TUNGSTEN GRADES

Wolfmet tungsten alloy is supplied in two ranges – magnetic (HE range) and
non-magnetic (HA range).

HIGH DENSITY

With densities up to 18.5gcm, Wolfmet 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 Wolfmet tungsten alloy grade (HM 490) for hot metal applications, which offers good hot wear resistance.

 

All Wolfmet tungsten alloy 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.

High Density Tungsten
F1 Component

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 AMS7725F. The non-magnetic Wolfmet grades have been proven to be non-magnetic through independent tests.

Grade HA 190 HA 1925 HA 195 HE 390 HE 3925 HE 395 HE 397
Aerospace industry standards
ASTM B777-15 Non-magnetic
Class 1
Non-magnetic
Class 2
Non-magnetic
Class 3
Magnetic
Class 1
Magnetic
Class 2
Magnetic
Class 3
Magnetic
Class 4
AMS7725F Type 1
Class 1
Type 1
Class 2
Type 1
Class 3
Type 2
Class 1
Type 2
Class 2
Type 2
Class 3
Type 2
Class 4
Typical properties* Units
Tungsten Nominal % 90 92.5 95 90 92.5 95 97
Binder Ni/Cu Ni/Cu Ni/Cu Ni/Fe Ni/Fe Ni/Fe Ni/Fe
Nominal
density
g/cm³
lb/in³
17.1
0.62
17.5
0.63
17.9
0.65
17.1
0.62
17.5
0.63
18.1
0.65
18.5
0.67
0.2% proof stress MPa
ksi
675
100
650
95
680
100
645
95
645
95
660
95
660
95
Tensile
strength
MPa
ksi
805
116
830
120
805
116
875
126
900
130
910
131
915
132
Elongation on
25mm (1″)
% 7 9 4 25 27 22 12
Hardness HRC 24 24 24 27 24 24 25

* 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.

Tungsten Alloys Technical Data

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.