The different between ASTM A105 and A105N

ASTM A105N where the ‘N’ stands for normalized.

It has been heat treated to A105N where the ‘N’ stands for normalized

It has been heat treated to remove the internal stresses caused by casting, forming etc.

If a customer specifically asks for A105N then it will be for a good reason. The normalizing heat treatment will ensure the A105N has superior properties to that of the A105.

The ‘N’ is not a category code, the A105 should be normalized if intended for use below -1 degree C.

Read more: How to inspect and review its MTC for ASTM A105 / A105M

Nguyen Duy Bien

Enjoy learning and researching, reading book. Knowledge welding inspection painting inspection.

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