BELZONA 4341 (Magma CR4)

A high temperature epoxy coating for concrete and metal surfaces in contact with hot inorganic acids

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A durable, 2-part epoxy barrier coating optimised for resistance to hot inorganic acids such as sulphuric and hydrochloric acid up to 90°C (194°F). This solvent-free coating isolates concrete and metal surfaces from deteriorating chemical environments.

Belzona 4341 (Magma CR4) provides a safe and hygienic surface which meets the USDA requirements for incidental food contact. It is easy to mix and apply without the need of specialist tools and cures at room temperature.

Key benefits:

  • Excellent chemical resistance against a range of hot inorganic acids
  • Meets USDA requirements to provide safe and hygienic surfaces with no tainting of foodstuffs
  • Easy to mix and apply with no specialist tools
  • Reduced health and safety risks as it is solvent-free
  • Application and cure at room temperature – no hot work involved
  • Excellent bonding to all rigid substrates including concrete, fiberglass, brick, stainless steel, mild steel and carbon steel

Applications for Belzona 4341 (Magma CR4) include:

  • Chemical resistant coating for acid retaining walls, tanks, chemical spill areas, concrete tank plinths and pumps
  • Sealing of chemical drains, channels, transfer and holding areas
  • Protection of concrete pump bases and casings from chemical spill
  • Creation of slip resistant walkways in chemical containment areas when combined with aggregate

Key technical data:

Working life at 20°C (68°F)15 minutes
Full chemical resistance cure 20°C (68°F)5 days
Recommended coverage rate (1.5kg unit)Practical coverage rate for a 2 coat system:
2.25 sq.m. (24 sq.ft.) per 1.5 kilogram per coat
Pull off adhesion (D4541 / ISO 4624)3540 psi (24.40 MPa) ambient cure on blasted mild steel
Compressive strength (ASTM D695)7,300 psi (50.33 MPa) ambient cure
Temperature resistance90°C (194°F) immersed, 200°C (392°F) dry
Bonds toConcrete, stone, brick, aluminium, copper, steel, stainless steel, cast iron and many more
Typical applicationsCoating of concrete and metal for resistance to  hot inorganic acids
Unit size1.5kg. Pack sizes may vary locally.


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