Studbolt and nut ASTM A193 B7,B7M,B16,B8,B8M,A453 660,A182 F55,A182 F51

MATERIALS-STUDBOLTS/HEX NUTS ASTM A182 F55

ASTM A182 specification covers forged or rolled alloy and stainless steel pipe flanges, forged fittings, and valves and parts for high-temperature service for use in pressure systems.

A182 F55 - UNS S32760

Excellent corrosion resistance in a wide variety of corrosive
Outstanding resistance to pitting and crevice corrosion in seawater and other chloride containing environments, with Critical Pitting Temperature exceeding 50°C
High strength compared to austenitic and 22%Cr duplex stainless steels
Excellent ductility and impact strength at both ambient and sub-zero temperatures
High resistance to abrasion, erosion and cavitation erosion
Excellent resistance to stress corrosion cracking in chloride containing environments
Listed in NACE MR 01 75 for sour service