Refractory Metals
Blance Weights
Tungsten Heavy Alloy (WHA) is particularly useful for balancing applications since its density is far greater than it would be when using other materials, which means less space and less weight is ultimately required. This allows us to take up the absolute minimum of space with the weights, while still achieving the required properties.
Our Tungsten Heavy Alloy balance weights can be manufactured to a wide range of customer requirements, from the tiny, precise tungsten weights in self-winding watches to the massive perfectly-balanced rotors on an aircraft, the unique physical properties of our WHA balance weights and counterweights bring outstanding performance and exceptional quality to ensure the optimum balance for a variety of applications.
Balance weights applications
● Aircraft flight controls, rotor blades
● Watches bobs
● Oil well logging sinker bar
● Race car crankshaft balancing
● Golf clubs
● Mobile phone vibrator
● WHA dart
Advantages of our tungsten heavy alloy
● High density 16.5-18.75 g/cc
● Optimized mechanical and withstand high load
● Low CTE
● High electrical conductivity and thermal conductivity
● Easy to machine and weld
● Good corrosion resistance
● Close tolerance
● Long service life
Technical datasheet for tungsten heavy alloy
|
Tungsten heavy alloy |
W-Ni-Fe |
W-Ni-Cu |
|||||
|
Designation |
90W |
92.5W |
95W |
97W |
90Cu |
92.5Cu |
97Cu |
|
Density (g/cm3) |
17.0 |
17.6 |
18.0 |
18.5 |
17.0 |
18.0 |
18.5 |
|
Tensile Strength (MPa) |
820 |
780 |
820 |
840 |
750 |
650 |
550 |
|
Elongation (%) |
10 |
7.0 |
7.0 |
5.0 |
1.2 |
1.0 |
0.5 |
|
Hardness (HRC) |
25 |
26 |
27 |
28 |
24 |
27 |
28 |
|
Young’s Modulus (GPa) |
310 |
320 |
340 |
365 |
270 |
300 |
320 |
|
Thermal expansion coefficients (10-6/K) |
4.61 |
4.62 |
4.60 |
4.50 |
5.60 |
4.40 |
4.00 |
|
Electrical conductivity (%) |
10 |
13 |
13 |
17 |
17 |
19 |
23 |
|
Thermal conductivity (W/m.K) |
80 |
90 |
93 |
95 |
110 |
120 |
125 |
