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The most versatile PUCB binder system in the market HAI's Sigmacure products owes its position as the leading core production process due to its versatility, efficiency, and cost-effectiveness. Sigmacure offers a wide selection of part ones and part twos resins to meet all production requirements and specifications.

Proven results

  • The highest levels of casting quality
  • Highly complex castings, such as thin wall thickness
  • Ideal for highly automated production
  • Can be used with many alloys

To learn more, view our Sigmacure Technical Data Sheets.

System Features

  • High productivity, fast cycle times
  • Good processability and good bench life of the sand mixture even when a suboptimal substrate is used
  • Excellent dimensional accuracy
  • Moisture-resistant, even under difficult ambient conditions
  • Flexible/customizable system for special requirements
  • Suitable with a large variety of equipment
  • High process safety
  • Lowest cost use
  • Low-risk system / higher degree of safety

Sigmacure 138/238

Engineered to deliver the best bench life properties, especially when adverse ambient conditions exist, and hot sand is prevalent.

  • Excellent performance when hot sand, hot ambient conditions, as well as relative high humidity are an issue
  • Engineered mainly for Fe applications
  • Best bench life performance
  • Good hot strength

Sigmacure 127/217

  • High-performance PUCB binder
  • High out-of-the-box tensile strengths
  • Excellent choice for tight dimensional tolerance castings
  • Helps to minimize shrinkage defects associated with PUCB systems
  • The first option for high-value, high-production aluminum applications
    • An excellent option for the SPM process
    • Low condensables
  • Reliable bench life performance
  • Performs with both ferrous and non ferrous alloys

Sigmacure 135 P1
Sigmacure 235 P2

 Sigmacure 210MOD P2

Our family of Cold-Box systems is designed to:
  • Increase core-making productivity
    • Fastest cycle-to-cycle
    • Fast curing speed
    • Outstanding wipe-off properties
  • Reduce downtime at core-making
    • Avoid dumping unnecessary sand from hoppers
    • Exceptional release properties
      SC135/210MOD (better)
      SC135/235 (best)

  • Improve hot strength for Fe applications (*SC 210MOD)
    • High out-of-the-box strengths (*When Hybrid systems are used)
    • Excellent bench life compare to other standard systems

Technical Assistance

HAI can help you optimize your operation, improve your performance, and help you choose components to meet all your core-making needs. HAI will help you choose the right Part 1 to Part 2 ratios for your operation. Contact us today and let one of our experienced employees help you find the best binder to achieve your goals.

For additional product information, contact Aaron Kaboff at