Other Additives

Product Description

Ferrophosphorus is a ferroalloy mainly composed of phosphorus (P) and iron (Fe). Its core use is as a phosphorus additive in metallurgy to adjust the properties of steel or cast iron, and it can also be used as a deoxidizer or alloying agent.

• Composition: Core elements are phosphorus (15%-30%) and iron (≥60%-80%), with impurities like silicon (≤4%), manganese (≤2%), and carbon (≤1%). Higher phosphorus strengthens its ability to adjust metal properties, but excess causes steel cold brittleness.
• Physical: Silver-gray to dark gray solid at room temperature; brittle, easy to break. Melting point: ~1100-1250°C; density: ~6.8-7.2 g/cm³. Insoluble in water, stable at room temperature, but reacts with oxygen/sulfur at high temperatures.
• Metallurgical: Proper addition boosts steel’s hardness, wear resistance, and corrosion resistance. It also has mild deoxidation capacity. Note: Phosphorus reduces steel’s low-temperature toughness, so dosage must be precisely controlled.

Applications

• Steel & Cast Iron:
• Adds to low-alloy structural steel/spring steel to enhance hardness and wear resistance.
• Improves molten iron fluidity, reduces casting shrinkage, and enhances surface finish in gray cast iron.
• Controls phosphorus (≤0.15%) in railway rails/wear-resistant parts to balance hardness and avoid cold brittleness.
• Special Alloys: Used in phosphor bronze/brass production—acts as a deoxidizer for molten copper and improves alloy machinability/corrosion resistance .
• Others: Serves as a phosphorus source for lithium iron phosphate (lithium battery cathode); used in fireworks/signal flares for specific flame effects via phosphorus combustion.

Specifications

Details