Belzona 1121 (Super XL-Metal)
Belzona 1121 (Super XL-Metal) is a high-performance, two-component, epoxy-based repair composite designed for extended working life and high precision in applications requiring durable and reliable metal repair solutions. It is particularly suitable for larger-scale repairs and intricate reshaping tasks, thanks to its long working time and excellent adhesion.
Key Features
- Extended Working Time:
- Allows for more complex and larger-scale applications without rushing the process.
- High Strength and Durability:
- Excellent resistance to wear, impact, and mechanical stress.
- Exceptional Adhesion:
- Bonds strongly to a variety of substrates, including metals, ceramics, and composites.
- Non-Shrinking:
- Retains dimensional stability during curing.
- Machinable After Curing:
- Can be drilled, tapped, or machined for precise finishing.
- Temperature Resistance:
- Operates in temperatures up to 120°C (248°F) continuously and 150°C (302°F) intermittently.
Applications
- Metal Repairs:
- Repair cracks, holes, and worn surfaces on machinery, equipment, and structural components.
- Rebuilding Components:
- Reshape damaged pump casings, impellers, flanges, and more.
- Corrosion Protection:
- Protects surfaces from chemical and environmental degradation.
- Sealing and Bonding:
- Ideal for sealing leaks and bonding dissimilar materials.
How to Use
- Surface Preparation:
- Thoroughly clean the surface to remove contaminants like grease, oil, and loose material. Abrade the surface for better adhesion.
- Mixing:
- Combine the resin (Part A) and hardener (Part B) in the recommended ratio until a uniform color is achieved.
- Application:
- Apply the mixture using a spatula or brush, ensuring it adheres well to the prepared surface.
- Curing:
- Allow the material to cure at room temperature. Full mechanical properties are typically achieved within 24-48 hours.
Technical Specifications
- Base: Epoxy resin
- Color: Grey (when mixed)
- Compressive Strength: 90 MPa (13,000 psi)
- Adhesive Strength: 20 MPa (2,900 psi)
- Temperature Resistance:
- Continuous: 120°C (248°F)
- Intermittent: 150°C (302°F)
- Working Life: Approximately 2 hours at 20°C (68°F)
Benefits
- Suitable for large-scale and complex repairs due to extended working life.
- Eliminates the need for hot work, such as welding, reducing downtime and risk.
- Provides a long-lasting and cost-effective solution for industrial maintenance.
- Resistant to a wide range of chemicals, oils, and environmental factors.
Safety Precautions
- Use personal protective equipment (PPE), such as gloves and goggles.
- Ensure adequate ventilation during mixing and application.
- Refer to the Safety Data Sheet (SDS) for detailed safety instructions.
Storage
- Store in a cool, dry place between 5°C and 30°C (41°F to 86°F).
- Keep containers tightly sealed to prevent contamination and prolong shelf life.
Belzona 1121 (Super XL-Metal) is trusted by industries worldwide for its reliability, precision, and extended working life, making it an excellent choice for repairing and protecting critical metal components.

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