SIMBON / TECHNICAL NOTESJoint clearance affects capillary action and joint filling. Too little clearance can restrict filler flow, while too much can reduce the effectiveness of capillary action.
Clearance at room temperature may differ from clearance during brazing. With dissimilar metals, differences in thermal expansion can widen or narrow the gap.
No single clearance suits every joint. Consider component geometry, metal properties and process conditions together.
Original source
Back to technical knowledge Lucas Milhaupt
Brazing Fundamentals — Good Fit and Proper Clearances
Read the original publicationSource reviewed: 13 September 2026
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