Physical and Mechanical Properties of Tungsten Alloy

Physical and Mechanical Properties of Tungsten Alloy

Commonly tungsten alloy material mainly includes two series: WNiCu alloy, WNiFe alloy, other tungsten alloy with W-Ni-Cr, W-Ni-Mo, W-Ni-Co and other alloys. The application of these two alloys is wide and attracts people's attention. WNiFe alloys are more widely used due to their better tensile strength and ductility than WNiCu alloys. Followed by WCu, WNiMo, WNiCu. And other tungsten-based tungsten alloy material system, the composition of these tungsten alloy materials, the scope of application is to develop at a rapid rate. 

Tungsten alloy has a series of excellent physical and mechanical properties, mainly in the following nine aspects:

(1) high density - high density tungsten alloy density is generally 6.5-19.0g / cm3, which is equivalent to more than twice the steel density.

(2) high tensile strength - sintered WNiFe high-density alloy tensile strength of 800-1000MPa, hot processing and deformation processing can improve its strength to 1300-1500MPa.

(3) ductile good - WNiFe high-density alloy has a good ductility, Tungsten Alloys the sintered state of the elongation can reach 10% -15% by vacuum or atmosphere dehydrogenation treatment, the elongation can be increased to 20% -30 %.

(4) good ability to absorb radiation - high-density alloy absorption of light than the lead 30% -40%, its stability is better than lead

(5) good electrical properties - WNiCu, Tungsten Alloys WNiFe high-density alloy has good electrical conductivity, corrosion resistance, high voltage and other electrical properties.

(6) good thermal conductivity and low coefficient of linear expansion - the thermal conductivity of the die steel 5, while the linear expansion coefficient of iron or steel only 1 / 2-1 / 3.

(7) good corrosion resistance and oxidation resistance.

(8) good weldability - high-density alloys can be steel, silver welding materials for brazing, can be plated.

(9) good machining characteristics - because WNiFe high-density alloy with good ductility, can be car, milling, planing, thread and tapping and other machining, but also for rolling, Tungsten Alloys forging and forging processing Large deformation strengthening treatment.

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