BELZONA 4331 (Magma CR3)

A high temperature epoxy coating for the protection of concrete and metal surfaces in contact with hot organic acids and other chemicals

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A high performance, 2-part epoxy coating optimised for resistance to hot organic acids such as acetic acid and organic solvents up to 90°C (194°F). This solvent-free coating isolates concrete and metal surfaces from deteriorating chemical environments.

Belzona 4331 (Magma CR3) provides a safe and hygienic surface which meets the USDA requirements for incidental food contact. It is simple to apply by brush in one or two coats without the need of specialist tools and cures at room temperature.

Key benefits:

  • Excellent chemical resistance against a wide range of chemicals including hot organic acids, alkalis and strong solvents
  • USDA approved to provide safe and hygienic surfaces with no tainting of foodstuffs
  • Reduced health and safety risks as it is solvent-free
  • Application and cure at room temperature – no hot work involved
  • Good resistance to hot immersion
  • Excellent bonding to all rigid substrates including concrete, stone, brick, stainless steel, mild steel, carbon steel and copper

Applications for Belzona 4331 (Magma CR3) include:

  • Chemical resistant material for protecting acid retaining walls, bund areas, chemical spill areas and concrete tank plinths
  • Sealing of chemical drains and channels
  • Protection of pump bases and casings from chemical spill
  • Creation of slip resistant walkways in chemical containment areas when combined with a Belzona aggregate
  • Lining of immersed equipment such as pumps, vessels or tanks to protect against acid attack

Key technical data:

Working life at 20°C (68°F)20 minutes
Time to full mechanical cure at 20°C (68°F)5 days
Recommended coverage rate (1.5kg unit)Practical coverage rate for a 2 coat system:
1.85 sq.m. (20 sq.ft.) per 1.5 kilogram per coat
Pull off adhesion (D4541/ISO 4624)4,770 psi (32.9 MPa) ambient cure on blasted mild steel
Compressive strength (ASTM D695)10,400 psi (71.7 MPa) ambient cure
Temperature resistance90⁰C (194⁰F) immersed, 200⁰C (392⁰F) dry
Bonds toAluminium, copper, steel, stainless steel, cast iron  concrete, stone, brick and other materials
Typical applicationsCoating of concrete and metal for resistance to  hot organic acids
Unit size1.5kg. Pack sizes may vary locally.


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