Description of 90WNiFe Tungsten Alloy Weight Bolt

90WNiFe Tungsten Alloy Weight Bolts are often made of tungsten-nickel-iron materials through a powder metallurgy process. They are often combined with nuts, screws, and washers to form fasteners to connect, fix, adjust, transfer force, seal, and protect various equipment. They can also reduce the physical size of components while improving the working efficiency and service life of the equipment.

90WNiFe contains 90% tungsten, while nickel and iron act as binders. It has high density, high strength, low thermal expansion coefficient, good plasticity, and machinability, and plays an important role in many fields.

90WNiFe Tungsten Alloy Weight Bolt can be widely used in aerospace, national defense, and military industry, high temperature processing industry, medical equipment, petrochemical industry, glass fiber processing industry, electronic engineering, and other heavy industries.

Features of 90WNiFe Tungsten Alloy Weight Bolt

1. Ultra-high density (17~18.5 g/cm³)
The density is close to pure tungsten (19.3 g/cm³), much higher than steel (7.8 g/cm³) or lead (11.3 g/cm³), which can provide the maximum counterweight effect in a limited space.

2. High strength and wear resistance
Tensile strength ≥800 MPa, hardness HRC 30~35, wear resistance is better than lead or steel counterweights.

Nickel-iron bonding phase improves toughness and avoids the brittleness problem of pure tungsten.

3. Excellent corrosion resistance
Resistant to seawater, acid mist, and salt mist corrosion, suitable for harsh environments such as ships and offshore platforms.

The surface can be nickel-plated or coated with a protective layer to further improve corrosion resistance.

4. Good machinability (compared to pure tungsten)
It can be turned, drilled, and tapped, but requires carbide tools and coolant lubrication during processing.

Usually supplied in the sintered state, it can also be precision ground to higher dimensional accuracy.

Application of 90WNiFe Tungsten Alloy Weight Bolt

1. Aerospace
Aircraft balancing bolts: used to adjust the center of gravity of the aircraft (such as wing and tail weights), replacing traditional lead weights.

Helicopter rotor balance weights: high density reduces volume and improves aerodynamic efficiency.

Satellite inertial flywheel: provides high moment of inertia and stabilizes satellite attitude.

2. Automotive industry
Racing car weight bolts: accurately adjust the center of gravity of the vehicle to comply with the rules of F1 and other events.

Luxury car vibration damping: reduce engine or chassis vibration (such as Rolls-Royce's silent technology).

3. Industrial equipment
Machine tool dynamic balance block: reduce high-speed spindle vibration and improve processing accuracy.

Vibrating screen/press weights: enhance equipment stability and reduce fatigue damage.

Specification of 90WNiFe Tungsten Alloy Weight Bolt

Grade	90WNiFe
Technique	Cold rolled, Hot rolled, Extruded, Folding, Pressing
Density	17.95g/cm3
Size	M6-M40
Length	Customized
Surface	Black oxide, Zinc Plating, Copper Plating, Polished, Bright
Delivery Time	20 days
Standard	DIN, ANSI, ASTM, GB, JIS

Testing and Quality Control of 90WNiFe Tungsten Alloy Weight Bolt

Dimensional accuracy: diameter tolerance ±0.5 mm (10<Φ≤25 mm), length tolerance ±5 mm (100<Φ≤200 mm).
Nondestructive testing: 100% eddy current testing (ET) + ultrasonic flaw detection (UT) to ensure no cracks and inclusions.
Surface quality: smooth surface, no oxidation color, no cracks, peeling, burrs, spots, and inclusions, etc.

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FAQ for 90WNiFe Tungsten Alloy Weight Bolt

Are you a 90WNiFe Tungsten Alloy Weight Bolt factory or a 90WNiFe Tungsten Alloy Weight Bolt manufacturer?
A: Yes, we are a 90WNiFe Tungsten Alloy Weight Bolt factory, but we generally use our trading company to handle the business abroad. It will be more convenient to receive the remittance and arrange the shipment.

What is the delivery method of 90WNiFe Tungsten Alloy Weight Bolt?
A: Generally, we send 90WNiFe Tungsten Alloy Weight Bolt by UPS, DHL, or FedEx. Also, we can send by sea to a seaport or by air to the closest airport.

Why is your 90WNiFe Tungsten Alloy Weight Bolt so cost-effective?
A: We cut out the middlemen in the end-to-end manufacturing process, and we obtain raw material directly from its source.

Do you do spot quality inspection of 90WNiFe Tungsten Alloy Weight Bolt or full inspection of 90WNiFe Tungsten Alloy Weight Bolt?
A: 100% full inspection for sure. All unqualified 90WNiFe Tungsten Alloy Weight Bolts are discarded.

How do you ensure your lead time for 90WNiFe Tungsten Alloy Weight Bolt?
A: From material preparation to machining and finally to a full inspection. Every stage of production is strictly monitored and controlled to give you an accurate delivery time.

What is the MOQ of 90WNiFe Tungsten Alloy Weight Bolt?
A: Depends on the quantity of 90WNiFe Tungsten Alloy Weight Bolt; generally, no MOQ limit.

How to pay for 90WNiFe Tungsten Alloy Weight Bolt?
A: A bank transfer (T/T) will be acceptable.

What is the delivery time of 90WNiFe Tungsten Alloy Weight Bolt?
A: Around 7-20 days, which depends on the quantity and production of 90WNiFe Tungsten Alloy Weight Bolt.

What kind of package of 90WNiFe Tungsten Alloy Weight Bolt is it?
A: Generally, we use a carton case or plywood case with protective material inside to ensure the safety of the 90WNiFe Tungsten Alloy Weight Bolt.

What is the lead time of 90WNiFe Tungsten Alloy Weight Bolt?
A: From the order placed to cargo receiving will take around 10-25 days.

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