Heavy alloys

Outline

Heavy alloy is the generic name for tungsten-based, high-density alloy and contains nickel, copper and iron as additives for homogeneous sintering. The alloy material is classified according to composition, or tungsten content (90%–96%) and the sorts of additive. The alloy is widely used as the key material for nuclear devices because it excels in mechanical properties, radiation-shielding properties and thermal resistance. Unlike pure tungsten material, heavy alloy is easily machined and precision finished by turning, milling, boring, threading and grinding.

Advantages

High density
Excellent mechanical properties such as high vibration-damping capacity and high Young's modulus.
Excellent radiation-shielding property
High thermal conductivity with low thermal expansion coefficient
Higher high-temperature strength and thermal shock resistance
High oxidation resistance and corrosion resistance

Applications

X-ray devices both for medical and industrial use
Radiation-shielding components for gamma-ray devices
Isotope containers
Vibrator balances for cellular phones
Flywheels
Parts for die-cast dies
Electrodes
Heat treatment furnace jigs

FAQ

FAQ on tungsten and molybdenum

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