A brazing process that uses heat from heated blocks applied to the joint. This is an obsolete or seldom-used process. See STANDARD WELDING TERMS.

In block brazing, coalescence is produced by the heat obtained from heated blocks applied to the part to be joined, and by using non-ferrous filler metal with a melting point above 425°C (800 F) but below that of the base metal. The filler metal is distributed in the joint by capillary attraction.