Tensile Testing
Metallurgical
Laboratory

4520 Willow Parkway
Cleveland, OH 44125
TF: 877-TENSILE
PH: 216-641-3290
FX: 216-641-1223

Macro Etch / Grain Flow

Macroetching (ASTM E340) is the process used on metals and alloys to reveal the macrostructure. The macroetched bars, billets, blooms, and forgings can be rated for their condition using a series of photomacrographs contained in ASTM E340 and ASTM E381.

In forgings the technique is used to examine the Grain Flow to ensure it follow the shape of the part. It is also used to describe certain conditions of macro segregation which are often characteristic of consumable electrode remelted materials (ASTM A604). 

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Specialized testing and services include consulting, failure analysis, reverse engineering service, fastener testing, scanning electron microscopy, welder qualification, materials and process problem solving,and miscellaneous tests on non-metallic materials.

Call Tensile Testing Today At 216.641.3290 And Speak Directly With One Of Our Experts.