Brazement design is the most important characteristic responsible for the reliability and service behavior of brazed structures and units.  According to nowadays views, the correct design provides both the required mechanical and service properties of the brazed structure and high technological suitability, in order to fabricate it most economically. Many design variables should be considered during the development of a brazing technology to reach the correct design solution.

    A system of quantitative characteristics is discussed to facilitate the designing procedure, to evaluate the final design solution and to compare it with the design of other brazed structures available in the practice. Each of about 100 design factors are ranked by a number within the 0 to 10 range, and each group of the design factors is assigned a weighing coefficient (WC). For example, brazeability of a base metal and type of joints have the WC values of 10, joint clearance –  20, alignment of parts to be brazed, brazing methods and type of equipment –  9, correct form of the applied filler metal – 8, however, the factors such as parts unification and  possibility of re-brazing have the WC as small as 4. The sum of all factor numbers multiplied by the weight coefficient is the final score of the brazed design.  Also, the system may play a role of the check list for designers.

     Application of this system is illustrated by several examples, which  are extracted from the practice of the design evaluation made for automotive and aircraft brazed structures.