Mechanical testing of samples taken from the finished chain is performed in order to confirm that pertinent mechanical criteria are fulfilled.

The sample sets are retrieved per the sampling frequency specified in the classification society rules and per each melt of steel.

A normal set of test specimens taken from one sample consist of:
- One break test, three-link-sample. For dimension above Ø 132 mm according to DnV rules one link/cast is breakload tested
- Tensile and impact tests, one link
- Spare, one link

The chain must not be proof-loaded until mechanical tests and the break test have been approved.

The mechanical testing is performed according to rules by the classification societies. The test results are recorded in our monitoring system RChain.

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