TCC-401 Epoxy Resin Room Temperature Mass Casting System Epoxy Resin TCC-401, and Hardeners TCC-104, TCC-104-5 or TCC-105 Epoxy Resin TCC-401 is an iron oxide filled mass casting resin designed as the back up material for casting applications such as plastic draw dies for forming metal parts. Size of the casting is limitless and shrink and exotherm are controlled by utilizing fillers and the proper hardener. Hardener Types: TCC-104 (for up to 1″ cast thickness), Cure Time: 8-12 hours TCC-104-5 (for 1″ to 4″ cast thickness), Cure Time: 12-24 hours TCC-105 (for 4″ to 10″+ cast thickness), Cure Time: 24-48 hours Features: Room Temperature Mass Casting System (choice of 3 hardeners) 30-120 Minute Work Life Black Color Hardness: 80 Shore D Compressive Strength: 315,000 psi Tensile Strength: 7000 psi