2A12 aluminum plate is a high-strength hard aluminum that can be heat treated and strengthened. It has moderate plasticity in annealing, hard quenching, and hot states, good spot welding weldability, and a tendency to form intergranular cracks when using gas welding and argon arc welding; The alloy has good machinability after quenching and cold work hardening, but is poor in the annealed state.
