten alloy in two ranges – magnetic (the HE range) and non-magnetic (the HA range). With densities up to 18.5gcm, these grades are the prime choice for adding balance weights, ballast or vibration damping mass where space is limited.

The high density of Wolfmet tungsten alloy also delivers effective radiation shielding particularly against X-ray and gamma radiation.

We also provide a specialist grade (HM 490) for hot metal applications which offers good hot wear resistance.

All Wolfmet grades are reasonably corrosion resistant in both acid and alkaline environments and can easily be plated or painted if necessary. They are easy to clean, non-toxic and non-radioactive.

Magnetic tungsten alloy
Manufactured with a binder of iron and nickel, our magnetic alloys have a tungsten content of 90-97% by weight. These are suitable for many situations where a high density material is required.

Non-magnetic tungsten alloys
For non-magnetic alloys, copper and nickel are the binding agents, with a tungsten content in the range of 90-95%. These non-ferromagnetic alloys are used in a variety of applications, including medical scanners.

Technical data
Wolfmet tungsten alloy conforms to the internationally recognised standard ASTM B777-15 and AMS 7725E the Aerospace Materials Specification. The non-magnetic Wolfmet grades have been proven to be non-magnetic through independent tests.

Grade HA 190HA 193HA 195HE 390HE 3925HE 395HE 397
Aerospace industry standards
ASTM B777-15Non-magnetic class 1Non-magnetic nominal class 2Non-magnetic class 3Magnetic class 1Magnetic class 2Magnetic class 3Magnetic class 4
AMS 7725EType 1 class 1Type 1 nominal class 2Type 1 class 3Type 2 class 1Type 2 class 2Type 2 class 3Type 2 class 4
Typical properties*Units
TungstenNominal %9093959092.59597
BinderNi/CuNi/CuNi/CuNi/FeNi/FeNi/FeNi/Fe
Nominal densityg/cm3
lb/in3
17.1
0.62
17.6
0.64
17.9
0.65
17.1
0.62
17.5
0.63
18.1
0.65
18.5
0.67
0.2% proof stressMPa
ksi
675
100
650
95
680
100
645
95
645
95
660
95
660
95
Tensile strengthMPa
ksi
805
116
830
120
805
116
875
126
900
130
910
131
915
132
Elongation on 25mm (1")%79425272212
HardnessHRC24242427242425

*Properties may vary according to size and shape of part and production conditions. Figures shown are rounded and are typical for coupons (to fig.19 of ASTM E8) measured in accordance with ASTM B777-15; they are offered without warranty or guarantee. Values may be altered without notice and do not constitute a specification and should not be used for design purposes without reference to M&I Materials Ltd. It is for the customer to satisfy itself of the suitability of the products for its own particular purposes and environmental conditions.

Download Wolfmet Tungsten Alloys Technical data

Wolfmet tungsten alloys can be used in a variety of applications including radiation shielding, balancing, ballast and anti-vibration devices.

To find out more, click download or contact us today.