This guide is written at just the right level for an intelligent introduction for the engineer new to welding and the up and coming senior technician. Tables and figures support topics such as:metal structures,metal forms,diffusion,solid solubility,residual stress,shielding and purging,phase transformation,hardness and hardenability,grain size,stainless steels,aluminum and its alloys,copper and its alloys,refractory alloys, and repair welding.