Devcon Plastic Steel Putty is a steel-filled, two-part epoxy putty designed for repairing, rebuilding, and bonding metal surfaces without the need for welding or brazing. It cures at room temperature into a dense, durable metallic mass that can be drilled, tapped, machined, or painted, making it ideal for industrial maintenance, equipment repair, and structural restoration. It bonds to steel, aluminum, concrete, and some plastics, with excellent resistance to oil, gasoline, water, and many chemicals—yet remains non-sag for easy vertical or overhead application.

This epoxy offers about 45 minutes of working (pot) time at room temperature, with a full cure in approximately 16 hours. Thicker sections can reach handling strength in 4 hours, while full machinability becomes possible after complete cure. With a mix ratio of 2.5:1 by volume, it achieves around 2,800 psi tensile strength, 8,260 psi compressive strength, and a Shore D hardness of ~85. It withstands temperatures up to 120 °F when wet and 250 °F when dry.

Key Features:

• Bonds to steel, aluminum, concrete, and select plastics

• Non-sag, applies easily to vertical or overhead surfaces

• 45-minute pot life; full cure in ~16 hours; initial handling in ~4 hours

• Machinable: can be drilled, tapped, milled, or painted once cured

• Tensile strength ~2,800 psi; compressive ~8,260 psi; Shore D hardness ~85

• Chemical resistance to oil, gasoline, water, and many solvents

• Temperature resistance: wet ~120 °F; dry ~250 °F

• Ideal for structural repairs where welding is not practical