Custom WNiCu Alloy Parts

At MetalsTek Engineering, we specialize in producing custom Tungsten Nickel Copper (WNiCu) alloy parts tailored to various industries’ specific needs. WNiCu alloys are ideal for applications requiring durability and precision because of their exceptional strength, high density, and excellent machinability.

Custom WNiCu Tungsten Heavy Alloy Parts

Material: Tungsten Nickel Copper Alloy, W-Ni-Cu

Composition: W 85~99%, Can be Customized

Density: 16.8-18.75 g/cm³

Size Range: Tailored Shape and Size per Drawing

Application: Military Industry, Counterweight, Radiation Shielding, Dart Rod, Welding Rod, Mold

What is WNiCu Alloy?

WNiCu alloy is a composite material made primarily of tungsten (W), nickel (Ni), and copper (Cu). This unique combination provides several advantages:

High Density: Ranging from 16.9 g/cm³ to 18.8 g/cm³, making it suitable for counterweights and other applications where space is limited.
Excellent Mechanical Properties: Yield strength can reach up to 690 MPa, with ultimate tensile strength values around 800 MPa.
Corrosion Resistance: Offers good resistance to various chemical environments, enhancing longevity in demanding applications.
Low Thermal Expansion Coefficient: Ensures dimensional stability under varying temperature conditions.

Customization Options

At MetalsTek Engineering, we offer extensive customization options for WNiCu alloy parts:

Dimensions: Custom sizes available, including rods, blocks, and complex geometries.
Alloy Composition: Tailored compositions to meet specific mechanical and physical property requirements.
Finishing Options: Various surface treatments available to enhance performance characteristics.

Why Choose MetalsTek Engineering?

Choosing MetalsTek Engineering for your custom WNiCu alloy parts means you benefit from:

Expertise: Our team has extensive knowledge in tungsten alloys and their applications.
Quality Assurance: We adhere to strict quality control measures to ensure every part meets industry standards.
Rapid Turnaround: Efficient production processes allow us to deliver your custom parts quickly without compromising quality.

Features of Tungsten Heavy Alloys

High Density
High Melting Point
Good Machining Properties
Good Mechanical Properties
Small Dimensions
High Hardness
High Ultimate Tnesile Strength

Easy Cutting
High Elastic Modulus
Non-Poisonous, No Pollution
Strong Corrosion Resistance
Effective Absorption of X-rays and Gamma Rays (30-40% Higher Absorption Efficiency Than Lead)

Tungsten Heavy Alloy Properties

ASTM B777 (MIL-T-21014 / SAE-AMS-T-21014) is a standard specification for Tungsten Heavy Alloys (WHA). The specification is organized into four classes (1-4). Each categorization or classification represents a percentage amount of Tungsten (W) Alloy.

Class 1: W 90%

Class 2: W 92.5%

Class 3: W 95%

Class 4: W 97.5%

Tungsten Heavy Alloy Grade	WHA-17C	WHA-17F	WHA-175	WHA-18C	WHA-18F	WHA-185
ASTM B777; AMS-T-21014 Class	Class 1		Class 2	Class 3		Class 4
Type	Type II & III	Type II & III	Type II & III	Type II & III	Type II & III	Type II & III
AMS 7725C	Type 1	Type 2
Alloy Composition	90WNiCu	90WNiFe	92.5WNiFe	95WNiCu	95WNiFe	97WNiFe
	90% W	90% W	92.5% W	95% W	95% W	97% W
	6% Ni	7% Ni	5.25% Ni	3.5% Ni	3.5% Ni	2.1% Ni
	4% Cu	3% Fe	2.25% Fe	1.5% Cu	1.5% Fe	0.9% Fe
Density (g/cm³)	17	17	17.5	18	18	18.5
Density (lbs/in³)	0.614	0.614	0.632	0.65	0.65	0.668
Hardness (HRC)	24~32	25~32	26~32	27~34	27~34	28~35
Tensile Strength (PSI)	≥94,000	≥110,000	≥110,000	≥94,000	≥105,000	≥100,000
Yield Strength (PSI) 2% OFFSET	≥75,000
Elongation, % in 1”	>2	>5	>5	>2	>3	>2
Proportional Elastic Limit (PSI)	45,000	52,000	46,000	45,000	44,000	45,000
Modulus of Elasticity (PSI)	40 x 10⁶	45 x 10⁶	47 x 10⁶	45 x 10⁶	50 x 10⁶	53 x 10⁶
Coefficient of Thermal Expansion x 10E^-6/°C (20°- 400°C)	5.4	4.8	4.6	4.4	4.6	4.5
Thermal Conductivity (cal/scmK)	0.23	0.18	0.2	0.33	0.26	0.3
Electrical Conductivity (%IACS)	14	10	13	16	13	17
Magnetic Properties	NIL	Slightly Magnetic	Slightly Magnetic	NIL	Slightly Magnetic	Slightly Magnetic

Tungsten Heavy Alloy Applications

There are many different ways to use Tungsten heavy alloy (WHA). Mostly, we provide WHA parts for ballast weights, radiation shields, boring bars, ordnance components, and other things that need to be really heavy and flexible.

WHA is commonly used in various applications, such as counterweights, inertial masses, radiation shielding, and ordnance products. It is preferred for its strength, density, and weight, making it suitable for applications that require balance weights, such as turbines, crankshafts, and helicopter rotors.

WHA is also used in commercial and military aircraft, spacecraft, defense vehicles, transportation systems, warheads, munitions, and fragmentation.

In the medical industry, WHAs are used for X-ray shielding in applications such as CT and imaging technologies, nuclear medicine shielding, and surgical robots. The alloying of tungsten allows for the production of complex shapes and forms needed for critical medical devices and technologies.

Below are the typical uses of WNiCu WHA:

Used as a counterweight, bucking bar, balance hammer
Used in radiation shielding device
Used in the manufacture of aerospace and aerospace gyroscope rotors, guide, and shock absorbers
Used in machinery manufacturing die-casting mold, tool holder, boring bar, and automatic watch hammer
Used in conventional weapons with armor-piercing missile
Used in electric products with riveting heads and switch contacts
Used for anti-ray shielding components

Packaging

Our Tungsten Heavy Alloy products are meticulously tagged and externally labeled, ensuring both efficient identification and rigorous quality control. We prioritize utmost care to prevent any potential damage that may occur during storage or transportation.

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