Product Description
Ferrochrome is an iron-chromium alloy made by carbothermally reducing chromite ore with coke (reducing agent) and iron ore in ore-smelting furnaces (1,800–2,000°C).
- Alloying Power: Forms stable Fe-Cr solid solutions, boosting steel’s corrosion resistance (e.g., Cr≥12% in stainless steel creates passive film), high-temp strength, and hardness—critical for stainless/tool steels.
- Physical: High melting point (1,600–1,800°C, rises with Cr); hard/brittle (lump/granular, non-forgable); density ~7.1–7.5g/cm³ (mixes well with molten steel).
- Chemical Stability: Resists oxidation at room temp; high-temp forms Cr₂O₃ (2,435°C) to aid deoxidation. Resists weak acids/alkalis—suitable for humid/corrosive conditions.
- Carbon Impact: High-carbon: low-cost, strong deoxidation + alloying. Low-carbon/ultra-low-carbon: ultra-low C (≤0.1%), for premium low-impurity steels (e.g., food/aerospace grades).
Applications
- Steelmaking Industry: Used as a deoxidizer to remove excess oxygen in molten steel, preventing the formation of oxide inclusions and improving steel quality. It also acts as an inoculant in cast iron production to refine the grain structure.
- Alloy Additive: Added to special steels (e.g., high-speed steel, stainless steel) to adjust the content of calcium and silicon, enhancing the steel’s toughness and wear resistance.
- Other Fields: Used in the production of calcium silicide ceramics and as a reducing agent in the extraction of certain rare metals.
Specifications
| Grades | Chemical Composition(%) | ||||
| Cr | C | Si | P | S | |
| HC-FeCr | 4.0-10.0 | 45.0-52.0 | 5.00 | 0.04 | 0.06 |
| MC-FeCr | 0.5-4.0 | 50.0-60.0 | 3.00 | 0.03 | 0.05 |
| LC-FeCr | 0.15-0.5 | 60.0-70.0 | 2.00 | 0.03 | 0.04 |
| Micro-C-FeCr | ≤0.15 | 63.0-75.0 | 1.50 | 0.03 | 0.03 |
| Ultra-LC-FeCr | ≤0.03 | 65.0-72.0 | 1.00 | 0.02 | 0.02 |
