Designation Cross-Reference

GP240GH — ASTM Equivalent

Holding a datasheet that specifies GP240GH (EN)? The valve-grade equivalent, its properties, and certified supply of the matching ASTM grade.

What is the ASTM equivalent of GP240GH?

GP240GH is a EN designation corresponding to ASTM A217 WC9 (Chrome-Moly WC9 (2.25Cr-1Mo)) and A352 Grade LCC (Low Temperature Carbon Steel LCC) and A216 WCC (Carbon Steel WCC) and A352 LCB (Low Temperature Carbon Steel LCB) for industrial valve service. The full grade data is below - equivalence is by nominal chemistry and mechanical class, so confirm composition and heat-treat condition against the governing standard before substituting in critical service.

A217 WC9

Chrome-Moly / Alloy Steel

Chrome-Moly WC9 (2.25Cr-1Mo) - cast form.

Service temperature-18°C to +593°C

Nominal compositionC ≤ 0.18%, Cr 2.00–2.75%, Mo 0.90–1.20%, Mn 0.40–0.70%. Martensitic after heat treatment.

Typical service: Main steam (MS) service - coal, gas, and nuclear power plants; Hot reheat steam (HRH); HP feedwater - Class 600–900, up to 593°C

Also designated:GP240GH [EN]1.0619 (not direct equiv.) [EN]GS-17CrMo55 [DIN]622 Grade 31 [BS 1504]

A352 Grade LCC

Carbon Steel

Low Temperature Carbon Steel LCC - cast form.

Service temperature-46°C to +345°C

Nominal compositionC ≤ 0.25%, Mn 0.50–1.20%, Si ≤ 0.60%, P ≤ 0.030%, S ≤ 0.030%. Impact tested at −46°C.

Typical service: LNG terminals and LNG storage tank valves; LPG and propane storage and transfer; Ethylene and propylene plants

Also designated:GP240GH [EN]1.0619 (approx) [EN]LT20 (approx) [BS]

A216 WCC

Carbon Steel

Carbon Steel WCC - cast form.

Service temperature-29°C to +538°C

Nominal compositionC ≤ 0.25%, Mn ≤ 1.20%, Si ≤ 0.60%, P ≤ 0.035%, S ≤ 0.035%. Carbon equivalent: Ceq ≤ 0.55%. Higher Mn than WCB gives elevated strength.

Typical service: High-pressure steam up to Class 900; Crude oil, refined products, and natural gas in high-pressure lines; Utility water and condensate at elevated pressure

Also designated:Group 1.1 (same as WCB) [ASME B16.34]GP240GH (1.0619) [EN]Grade 480 [BS]SCPH 2 [JIS]

A352 LCB

Carbon Steel

Low Temperature Carbon Steel LCB - cast form.

Service temperature-46°C to +343°C

Nominal compositionC ≤ 0.30%, Mn 0.50–1.00%, Si ≤ 0.60%, P ≤ 0.025%, S ≤ 0.025%

Typical service: 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

Also designated:J03003 [UNS]1.0558 (GP240GH) [EN]

Reviewed by Materials Engineering, Vajra Industrial SolutionsDiscipline: Valve Metallurgy & Materials SelectionLast reviewed: 20 June 2026

Connected Engineering

Materials

A216 WCB Carbon Steel A217 WC9 Chrome-Moly A352 LCC Low-Temp

Need valves in GP240GH / its ASTM equivalent?

We supply A217 WC9 / A352 Grade LCC / A216 WCC / A352 LCB valves - the GP240GH equivalent - with EN 10204 3.1 material certification. Share the datasheet for a 24-hour quote.

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Engineering references

A217 WC9 full grade pageChrome-Moly WC9 (2.25Cr-1Mo)A352 Grade LCC full grade pageLow Temperature Carbon Steel LCC Equivalence MatrixAll 43 grades across 7 systems Designation lookup directoryEvery foreign designation indexed