Applications

Balance & Vibration Control

Materials

WCu 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; 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 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 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
WHA Composites
English
Datasheet
WHA Composites (G)
German
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

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    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