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205 FAST HARDENER

205 Fast Hardener® is formulated for general coating and bonding applications at lower temperatures and to produce a rapid cure that develops its physical properties quickly at room temperature. The 105 Epoxy Resin®/205 Fast Hardener system forms a high-strength, moisture-resistant solid bond with excellent bonding and barrier coating properties. The mix ratio is 5 parts resin to 1 part hardener by volume. Not intended for clear coating.

WEST SYSTEM| image: 205-b

PROJECT USES:

  • Marine
  • Boat Repair
  • Bonding
  • Fabrication
  • Barrier Coating

CURE TIME:

  • Pot life (100 grams cupful):
    • At 72°F (22°C): 9 to 12 minutes
  • Working time (thin film):
    • At 72°F (22°C): 60 to 70 minutes
  • Solid state:
    • At 72°F (22°C): 6 to 8 hours

CURE TEMP:

  • Minimum: At 40°F (4°C)

PRODUCT SIZES:

  • 205-A: 0.44 pint
  • 205-B: 0.86 quart
  • 205-C: .94 gallon
  • 205-E: 11.31 gallon

205 FAST HARDENER Facts

BONDING & CLAMPING

There are two types of structural bonding with epoxy. Two-step bonding is the preferred method for most situations because it promotes maximum epoxy penetration into the bonding surface and prevents epoxy-starved joints. Single-step bonding can be used when joints have minimal loads and excess absorption into porous surfaces is not a problem.

COLD WEATHER BONDING

“What’s the lowest temperature WEST SYSTEM Epoxy can be applied?” During cold weather, this is a common question our Technical Advisors are asked. Fortunately, it’s one we’re well equipped to answer.

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