2 HAZ 3 Base Typical a Figure 4 Rockwell hardness test locations — Vickers method (ISO 6507-1) If the Vickers method is selected by the manufacturer, the following procedure shall be used: for a weld cross-section thickness less than 12 mm (1/2 in), four hardness tests each shall be made in the base materials and the weld; for a weld cross-section thickness equal to or greater than 12 mm( ½ in), six hardness tests each shall be made in the base material(s) and the weld; multiple HAZ hardness tests equally spaced 3 mm (0.125 in) apart shall be performed in each of the base materials within 0.25 mm (0.01 in) of the weld interface and at least one within 1.5 mm (0.06 in) from the top and the bottom of the weld. See Figure 5 for test locations. Dimensions in millimetres (inches) Key 1 Weld 2 HAZ 3 Base Typical a Figure 5 Vickers hardness test locations — Hardness testing (optional) Minimum mechanical properties — For the purpose of hardness inspection and qualifying production weldments, a minimum of three hardness tests in the weld metal shall be made and recorded as part of the PQR. These tests shall be made by the same methods used to inspect production weldments. These tests may be used to qualify weld metal with hardness less than shown in 8.5.1.4 by the method shown in the same subsection. Impact testing When impact testing is required by the base material specification, the testing shall be performed in accordance with ASTM A 370 using the Charpy V-notch technique. Results of testing in the weld and base material HAZ shall meet the minimum requirements of the base material. Records of results shall become part of the PQR. When impact testing is required of the base material, one set of test specimens each shall be removed at the 1/4 thickness location of the test weldment for each of the weld metal and base material HAZ. The root of the notch shall be oriented normal to the surface of the test weldment and located as follows: weld metal specimens (three each) 100 % weld metal; HAZ specimens (three each) shall include HAZ material as specified in the manufacturer's written procedure;
2 HAZ 3 Base a Typical Figure 4 — Rockwell hardness test locations Vickers method (ISO 6507-1) If the Vickers method is selected by the manufacturer, the following procedure shall be used: for a weld cross-section thickness less than 12 mm (1/2 in), four hardness tests each shall be made in the base materials and the weld; for a weld cross-section thickness equal to or greater than 12 mm( ½ in), six hardness tests each shall be made in the base material(s) and the weld; multiple HAZ hardness tests equally spaced 3 mm (0.125 in) apart shall be performed in each of the base materials within 0.25 mm (0.01 in) of the weld interface and at least one within 1.5 mm (0.06 in) from the top and the bottom of the weld. See Figure 5 for test locations. Dimensions in millimetres (inches) Key 1 Weld 2 HAZ 3 Base a Typical Figure 5 — Vickers hardness test locations Hardness testing (optional) — Minimum mechanical properties For the purpose of hardness inspection and qualifying production weldments, a minimum of three hardness tests in the weld metal shall be made and recorded as part of the PQR. These tests shall be made by the same methods used to inspect production weldments. These tests may be used to qualify weld metal with hardness less than shown in 8.5.1.4 by the method shown in the same subsection. Impact testing When impact testing is required by the base material specification, the testing shall be performed in accordance with ASTM A 370 using the Charpy V-notch technique. Results of testing in the weld and base material HAZ shall meet the minimum requirements of the base material. Records of results shall become part of the PQR. When impact testing is required of the base material, one set of test specimens each shall be removed at the 1/4 thickness location of the test weldment for each of the weld metal and base material HAZ. The root of the notch shall be oriented normal to the surface of the test weldment and located as follows: weld metal specimens (three each) 100 % weld metal; HAZ specimens (three each) shall include HAZ material as specified in the manufacturer's written procedure;