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Tungsten Heavy Alloy (WNiFe, WNiCu, WNiCo)
Tungsten heavy alloy is mainly made up of tungsten, with a tungsten content ranging from 85% to 97%. It is strengthened by adding materials like Ni, Fe, Cu, Co, Mo, and Cr. This alloy has a density between 16.8 and 18.8 g/cm³. we have two series of products: WNiFe, WNiCo (magnetic), and WNiCu (non-magnetic). We manufacture large tungsten heavy alloy parts using CIP, while small parts are made through mold pressing, extruding, or MIN. We also offer a wide range of high-strength plates, bars, and shafts produced by forging, rolling, or hot extruding. We can create different shapes based on customer drawings, provide design technology processes, and develop various products. Additionally, we offer post-machining services to meet our customers’ needs.
Applications of Tungsten Heavy Alloy (WNiFe, WNiCu, WNiCo)
• Military equipment
• Balance weight for submarine and vehicle
• Aircraft components
• Nuclear and medical shields (military shield)
• Fishing and sport tackles
Properties of Tungsten Heavy Alloy (WNiFe, WNiCu, WNiCo)
| Alloy | -17C | -17F | -175 | -18C | -18F | -185 |
| ASTM B777; AMS- T-21014 Class |
Class 1 | Class 1 | Class 2 | Class 3 | Class 3 | Class 4 |
| Material | 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, grams/cubic centimeter | 17 gm/cc | 17 gm/cc | 17.5 gm/cc | 18 gm/cc | 18 gm/cc | 18.5 gm/cc |
| Density; lbs/in3 | 0.614 | 0.614 | 0.632 | 0.65 | 0.65 | 0.668 |
| Mil. Spec. T-21014 D | Class 1 | Class 1 | Class 2 | Class 3 | Class 3 | Class 4 |
| ASTM-B777 | Grade 1 | Grade 1 | Grade 2 | Grade 3 | Grade 3 | Grade 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 | ||||
| Hardness; Rockwell C | 24 (32 max) | 25 (32 max) | 26 (33 max) | 27 (34 max) | 27 (34 max) | 28 (35 max) |
| Ultimate Tensile Strength; PSI, min. | 94,000 | 110,000 | 110,000 | 94,000 | 105,000 | 100,000 |
| Yield Strength, .2% Offset; PSI, min. | 75,000 | 75,000 | 75,000 | 75,000 | 75,000 | 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 10^6 | 45 x 10^6 | 47 x 10^6 | 45 x 10^6 | 50 x 10^6 | 53 x 10^6 |
| 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 |
Tungsten Heavy Alloy Products list
Tungsten Heavy Alloy Rods
Diameter: Ф3.0-100.0mm
Length: 50-1000mm
Density: 15.8-18.75 g/cm3
Composition: W content: 85-99%, WNiFe, WNiCu
Applications: Used for the counterweight, radiation shieldings, military industry, dart rod, welding rod, and mold.
Tungsten Heavy Alloy Slugs
Applications:
Used for automobile, vehicle weight balance, oil drilling machine counterweight, helicopter weight, ship weight, and tank counterweight.
Tungsten Heavy Alloy Bars
Width x length: (2.0-100.0mm) x (2.0×100.0mm)
Height: 50-1000mm
Density: 15.8-18.75g/cm3
Applications: Used as a counterweight on aircraft surfaces control, propeller, navigation station, the engine, and engine crankshaft.
Tungsten Heavy Alloy Blocks
Applications: Can be made into weapon parts, molds, and counterweights, also widely used in the medical field, such as shielding walls and shielding blocks on the CT device.
Tungsten Heavy Alloy Plates
Applications: Used as counterweights in various fields, such as the mechanical hammer, flyweight, oil drilling platform counterweight, and shockproof tool holder. They can also be used for the X-ray target, collimator, nuclear fuel container, and needle shielding.
