ASTM B777-15, Class 1, 2, 3 and 4 Tungsten Heavy Alloy (WHA) Block Counter Weights Machinable Parts

• Customization: Available
• Application: Aviation, Electronics, Industrial, Medical, Chemical, Automotive
• Standard: ASTM
• Model NO.: TC004
• Purity: 90%~97%
• Alloy: Wnife Wnicu Alloys
• Shape: Customized
• Type: Parts
• Grade: 90%-97% Wha
• Density G/Cc: 16.85~17.30, 17.15~17.85, 17.75~18.35, 18.25~18.85
• Supply State: Sintering
• Property: High Temperature Resistance
• Other: High Impact and Crack Resistance
• Dimension Max.: Standard or Customized
• Minimum: According to Customer′s Drawings
• Finshing: Ground, Chemical Cleaned, as Rolled
• Quality: ASTM B 777, AMS-T-21014, Mil-T-21014
• State: Finished and Semi-Finished
• Surface: Remove All Burrs and Break Sharp Edes
• Tolerance: Filler and Corner Radii: +/-0.2 or Other Requested
• Transport Package: Inside Foams and Export Wooden Case or Iron Barrel
• Specification: Customized or As per drawings
• Trademark: Kefeng
• Origin: China
• HS Code: 81019990
• Production Capacity: 5000kgs Per Month

Product Description

Xi'an Kefeng Powder Metallurgy Co., is an ISO Certified and SGS approved Corporation and have been supplying the highest quality High Density Machinable Tungsten Alloys, for over 28 years. Kefeng is the leading global supplier of  custom semi-finished parts and custom grades and custom alloys with 3-4 weeks lead time.

Xi'an Kefeng Powder Metallurgy can supply High Density Machinable Tungsten Alloy custom semi-finished parts from 0.08mm Dia up to 500mm Dia. and square or rectangular custom finished parts from 0.08mm Thk up to 200mm Thickness. If you have any enquiry related to the specification, please contact our courteous sales team to assist you. 

Product Description

High Density Machinable Tungsten Alloy custom sem-finished parts are typically supplied to meet the requirements of ASTM-B-777 Class 1, 2, 3, and 4, MIL-T-21014, AMS-T-21014, AMS 7725 Type 1 and Type 2.  Custom grades available upon request and per customer specifications.

Xi'an Kefeng can supply alloys ranging from 90% to 97% Tungsten and contain nickel, copper and or iron binders for applications where high density and machinability are required. We can supply magnetic as well as non-magnetic Tungsten Alloys.

High Density Machinable Tungsten Alloys typical applications include weights, ballast, balancing rotating systems for aerospace and race cars, boring bars, sinker bars, crank shafts, radiation shielding, medical imaging, high precision tools, darts, lead replacement, collimator, and oil and gas drilling applications.

Characteristics and features

The heavy tungsten alloy material possess the highest melting point of all metals and suitable for very high-temperature applications. It is also characterized by a uniquely low coefficient of thermal expansion and a very high level of dimensional stability.

All our tungsten alloy parts are made produced by a process called powdered metallurgy. This is a technique process where tungsten powder is mixed with nickel, copper (non-magnetic) or iron (magnetic) powder or some other binder elements. It is then compacted and liquid phase sintered. Finally comes in a very high density machinable material having a homogeneous structure with no grain direction. This provides a material with unique applications and physical properties. Parts made from this material are intended for uses such as weights or counter-balances in static or dynamic balancing, high-speed rotating inertia members, radiation shielding, hypervelocity impact, and vibration-damping applications. In selecting the appropriate alloy for a given application, it is important to note that as the tungsten content of the alloy is increased, stiffness, radiation attenuation, and density increase with an accompanying decrease in attainable ductility. These alloys may contain elements that make them magnetic.  When the customer intends to purchase it at an early stae for a non-magnetic alloy needing.  According to the ASTM specification, non-magnetic material is defined as material having a maximum magnetic permeability of 1.05.



Properties

   
   - Low thermal expansion

   - High Density

   - Radiation Absorption

   - High thermal and electrical conductivity

   - High arc resistance

   - Hardness and Wear Resistance
 

Application

As tungsten alloy cubes are small volume with high density, so it can be used in some fields needing the little but heavy parts, like the counter weights of golf club, pinewood derby car, aircraft, helicopter,
vehicle, boat and yacht, especially in precision instrument fields: mobile phone vibrator, clock cube, self-winding watches, anti-vibration toll holders, flywheel weights.

Technical parameters

Tungsten heavy alloy	WNiFe (ASTM B777, AMS-T-21014)				WNiCu (ASTM B777, AMS-T-21014)
Designation	90W	93W	95W	97W	90Cu	93Cu	95Cu
Density g/cm3)	16.85~17.30	17.15~17.85	17.75~18.35	18.25~18.85	16.85~17.30	17.50~17.70	17.75~18.35
Tensile Strength (MPa)	758Min	758Min	724Min	689Min	648Min	648Min	684Min
Elongation (%)	5Min	5Min	3Min	2Min	2Min	2Min	1Min
Hardness (HRC)	32Max	33Max	34Max	35Max	32Max	33Max	34Max
Yield strength(MPa)	517Min	517Min	517Min	517Min	517Min	517Min	634Min