Flanges made of carbon and low alloy steels can be found in the standard ASTM A350 specification.
Carbon steel A350 LF2 flanges have excellent corrosion resistance. Carbon steel A350 LF2 threaded flanges have excellent strength and excellent machinability.
The main difference between carbon steel A350LF2 ferrule flanges and other austenitic steels is the higher hardness of carbon steel alloys.
These ASTM A350 Flanges LF3 are suitable for use down to 150oF (LF3). These LTCS A350 LF3 orifice plate flanges are basically used in high energy/high temperature channel systems.
Pressure-Temperature Rating of ASTM A350 Gr. LF3 flanges are identical to ASTM A105 flanges.
