Chromium granules
Properties
Chemical symbol: Cr
Name: Chromium granules / granular chromium
CAS No.: 7440-47-3
Molar mass: 52.00 g/mol
Density: 7.19 g/cm³
Bulk density: approx. 3.2-4.2 g/cm³
Particle size: typically 1-10 mm
Purity: often 99.5-99.99%
Melting point: approx. 1907 °C
Boiling point: 2672 °C
Color: silvery gray with metallic luster
Form: granules
Chromium granules are a high-purity, processed form of elemental chromium metal. The material is supplied as silvery-gray metallic granules with a defined particle-size distribution, typically ranging from 1 to 10 mm.
Compared with compact chromium pieces or fine chromium powder, the granular form offers important processing advantages. Its controlled particle size enables accurate dosing in automated alloying, melting and coating systems.
Chromium granules are commonly available in purities ranging from 99.5 to 99.99%. Low levels of oxygen, nitrogen, hydrogen and other impurities are especially important for high-performance alloys requiring strict control of chemical composition.
When exposed to air, the granules rapidly form a stable chromium(III) oxide passive layer. This provides good storage and corrosion resistance. Compared with very fine metallic powder, chromium granules also produce significantly less dust during handling.
Production is mainly carried out by vacuum remelting followed by granulation or atomization, or by mechanical crushing and classification of high-purity electrolytic chromium. The relatively high surface-to-volume ratio supports rapid and homogeneous dissolution in molten metals.
Chromium metal is widely used in advanced metallurgy, and chromium granules are particularly suitable for vacuum alloying, nickel-, cobalt- and titanium-based superalloys, PVD processes, sputtering targets and powder metallurgy. Would you like to buy chromium granules? Auremo can provide information about available particle sizes and purity grades. The chromium price, chromium metal price and chromium price per kg depend on purity, granule size, order quantity and delivery conditions.
Advantages
• Accurate and reproducible dosing
• Suitable for automated feeding systems
• Rapid and homogeneous dissolution in molten metals
• High purity up to 99.99% depending on grade
• Low content of gaseous impurities
• Good corrosion resistance due to surface passivation
• Significantly reduced dust compared with fine metal powders
• Convenient form for metallurgical and vacuum processes
Applications
• Vacuum alloying technology
• Nickel-, cobalt- and titanium-based superalloys
• Aerospace and turbine manufacturing
• Precise alloy adjustment in molten metals
• PVD coating and vacuum evaporation
• Production of pressed sputtering targets
• Thin-film coatings
• Specialty and powder metallurgy
• High-strength tools and shaped components
• Contact components
• Electron-beam evaporation
• Optical and semiconductor coatings
Auremo offers chromium granules and other specialty metals for industrial applications. If you have any questions about purity, particle size, available fractions or delivery conditions, please contact us directly.
