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Material: Tungsten Heavy Alloys
Density: 15.8-18.75 g/cm3
Shape: Customized Shapes Tailored Sizes
Applications: Propeller Security Devices, Rivet Rods, Crankshafts, Aviation Use Satellites, Helicopters, Missiles, Gyroscopes, Oil Drills, Gyro Rotors, Azimuth Shafts, Military Shots, Shotgun Cartridges, Golf Counterweights, Prefabricated Fragments, Fishing Pendants, and More
Tungsten alloy blocks are products with conventional shapes, such as squares, rectangles, and other regular forms.
Nickel, titanium, and lead can also be found in square shapes. However, we choose tungsten alloy over these other materials for several reasons. Tungsten alloy offers excellent electrical and thermal conductivity, corrosion resistance, and a high density ranging from 16 g/cm³ to 18.5 g/cm³, significantly higher than that of nickel, titanium, and lead. Additionally, tungsten alloy possesses good mechanical strength, a low thermal conductivity coefficient, a small expansion coefficient, and a large elastic modulus.
In addition to the characteristics mentioned above, tungsten alloy blocks are typically used as ballast weights; extrusion dies; and various counterweight components such as yacht counterweights, automotive counterweights, aircraft counterweights, helicopter counterweights, ship counterweights, and tank counterweights.
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/s*cm*K) | 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 |
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 WHA:
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.