A182 316L piping flange minimum temperature A182 316L piping flange minimum temperature ScottAndrew (Mechanical) (OP) 19 Sep 17 06:46 Where is the minimum temperature associated with A182 316L piping flanges defined? RE: A182 316L piping flange minimum temperature DSB123 (Mechanical) 19 Sep 17 06:54 Look in ASME II Materials RE: A182 316L piping flange minimum temperature XL83NL (Mechanical) 19 Sep 17 06:59 What exactly do you mean with associated temperature? The lowest tempeature you can use them at, with or without impact testing? Which code do you use? If it's for B31.3, refer to table A-1; -425 °F *. You can go lower, refer to para 323.2.2. So the question stands; what exactly do you want or require? Quote: *The minimum temperature shown is that design minimum temperature for which the material is normally suitable without impact testing other than that required by the material specification. However, the use of a material at a design minimum temperature below −29°C (−20°F) is established by rules elsewhere in this Code, including para. 323.2.2(a) and other impact test requirements. For carbon steels with a letter designation in the Min. Temp. column, see para. 323.2.2(b) and the applicable curve and Notes in Fig. 323.2.2A. Furthermore, if you want to use flanges at such low temperatures, make sure you have the correct bolting and gaskets to assure good leakfree sealing. RE: A182 316L piping flange minimum temperature ScottAndrew (Mechanical) (OP) 19 Sep 17 07:18 Great thanks. Yes, question was about B31.3 and the minimum design temperature of the material.