AWS C3.2M-C3.2:2019 pdf download.Standard Method for Evaluating the Strength of Brazed Joints
1.1 Scope. The purpose of this standard is to describe the test methods used to obtain reliable data on the strength of metallic-to-metallic, metallic-to-nonmetallic, and nonmetallic-to-nonmetallic brazed joints. Test specimens preparation and testing is described to provide consistent and proper fabrication, brazing practices. and test results. Interpretation of the test results is the responsibility of the user.
Documentation of the materials, brazing parameters, and test conditions are required to allow comparison of results with the joint strengths obtained by others using this standard method. General use of this standard method may permit a com-pilation of brazed joint strengths and brazing design criteria at some future time.
1.2 Units of Measurement. This standard makes use of both the International System of Units (SI) and U.S. Customary Units. The latter are shown in brackets ([ ]) or in appropriate columns in tables and figures. The measurements may not be exact equivalents; therefore each system must be used independently.
1.3 Safety. Safety and health issues and concerns are beyond the scope of this standard; some safety and health information is provided, but such issues are not fully addressed herein.
Work performed in accordance with this standard may involve the use of materials that have been deemed hazardous, and may involve operations or equipment that may cause injury or death. This standard does not purport to address all safety and health risks that may be encountered. The user of this standard should establish an appropriate safety program to address such risks as well as to meet applicable regulatory requirements. ANSI Z49.1 should be considered when devel-oping the safety program.
2. Normative References
The documents listed below are referenced within this publication and are mandatory to the extent specified herein. For undated references, the latest edition of the referenced standard shall apply. For dated references, subsequent amendments to, or revisions of, any of these publications do not apply.
4.1 Test Description. The mechanical performance of a brazed joint is determined by the integration of the brazing fller metal, the base material, the geometry of the brazement, and the brazing procedure. Moreover, the properties of the base material may be sensitive to the process parameters and joint overlap. As the overlap is increased, the failure location shifts from failure in the brazed joint to failure in the base material. Joints made with an overlap greater than this transition value will behave as being stronger than the materials being joined together. Material thicknesses, T, other than 3.0 mm [0.125 in] may be used for test specimens provided that overlaps are adjusted accordingly.AWS C3.2M-C3.2 pdf download.