Metallurgical Coke
Fully carbonized, non-melting carbon engineered for metal casting, friction, and industrial performance applications
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Metallurgical Coke Materials
Fully carbonized, non-melting carbon engineered for metal casting, friction, and industrial performance applications.
Metallurgical Coke, commonly known as Met Coke, is a high-strength, carbon-rich material produced through the carbonization of bituminous coal. Tough, resilient, and thermally stable, met coke is used in applications ranging from metal casting and carbon raising to friction materials and anti-corrosion systems.
Metallurgical Coke (Met Coke)
Metallurgical coke is manufactured through the destructive distillation (carbonization) of carefully selected blends of bituminous coal in vertically oriented coke ovens. During this process, volatile components, including coal tar, ammonia, hydrocarbons, and other decomposition products, are driven off, leaving behind a dense, non-melting carbon structure.
Bituminous coal serves as the parent carbon of metallurgical and foundry coke. This naturally occurring mineraloid falls between soft coal and anthracite in its degree of geological carbonization. Bituminous coal is high in volatile content (approximately 40–60%) and exhibits strong hydrocarbon character. When heated, it passes through plastic and liquid phases before solidifying into coke.
The resulting metallurgical coke is a fully carbonized material with little to no residual hydrocarbon character. Unlike its coal precursor, met coke does not melt, soften, or flow at elevated temperatures.
Typical product specifications include:
- Charge Carbons: 85 – 92%
- Particle Size Range: 1/2” – 20μm
Properties
Major Carbon Properties
Metallurgical coke provides high carbon content and structural integrity for demanding thermal and metallurgical environments.
- Very low volatile matter
- Fully carbonized, non-melting structure
- High mechanical strength and toughness
- Electrically conductive
- Excellent thermal stability
- Low residual hydrocarbon character
- Non-explosive in powdered form (unlike bituminous coal)
- Available in a wide range of particle sizes
Applications
Metallurgical Coke Applications
Met coke is used in applications requiring structural carbon, reduction capability, and thermal stability.
Casting & Foundry
Used in furnaces and melting operations as a carbon source. Often added to molten iron and steel to control chemistry and improve metallurgical properties.
Friction Materials
Provides wear resistance and performance stability in brake linings and industrial friction systems.
Cathodic Protection
Used where durable carbon materials are required for electrical conductivity and chemical resistance
Coatings
Used in coatings as a durable filler to help improve thermal stability, wear resistance, conductivity, and surface protection in demanding industrial applications.
How It Works
Parent Material: Bituminous Coal
Bituminous coal is the precursor to metallurgical coke. It is characterized by:
- High volatile and hydrocarbon content
- Ability to form plastic and liquid phases when heated
- Tendency to form explosible mixtures with air when finely milled
When carbonized in coke ovens, these volatile and hydrocarbon components are driven off, transforming the coal into a dense, stable carbon structure.
Carbonization & Industrial Impact
The development of metallurgical coke revolutionized the ferrous metals industry. It provided an economical and scalable replacement for charcoal in the reduction of iron ore. In a blast furnace, the carbon in met coke acts as a reducing agent. It reacts with iron oxide (Fe₂O₃), removing oxygen and forming carbon dioxide while liberating molten iron. In addition to chemical reduction, met coke provides structural support and maintains permeability within the furnace column.
Thermal & Safety Characteristics
Metallurgical coke is characterized by very low volatile matter, a fully carbonized structure with minimal hydrocarbon content, and a non-melting profile at any temperature. Unlike bituminous coal, it is not readily explosible in powder form. These thermal and safety properties make metallurgical coke especially well-suited for demanding high-temperature industrial applications.
WHY ASBURY
Your Global Supply Partner of Metallurgical Coke Materials
Asbury Advanced Materials supplies high-quality metallurgical and foundry coke in a broad range of sizes and specifications, supporting metal casting, reduction, friction, and industrial carbon applications with reliable sourcing and technical expertise.
Decades of Materials Expertise
Deep experience across carbon, graphite, and specialty materials—supporting complex, real-world applications.
Technical & Manufacturing Depth
Knowledgeable teams who understand material behavior, processing requirements, and application constraints.
Consistency, Quality & Control
Reliable materials processed to meet demanding specifications, batch after batch.
Global Reach & Supply Reliability
A diversified sourcing and distribution network designed to support customers wherever they operate.
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