Equivalent lookup
Designation Cross-Reference

approx — ASTM Equivalent

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

What is the ASTM equivalent of approx?

approx is a EN designation corresponding to ASTM A352 Grade LCC (Low Temperature Carbon Steel LCC) and A350 Grade LF2 (Low Temperature Forged Carbon Steel LF2) 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.

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

A350 Grade LF2

Carbon Steel

Low Temperature Forged Carbon Steel LF2 - forged form.

Service temperature-46°C to +345°C
Nominal compositionC ≤ 0.30%, Mn 0.60–1.35%, Si 0.15–0.30%, P ≤ 0.035%, S ≤ 0.040%. Impact tested at −46°C.

Typical service: LNG satellite and transfer stations; LPG storage, loading, and transfer systems; Refrigeration piping and CO₂ service

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

Connected Engineering

Need valves in approx / its ASTM equivalent?

We supply A352 Grade LCC / A350 Grade LF2 valves - the approx equivalent - with EN 10204 3.1 material certification. Share the datasheet for a 24-hour quote.

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