Tungsten Heavy Alloy Balls
Applications: Used as golf counterweight, fishing pendants, military shots, shotgun cartridges, prefabricated fragments etc. They can also be used in some other top precision fields, such as mobile phone vibrators, the pendulum for the clock, automatic watch balance, shockproof knife tools, and flywheel weight.
Tungsten Heavy Alloy Discs
Applications: Used as a counterweight, radiation shielding, military, and other fields.
Tungsten Heavy Alloy Rings
Applications: Used as counterweight in various fields.
Tungsten Heavy Alloy Pipes
Applications: Best material for radiation shielding, which can also be used for clock pendulum, automatic watch balances, shockproof knife tools, flywheel weight, etc.
Tungsten Heavy Alloy Sheets
Applications: Widely used in radiation shielding materials, as well as packing materials and cables.
Low Tungsten Alloy
Low tungsten alloy refers to that the tungsten content is less than 90%. Primarily used in special industries as a counterweight. We produce various low-density tungsten alloy products based on customer requirements.
Tungsten Alloy Shielding Parts
Tungsten alloy shielding parts are the first choice for radiation shielding. It can be used in the medical field and industrial field. Compared with the traditional shielding materials (such as lead), the tungsten alloy’s shielding function is much better than others. Due to its high-density, the volume of tungsten alloy is 1/3 smaller than lead, but the shielding function is equivalent. These are also used as collimators, shields for radiotherapy, and springe shields.
Tungsten Alloy CT Shielding
Applications: Mainly used in medical areas, PET shielding injection, tungsten alloy protective pot, deoxyribose (FDG) container, and the camera detector.
Tungsten Alloy Shielding Sheets
Applications: Used in shielding walls, floor shielding materials, shielding windows for spacecraft, shielding blanket, and shielding cover of radioactive nuclear waste.
Tungsten Alloy X Ray Target
Applications: Used in X-ray target firmware, rotator, fixed anode, cathode element, and detector element.
Tungsten Alloy Collimator
Applications: Used as linear accelerators and cyclotrons in the medical field.
Tungsten Alloy Counterweight
Tungsten alloy counterweight has many advantages like high-density, high melting point, high hardness, strong corrosion-resistance, high ultimate tensile strength, high elongation, easy cutting, non-poisonous, no pollution, good impact resistance, and crack resistance. These are widely used in various fields.
Tungsten Alloy Aircraft Counterweight
Applications:
Used as a failure of security devices to prevent the propeller speed too fast on the propeller control system. The rivet rod and crankshaft balance pieces can also be used on the satellite, and the aircraft counterweight helps satellite gravity set precise positioning and ensures its correct flight track.
Tungsten Alloy Counterweight for Aviation
The counterweight can be used in satellite, the helicopter rotor, missile, and aviation electronic equipment on the gyroscope.
Tungsten Alloy Counterweight for Oil Drilling
Applications: Widely used in oil drilling, which is drill bits, and counterweight made for professional drilling engineering.
Tungsten Alloy Gyro Rotor
Tungsten alloy gyro rotor is a key part of the aircraft heading gyroscopes. Its structure mainly includes the azimuth gyro, gyroscope rotor, the outer shaft (azimuth shaft) that supports the vertical through a bearing in the instrument shell.
Tungsten Alloy Balls for Counterweight
Applications: Used for variable pitch propellers of the pitch control system on the aircraft as the failure of security devices to prevent the propeller speed much too fast.
Advantages of Tungsten Heavy Alloy (WNiFe, WNiCu, WNiCo)
• High density
• High melting point
• Good machining properties
• Good mechanical properties
• Small volume
• High hardness
• High ultimate tensile strength
• Easy cutting
• High elastic modulus
• It can effectively absorb X-rays, and gamma rays (the absorption of X-rays and Y rays is 30-40% higher than lead)
• Non-poisonous, no pollution
• Strong corrosion resistance
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