Potlining Materials
Carbon & Graphite Potlining Materials for the Aluminum Industry
Cathode and Sidewall Blocks Engineered for Performance and Longevity
With over 40 years of experience supplying the aluminum, steel, and metallurgical industries, MBI Graphite delivers premium-grade carbon and graphite potlining materials tailored to your exact needs. Our sidewall blocks and cathode blocks are manufactured to meet demanding quality standards — offering low electrical resistance, high thermal stability, and outstanding abrasion resistance.
Whether you need vibrated, extruded, or graphitized blocks — we’ve got the material, machining capability, and delivery network to support your potline production goals.
Why Choose MBI for Potlining Materials?
Full Product Offering
We supply a complete line of carbon and graphite materials for aluminum smelters, including:
- Cathode Blocks – Vibrated and extruded options available in anthracite, graphitic, and fully graphitized forms
- Graphite Sidewall Blocks
- Carbon Sidewall Blocks – Anthracite, precision-milled on all six sides
Flexible Sizing & Customization
We support custom dimensions and high-precision machining for both small and extra-large cathode block configurations.
Reliable Supply & Competitive Pricing
Our customers rely on MBI for consistent product quality, responsive support, and dependable lead times — all at an affordable cost.
View Technical Sheets
Our sidewall and cathode block grades are supported by downloadable technical data.
Note: These data are for guidance only. Please consult your MBI representative for a complete evaluation.
Need help interpreting specs or optimizing performance? Speak to an MBI Expert
Carbon & Graphite for Aluminum Smelting
Sidewall Blocks
- Anthracite-based and graphite grades available
- Milled on all six sides
- Designed for long life in high-heat aluminum reduction cells
Cathode Blocks
- Available in vibrated, extruded, and graphitized formats
- Low thermal expansion
- Excellent chemical resistance and dimensional consistency
- Custom cut to meet customer requirements
MBI potlining materials are ideal for use in:
- Aluminum smelting reduction cells
- Lining repairs and rebuilds
- Electrolytic aluminum production
Talk to Our Potlining Materials Experts
Need help matching the right material to your potline specs? Looking to source a consistent, high-quality supply of graphite or carbon blocks? We’re here to help.