Applications

Balance & Vibration Control

Materials

WHA

Advantages

Our high-density balance weights are compact products ideal for applications where space is at a premium. Based on tungsten heavy alloys (WHA) with densities over 60% higher than lead, our balance weights empower manufacturers with small-form ballast for maximum weight in the smallest space. This allows for greater positioning flexibility and overall improvements in confined space utilization.

 

Application

Our tungsten heavy alloy balance weights are ideal for fine balancing and vibration control in aerospace engineering. Manufactured from the highest quality tungsten heavy alloys, our balance weights offer a non-corrosive, high-density solution to both commercial and military aircrafts. Flight control systems, rotor, and propeller blades, center of gravity adjustments, and more; Elmet Technologies (formerly H.C. Starck Solutions) delivers custom-built parts for various critical components in fixed and rotary-wing aircraft.

Market Segment

The needs of three key market segments are served by our high-performance tungsten balance weights: aerospace, defense, and industrial processing. At Elmet Technologies (formerly H.C. Starck Solutions), we understand the differing objectives and critical to quality parameters of manufacturers and process engineers in these diverse market areas. Consequently, we engineer our balance weights using a choice of tungsten alloys from two world-recognized material families (Kulite® and HPM Tungsten).

Decades of refractory metals expertise stand behind our manufacturing of exceptional quality balance weights for all applications across the aerospace and defense industries, as well as industrial processing sectors.

Materials

Tungsten heavy alloy (WHA) is the perfect material for high-density objectives. H.C. Starck Solutions has decades of expertise in working refractory metals into end-use net shapes that meet critical mass/shape requirements.
Our tungsten balance weights are based on a choice of alloys under the Kulite® and HPM Tungsten brands, with a density range of approximately 17.0 – 18.5 g/cm3. See the table below for a complete breakdown of the tungsten alloys available from Elmet Technologies (formerly H.C. Starck Solutions).
Contact a member of the team today or request a quote for our class-leading tungsten balance weights by filling in the form below.

Related Datasheets

WHA
English
Datasheet

Related Brochures

High Performance Solutions for the Defense Market
English
Brochure
High Performance Solutions for the Aerospace Market
English
Brochure
Tungsten Alloys: Radiation Shielding and High Density Materials
English
Brochure

Request a Quote

Please fill in the boxes on the contact form and a member of the team will contact you directly for a quotation.

Kulite® tungsten alloys

K1700 thru K1850

Alloy Designation
K1700
K1701
K1750
K1800
K1801
K1850
Tungsten Content
(%)
90
90
92.5
95
95
97
Density
(g/cm³)
17
17
17.5
18
18
18.5
(lb/in³)
0.61
0.61
0.63
0.65
0.65
0.67
Hardness
(Rc)
23
22
24
25
24
26
Ultimate Tensile Strength
(psi)
125,000
110,000
125,000
125,000
110,000
120,000
(N/mm²)
860
760
860
860
760
830
Elongation
%
12
4
10
8
2
6
Modulus of Elasticity
(psi x 10⁶)
45
40
46
48
45
50
(kn/mm²)
310
280
320
330
310
345
Magnetic Properties
slight
none
slight
slight
none
slight
Magnetic Permeability
(µ)
>1.05
<1.05
>1.05
>1.05
>1.05
<1.05
Thermal Expansion Coefficient
(x 10 ⁻⁶/K) (20 °C - 500 °C)
5.1
5.4
4.9
4.8
5.0
4.8
Thermal Conductivity
(cgs)
.20
.23
.24
.27
.32
.26
Electrical Conductivity
(% IACS)
11
14
12
15
16
16
MIL-T-21014(D)
class
1
1
2
3
3
4
ASTM B777
class
1
1
2
3
3
4

HPM tungsten alloys

Typical properties of tungsten composite materials

Inspection criterion
HPM 1700
HPM 1710
HPM 1701
HPM 1705
HPM 1750
HPM 1750 sheet
HPM 1751
HPM 1760
HPM 1800
HPM 1810
HPM 1801
HPM 1850
HPM 1850W
Tungsten content
%
90.0
90.0
90.0
90.0
92.5
92.5
92.5
92.5
95.0
95.0
95.0
97.0
97.0
Density
g/cm³
17.0±0.2
17.0±0.2
17.0±0.2
17.3±0.2
17.5±0.2
17.6±0.2
17.5±0.2
17.6±0.2
18.0±0.2
18.0±0.2
18.0±0.2
18.5±0.2
18.5±0.2
Hardness
HV30
≤320
≤320
≤320
≤360
≤325
≤460
≤325
≤325
≤332
≤332
≤332
≤340
≤340
Tensile strength (typical value)
MPa
850
850
670
900
840
870
690
870
830
830
700
830
890
Minimal yield strength
MPa
520
520
520
520
520
520
520
520
520
520
520
520
520
Elongation (typical value)
%
12
12
3
8
14
16
3
16
14
14
2
12
12
Young's modulus (average value)
GPa
320
320
300
330
340
340
330
340
370
370
330
380
380
Median coefficient of linear thermal expansion 20 - 100 °C
10⁻⁶/K
6.1
6.3
6.0
4.5
5.5
5.5
5.7
5.5
4.9
5.2
5.4
5.1
4.8
20 - 300 °C
10⁻⁶/K
6.2
6.5
6.2
5.1
5.7
5.7
5.8
5.8
5.1
5.3
5.5
5.1
4.9
20 - 450 °C
10⁻⁶/K
6.3
6.6
6.4
5.3
5.8
5.8
5.9
5.9
5.2
5.5
5.6
5.2
5.0
Thermal conductivity
W/mK
≥70
≥70
≥90
≥70
≥75
≥75
≥85
≥75
≥80
≥80
≥85
≥75
≥80
Electrical conductivity (average value)
%IACS MS/m
11 6.4
11 6.4
14 8.1
13 7.5
12 6.9
12 6.9
15 8.5
12 6.9
13 7.7
13 7.7
15 9.0
16 9.3
16 9.3
Specific electrical resistance (average value)
µΩm
0.12
0.15
0.14
0.14
0.11
0.10
0.12
0.15
0.14
0.14
0.11
0.10
0.10
Permeability
>1.05
>1.05
<1.05
>1.05
>1.05
>1.05
<1.05
>1.05
>1.05
>1.05
<1.05
>1.05
>1.05
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