Metallography involves examining the microstructure of metals and alloys, typically using advanced microscopic
techniques. This analysis is vital for understanding material properties such as grain size, crystal structure,
defects, inclusions, weld quality, and failure mechanisms.
It is widely used in aerospace, automotive, foundries, heat-treatment plants, and general manufacturing sectors.
Tests Performed
Specific Test Performed
Test Method
Microstructure
Macrostructure
Graphite in cast iron (nodular, grey, malleable)
Grain size (ASTM chart comparison)
Decarburization depth
Inclusion rating
IS 7754 (Part-1)
ISO 945-1
ASTM A247
ASTM A923 – Method A
ASTM A923 – Test Method C
ASTM E562
ISO 17781
ISO 17639
ASME SEC IX, QW-183 & QW-184
ASM Handbook Volume 9: 2004
IS 4748
ASTM E112
IS 6396
ISO 3887
ASTM E1077
ASTM E45
IS 4163
ISO 4967
ASTM E381
AWS D1.1 / D1.1M (Clause 6.10.4)
AWS D1.6 / D1.6M (Clause 6.9.3.4)
IS 11371
