Tungsten tube, Molybdenum tube, Tungsten alloy tube
Size: OD(3.5-350)*WT(0.5-50)*L

• High density (up to 65% denser than Lead). 
• Denser materials exist (, pure Tungsten, Gold, platinum group metals) but their use is restricted by availability, workability and cost. 
• Providing mass where volume space is limited. 
• Concentrated weight essential where accuracy is required in placement of mass. 
• Placement of weight in situations where airflow has a significant impact. 

• Possible, either to press components to shape, or to cut and shape material prior to sintering. 
• Reducing the amount of final machining necessary to produce the finished component. 
• Can be machined conventionally and without much difficulty. 

• Blending of tungsten powder with other metal powders and a bonding agent, cooling and sieving. 
• Pressing the blended powder to the required shape (allowing for shrinkage during the final processing), and shaping the green part component. 
• Pre-sintering the pressed components to remove the bonding agent. 
• Final sintering in the hydrogen fed furnace to fuse the powder particles together. 
• Supplied in bar, square, round and rectangle sizes are available in rough oversize, or turned or ground to exact requirements. Components can also be produced to customer drawings. 

Thermal Properties 

• High softening temperature. 
• Low thermal conductivity and low coefficient of expansion gives the material a high resistance to thermal fatigue. 
• Excellent soldering erosion resistance to molten aluminium. 
• Strong at high temperatures with high thermal stability. 

high grade Tungsten high heavy alloy AMST 21014 class 3(another expression)   
        - Material: W90-97NiFe(Magnetic) & W90-97NiCu(Nonmagnetic)
        - Density:16.8-18.8g/cm3
        - Rods Size:dia(1.5 -200) x Length<500mm  
         Plate size: 0.1min Thickness*W*L

Property of tungsten alloy

AMST 21014 class 1
90%WNiFe, 90%WNiCu
Density : 17.0
Hardness: 32HRC max
Elongation: 5-20%

AMST 21014 class 2
92.5%WNiFe, 92.5%WNiCu
Density : 17.2
Hardness: 33HRC max
Elongation: 5-15%

AMST 21014 class 3
95%WNiFe, W95NiCu
Density : 18.0
Hardness: 34HRC max
Elongation: 3-10%

AMST 21014 class 4
97.5%WNiFe, W97.5NiCu
Density : 18.85
Hardness: 35HRC max
Elongation: 1-8%

Mechanical Properties 

• High Young's modulus of elasticity. Does not creep when experiencing significant forces, unlike Lead. 
• Despite their strength, they remain ductile and resistant to cracking. 
• The hardness range of the alloys is typically 20-35 Hardness HRC. 

Tungsten Alloys
EFI Grade	EF17	EF175	EF18	EF185
ASTM B 777-07	1	2	3	4
Weight %  Tungsten	90	92.5	95	97
Nominal Density GM/CC	17.00	17.50	18.00	18.50
Minimum* Ultimate Tensile Strength UTS (KSI)	110	110	105	100
Minimum* Elongation %	5	5	3	2
Modulus of Elasticity (KSI)	45,000	48,000	50,000	52,000

Tungsten high heavy aloy applications:
      - Balancing weights
 
      - Electroheat upsetting anvil block
      - Balls in bomb
      - High voltage electrical contact

Our Standard and safe Packing
     -  paper wrapped the sheets, then plastic paper protected from moisture
     -  Foam board around the the inner wooden case
     -  Standard exported plywood case outside
 
Delivery time: 10-35days as your required qty.

Our relevant tungsten high heavy alloy products and packing photoes,hope you are interested in them