// metallographic testing of materials
Macrographic examinations
Macrographic examinations involve the observation of macro-structural features of the specimen to be analyzed, that is, those observable at low magnification, indicatively less than 30-50x.
Macrographic examinations are widely used in the analysis of various types of semi-finished products and metallurgical products, as well as for the verification of welded joints.
Depending on the type of material, semifinished product and/or product under consideration, it is possible to observe characteristics such as, for example: segregations, homogeneity of structure, presence of defects such as tears, cracks and porosity, banding and fiber trends, dimensional and geometric characteristics in the case of welded joints.
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accredited tests
SMT, an ACCREDIA Testing N°00588 accredited materials testing laboratory, has accredited the testing of macrographic examinations according to the following international standards:
ASTM A604/604M
ASTM E381
UNI EN ISO 17639+CEN ISO/TR 16060
ASTM E340
UNI 3138
// questions and answers
clear up your doubts
What does a macrographic examination involve?
Macrographic examination involves observation of specimens at low magnification to identify defects and macroscopic features.
What is the difference between a macrographic and a micrographic examination?
Macrographic examination observes features visible to the naked eye or at low magnification, while micrographic examination analyzes the microstructure of materials at much higher levels of magnification.
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