Overview
Iron powder (flake) consists of finely divided iron particles with a flake-like morphology, offering high surface area and reactivity. It is produced via chemical reduction or mechanical milling of iron ores or scrap. The flake form enhances its utility in applications requiring controlled oxidation or magnetic properties. Due to its metallic nature, iron powder is widely used in industries such as metallurgy, where it serves as a raw material for iron-based alloys. Its magnetic properties also make it valuable in electronics and automotive sectors for components like inductors and magnetic shielding.
Physical and Chemical Properties
Iron powder exhibits typical metallic characteristics, including high thermal and electrical conductivity. Its flake structure provides a larger surface area compared to spherical particles, improving reactivity in chemical processes like catalysis or pyrotechnics. The powder is stable under dry conditions but oxidizes in moist environments, forming iron oxide (rust). It reacts exothermically with acids, releasing hydrogen gas. Particle size distribution and purity (often 95-99.5%) are critical quality parameters for industrial buyers.
Main Applications
In metallurgy, flake iron powder is used for powder metallurgy (PM) to produce sintered parts like gears and bearings. Its high purity ensures minimal impurities in final products. The chemical industry employs it as a reducing agent in reactions, such as in the production of iron salts or pharmaceuticals. Magnetic applications include soft magnetic composites (SMCs) for motors and transformers. Additionally, it serves in welding rod coatings, brake pads, and as a nutrient supplement in animal feed due to its bioavailability as iron.
Safety and Storage
Flake iron powder poses flammability risks when dispersed in air, as fine particles can form explosive mixtures. Static electricity must be controlled during handling. Storage requires airtight containers in dry environments to prevent oxidation and moisture absorption. Personal protective equipment (PPE) such as gloves and respirators is recommended to avoid skin contact or inhalation. Spills should be cleaned promptly with non-sparking tools to prevent ignition hazards.
B2B Procurement Guide
When sourcing iron powder, prioritize suppliers who provide material safety data sheets (MSDS) and certificates of analysis (CoA) detailing purity, particle size, and trace contaminants. Bulk purchases (tonnage) typically offer cost advantages, but verify logistics for moisture-proof packaging. For specialized applications (e.g., SMCs), specify parameters like apparent density and flow rate. Compare prices from multiple vendors, factoring in shipping and handling requirements. Spot purchases may suit small-scale needs, while long-term contracts ensure supply stability for large-volume consumers.
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