Valve Material Reference
ASTM A352 LCB Valve
Low Temperature Carbon Steel LCBASTM A352 Grade LCB is a low-temperature cast carbon steel specified for valve bodies and pressure-retaining castings designed for service at −46°C (−50°F).
Form
Cast
Max Temp
+343°C (+650°F)
Min Temp
−46°C (−50°F) — Charpy impact tested
Category
Carbon Steel
Chemical Composition — ASTM A352 LCB
Temperature Range
−46°C to +343°C (−50°F to +650°F)
Maximum Temperature
+343°C (+650°F)
Minimum Temperature
−46°C (−50°F) — Charpy impact tested
Equivalent Grades — ASTM A352 LCB
| Standard | Equivalent Grade |
|---|---|
| ASTM | A352 LCB (cast) — see also A350 LF1 (forged equivalent) |
| UNS | J03003 |
| EN | 1.0558 (GP240GH) |
Suitable Services
Natural gas pipeline block valves — compressor station isolation in cold climates
LPG / propane / butane storage terminals — tank outlet isolation valves
Nitrogen and CO₂ storage valve bodies — food-grade gas storage
Ethylene and propylene service at moderate sub-zero temperatures
Not Suitable For
Service below −46°C — use LCC (Charpy to −101°C) or stainless CF3M, A352 LCN for colder
High-temperature above +343°C — use WCB or alloy steel
H₂S sour service without NACE compliance — risk of sulfide stress cracking
Valve Body Applications
Natural gas transmission mainline block valve bodies
LPG storage and terminal isolation valve bodies
Propane/butane storage valve bodies (bulk tanks)
Cryogenic nitrogen service (−46°C) valve bodies
Trim Applications
Gate valve trim for low-temperature natural gas service
Ball valve body end caps and bonnets in LPG service
Typical Valve Types in ASTM A352 LCB
Gate valves
Ball valves
Globe valves
Check valves
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We supply ASTM A352 LCB (Low Temperature Carbon Steel LCB) gate valves, globe valves, ball valves, check valves, and more. Full certification documentation — EN 10204 3.1/3.2 MTCs, hydro test certs — as standard.