CVN Impact test specimens location for welded structure

Charpy V-notch (CVN) impact testing of the welded steel product. A required toughness level is commonly expressed for a particular test temperature (which may be different from the lowest anticipated service temperature) at which a minimum CVN impact energy value (KVmin), shall be achieved. The approximate relationship between the CVN energy-temperature curve and the fracture behavior of a welded steel component.

Here are the samples of Typical impact test specimens will be machined and tested according to AWS D1.1, ASME B31.3, ASME VIII, and other construction codes.

Notch location:
1 Centreline of the weld
2 Fusion line
3 In HAZ, 1mm from the fusion line
4 In HAZ, 3mm from the fusion line
5 In HAZ, 5mm from the fusion line

In case of the base metal thickness is over 20mm, or 50mm. Addition test will be took placed at the Root area as below image:

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