Hardness sample for PQR

Which standards are specified the deploying hardness specimen in the test coupon of welding procedure?
PQR position at 6G

There are required location of hardness sample in 8.4.2 Welding Positions of BS EN ISO 15614 - 1: 2017.

  1. Impact test shall be taken from the highest heat input.
  2. Hardness test shall be taken from the lowest est heat input.


Find more standard in BSI Standards for welding inspector

Which methods are mostly used in PQR?