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ASME B31.3-2016 Table 323.2.2 Requirements for Low Temperature Toughness Tests for Metals (Cont'd) (16) NOTES: (1) Carbon steels conforming to the following are subject to the limitations in box B-2: plates in accordance with ASTM A36,A283, and A570; pipe in accordance with ASTM A134 when made from these plates; structural shapes in accordance with ASTM A992; and pipe in accordance with ASTM A53 Type F and API 5L Gr.A25 butt weld. (2) Impact tests that meet the requirements of Table 323.3.1,which are performed as part of the weld procedure qualification,will satisfy all requirements of para. 323.2.2, and need not be repeated for production welds. (3) For carbon steels, impact testing is not required if the design minimum temperature is at or above —104°C(-155°F), and the minimum temperature without impact testing is less than or equal to the design minimum temperature using the rules based on stress ratio defined in Fig. 323.2.213. (4) Impact tests are not required when the maximum obtainable Charpy specimen has a width along the notch of less than 2.5 mm (0.098 in.). Under these conditions, and where the stress ratio defined in Fig. 323.2.213 exceeds 0.3,the design minimum temperature shall not be less than the lower of—48°C (-55°0 or the minimum temperature for the material in Table A-1 or Table A-1M. (5) Impact tests are not required when the maximum obtainable Charpy specimen has a width along the notch of less than 2.5 mm (0.098 in.). (6) For austenitic stainless steels, impact testing is not required if the design minimum temperature is greater than or equal to —104°C (-155°0 and the stress ratio as defined in Fig. 323.2.213 does not exceed 0.3. (7) Tests may include tensile elongation, sharp-notch tensile strength (to be compared with unnotched tensile strength), and/or other tests, conducted at or below design minimum temperature. See also para. 323.3.4.