-What material should be used for studs and nuts in 120-degree stainless steel equipment?

2018-08-09View Original

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-What material should be used for studs and nuts in 120-degree stainless steel equipment?

Reply #22018-08-09

Pipe flanges – if the use of non-high-strength stud nuts is permitted, selection can be made in accordance with HG/T20613; there are also medium-strength low-temperature stud nuts, with a minimum operating temperature of -196℃； Main flange—S30408 is selected ； If the strength is insufficient, S30408 with strain hardening treatment can be used. (I’m not sure about this.) I previously designed a device that handled highly hazardous media, with a design temperature of -100°C; in such cases, 30CrMoA couldn’t be used for the studs and nuts. There was also an impact requirement at -100°C: Q

Reply #32018-08-09

Just select according to GB150-2011.

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