Corecell A-Foam is the original Corecell material, developed because of frustrations with inadequate PVC core technology in marine sandwich structures. Corecell A-Foam is well known for it’s incredible toughness and resistance to cracking, which comes from its high ductility. Corecell A-Foam can elongate up to 65% in shear before failure, making core shear failure in a laminate almost impossible. Tests and experience show that Corecell A-Foam is the most reliable core material for dynamic loading situations where PVC and balsa may fail due to poor shear elongation properties. This reliability has made Corecell A-Foam the preferred choice amongst offshore yachtsmen for twenty years.