How does tungsten-nickel-iron alloy and pure tungsten compare to processing performance
Release time:
2024-09-11
tungsten-nickel-iron alloy(often referred to as W-Ni-Fe alloys) and pure tungsten have significant differences in physical and chemical properties. The following are some of their main differences:
1. Physical properties
Melting point:
Pure tungsten: about 3422C
tungsten-nickel-iron alloy: The melting point is low, usually between 1300C and 1500C, depending on the composition of the alloy.
Density:
Pure tungsten: density of about 19.25g/cm³.
tungsten-nickel-iron alloy: The density is low, usually between 15-18g/cm³, depending on the composition ratio of the alloy.
Hardness and processability:
pure tungsten: High hardness, difficult machining, because its high melting point and brittleness make it prone to cracks in regular processing.
Tungsten-nickel-iron alloy: relatively soft and easier to process, tungsten-nickel-iron alloy combines the high density and good toughness of tungsten, reducing the difficulty of processing.
2. Chemical properties
Chemical stability:
pure tungsten: It is chemically stable at room temperature and has strong corrosion resistance, but it may react with oxygen to form tungsten oxide (WOL3) in high temperature environment.
Tungsten-nickel-iron alloys generally have good chemical stability, but due to the content of nickel and iron, their chemical stability may be affected, especially in corrosive environments.
Alloying elements:
Pure tungsten: contains only tungsten elements, a single chemical composition.
Inconel: Containing tungsten, nickel and iron, the combination of these elements changes the chemical properties of the alloy, causing it to exhibit different corrosion and oxidation characteristics in some applications.
3. Application areas
Pure tungsten: Due to its high melting point and high density, it is mainly used in high-temperature alloys, electronic equipment, radiation protection materials and filament materials.
Tungsten-nickel-iron alloy: Due to its good processability and low melting point, it is widely used in high-density counterweights, radiation protection materials, and as an important part of tungsten-based alloys.
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