Tungsten-nickel-iron alloy (W-Ni-Fe alloy), also known as high-density tungsten alloy, is a composite material with tungsten as the primary component and nickel and iron as binding phases. Typically containing over 90% tungsten, with the remainder a mixture of nickel and iron (e.g., typical ratios like 95W-3Ni-2Fe or 93W-5Ni-2Fe), this alloy is valued for its high density (16.5-18.5 g/cm³), high strength, corrosion resistance, and good machinability, finding wide use in defense, aerospace, medical, and industrial fields. The question raised by users concerns whether this alloy exhibits magnetic properties.

Tungsten alloy collimator is a radiation control device designed using high-density tungsten alloy materials, with its core function being to limit the direction and range of radiation propagation through physical structures. It is widely used in medical, industrial, and scientific fields.

Tungsten alloy collimators, primarily composed of tungsten with nickel, iron, and other elements, exhibit density characteristics surpassing those of collimators made from other materials, giving them a significant advantage in radiation shielding and wide application in the medical field. The application advantages of tungsten alloy collimators include strong radiation shielding capability, excellent radiation durability, environmental friendliness, and superior chemical stability.

The rise in tungsten prices has an uneven impact on various segments of the industrial chain, presenting a "smile curve":