Material Introduction

Tungsten High-Density Heavy Alloy

Material Introduction


Generally, traditional high-density tungsten heavy alloys include tungsten-nickel-iron and tungsten-nickel-copper. This is a high-density tungsten alloy whose density can be adjusted by adding a small amount of nickel, iron, and copper. High-density alloys absorb high-energy rays, and provide low thermal expansion coefficient, good plasticity, high strength and elastic modulus, processability and weldability. They are widely used in radiation shielding materials, counterweight materials, inertial materials, and dynamic balance materials in civilian industries. In military equipment, it is most commonly used to prepare kinetic energy materials for armor-piercing core projectiles.。

We have been engaged in the field of tungsten-based heavy alloys for many years, and our customers can be found all over the world. Over the years, our GWF and GWC series materials have continuously and met customer needs and escorted enterprises along their path to development.

 

Specifications and Performance


Overview of standard material specifications:

Material/Grade

Composition(wt%)

Nominal density/g·cm-3

Magnetism

Corresponding standard grade

(ASTM-B-777)

W

Ni、Fe/Cu

GWF90

90

Others (Ni、Fe)

16.85-17.30

Weak

Class 1

GWF93

93

Others (Ni、Fe)

17.15-17.85

Weak

Class 2

GWF95

95

Others (Ni、Fe)

17.75-18.35

Weak

Class 3

GWF97

97

Others (Ni、Fe)

18.25-18.85

Weak

Class 4

GWC90

90

Others (Ni、Cu)

16.85-17.30

N/A

Class 1

GWC93

93

Others (Ni、Cu)

17.15-17.85

N/A

Class 2

GWC95

95

Others (Ni、Cu)

17.75-18.35

N/A

Class 3

 

Overview of standard material properties:

Grade

Tensile strength/MPa

Yield strength/MPa

Elongation

Hardness

(HRC/Max)

Minimum reference standard

(ASTM-B-777)

GWF90

≥758

≥517

≥5%

32

Class 1

GWF93

≥758

≥517

≥5%

33

Class 2

GWF95

≥724

≥517

≥3%

34

Class 3

GWF97

≥689

≥517

≥2%

35

Class 4

GWC90

≥648

≥517

≥2%

32

Class 1

GWC93

≥648

≥517

≥2%

33

Class 2

GWC95

≥648

≥517

≥1%

34

Class 3

 

Material customization service

We have a highly experienced R&D team. In addition to the above standard materials, we can also improve traditional tungsten alloys according to customer requirements, providing tailor-made solutions for specific applications. Our R&D and production processes run in parallel, ensuring the R&D of new materials can quickly adapt to corresponding production methods and improve efficiency.

For the formulation of special materials, you can inform us of your requirements as follows:

Chemical composition: if you know enough about the material to be used, provide us with the chemical composition of the required material directly; we will carry out material design based on the details you provide.

Physical and mechanical properties: If you do not know much about the material composition, let us know the physical and performance expectations required (for example, material density, thermal conductivity, thermal expansion coefficient, magnetic permeability, strength, elongation, and impact toughness).

Processing characteristics: When the material has special requirements for processing methods, these can be put forward together. We will provide you with a total solution;

Fabrication Process


Using powder metallurgy technology, the preparation of standard materials needs to go through mixing, pressing and liquid phase sintering processes. Each phase of production of tungsten-based high specific gravity alloys is completed in strict accordance with the ISO 9001 quality standard. If the material needs to be further enhanced, we will design the specific process based on the actual performance requirements.

 

Advantage


The tungsten-based high specific gravity alloy boasts many outstanding properties. Its density can reach up to 18.8 g/cm3, while its sintered tensile strength is 700-1,000Mpa; at the same thickness, its ray shielding ability is 1.7 times that of lead; its thermal conductivity is 5 times that of mold steel; the thermal expansion coefficient is 4~6x10-6/℃, only 1/2-1/3 that of iron or steel. This material is widely used in high-end medical applications such as shielding components due to its high density (~18.8g/cm3) and excellent X-ray and gamma ray shielding capabilities; it is widely used as a counterweight component in important fields such as aerospace, automobiles, and nuclear industries because of its high density and good uniformity. This kind of alloy is also widely used in the field of national defense weapons because of its high strength, toughness, good penetration performance and environmental protection characteristics.