Description

Chromium CAS NO 7440-47-3 is a lustrous, hard, brittle transition metal essential for numerous industrial processes and alloy production. Its primary commercial value lies in its ability to impart hardness, corrosion resistance, and a decorative finish to materials. This product is critical for manufacturers in the metallurgical, chemical processing, refractory, and surface finishing industries seeking to enhance material performance and durability.

Application

• Stainless Steel & Superalloy Production: A key alloying element to enhance hardness, tensile strength, and corrosion resistance.
• Electroplating & Surface Finishing: Used for decorative chrome plating (nickel-chromium) and hard chromium plating for wear resistance on industrial parts.
• Refractory Materials: A component in chrome magnesite bricks for high-temperature furnaces, such as those used in steelmaking.
• Chemical Catalyst: Employed in various catalytic processes, including the production of synthetic fuels and certain polymers.
• Pigments & Dyes: Source for chromium compounds like chromium oxide (green pigment) and lead chromate (yellow/red pigments).
• Leather Tanning: Chromium(III) salts are widely used in the tanning process to produce stable, durable leather.
• Metal-Ceramic Composites: Used in the manufacture of cermets for cutting tools and high-temperature components.

Basic Information

Product Name	Chromium
CAS No.	7440-47-3
Molecular Formula	Cr
Molecular Weight	51.996 g/mol
Synonyms	Chrome; Chromium Metal; Chromium(0); Chromium Powder; Electrolytic Chromium; Chromium Flake; Chromium Granules; Chromium Lump
EINECS	231-157-5

Quality Control

Our chromium metal is produced and handled under strict quality management protocols to ensure batch-to-batch consistency and purity. We provide comprehensive Certificates of Analysis (COA) detailing key parameters such as assay (Cr content) and trace metal impurities. Our quality systems are designed to meet the rigorous demands of the alloy and chemical industries, with specifications adjustable to align with customer-specific requirements.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong acids and strong oxidizing agents. For powder forms, store under an inert atmosphere (e.g., argon or nitrogen) to minimize surface oxidation. Keep container tightly sealed when not in use to prevent contamination and moisture absorption.

Specification

Item	Specification
Appearance	Silver-gray metallic solid (lump, powder, or flake)
Identification (XRD)	Conforms to standard
Assay (Cr content)	≥ 99.0% - 99.95%
Iron (Fe)	≤ 0.05% - 0.5%
Silicon (Si)	≤ 0.01% - 0.1%
Aluminum (Al)	≤ 0.01% - 0.1%
Oxygen (O)	≤ 0.05% - 0.5%
Nitrogen (N)	≤ 0.01% - 0.05%
Particle Size (for powder)	Customizable (e.g., -100 mesh, -325 mesh)

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.