What is the difference between LCC and LCB?

Unless my specs are well out of date the main difference I see is that the carbon content of LCB is 0.3% max and LCC is 0.25% max. Consequently LCC is better if welding is a consideration.

What is ASTM A352 Gr LCB?

The astm a352 grade lcb Relief and safety Valves are used to protect a pipeline system from excessive pressure and bursting. The relief system has a threshold pressure above which the valve opens and releases the pressure. The liquid flow is proportional to the pressure in a relief valve.

What is LCB material?

ASTM grade LCB steel is a carbon steel formulated for casting. Cited properties are appropriate for the normalized and tempered condition. LCB is the ASTM designation for this material. It has a moderately high ductility among the cast carbon steels in the database.

What is difference between WCB and WCC steel?

Carbon steel valves are kept in stock in forged ASTM A105 and it’s cast equivalent ASTM/A216-WCB. The European/DIN equivalent is C22. ASTM A216 WCC has a slightly higher pressure/ temperature rating than A216 WCB as it has a higher yield strength and a slightly higher manganese content. …

What is the chemical composition of A352 cast valve?

Chemical composition of A352 cast valves Gr. LCA/LCB/LCC (valve material chart): The ASTM A351 specification covers austenitic steel castings for valves, flanges, fittings, and other pressure-containing parts. The most common grades are ASTM A351 CF3, CF8 (SS304), and CF8M (SS316).

What are the different grades of ASTM A352?

ASTM A352 grades include LCA, LCB, LCC, LC1, LC2, LC3, LC4, LC9, CA6NM, the UNS number includes J02504, J03003, J02505, J12522, J22500, J42215, J31550, J41500, J31300, J91540. This standard is for the steel castings for valves, flanges, fittings, and other pressure-containing parts intended primarily for low-temperature service.

What are the chemical properties of LF2 LCC?

Chemical & Mechanical Composition A350-LF2† CHEMICAL PROPERTIES CHEMICAL PROPERTIES MECHANICAL PROPERTIES C 0.30 Max TS Min psi (Mpa) 70,000 (485) Mn 0.60 – 1.35 YS Min psi (Mpa) 36,000 (250) Si 0.15 – 0.30 EL (2″ Min) 22% P 0.035 Max RA Min 30%

What’s the difference between LCB valve and A105 valve?

The main difference between LF2/ LCB and A105/WCB is that LF2/LCB is Charpy impact tested at -46ºC. For this reason, Global Supply Line stocks LF2 and LCB valves dual conforming to A105 and WCB.