Designation Cross-Reference

GS-C25 — ASTM Equivalent

Holding a datasheet that specifies GS-C25 (DIN/EN)? The valve-grade equivalent, its properties, and certified supply of the matching ASTM grade.

What is the ASTM equivalent of GS-C25?

GS-C25 is a DIN/EN designation corresponding to ASTM A216 WCB (Carbon Steel WCB) 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.

A216 WCB

Carbon Steel

Carbon Steel WCB - cast form.

Service temperature-29°C to +538°C

Nominal compositionC ≤ 0.30%, Mn ≤ 1.00%, Si ≤ 0.60%, P ≤ 0.035%, S ≤ 0.035%. Carbon equivalent: Ceq ≤ 0.50%.

Typical service: Steam service (up to Class 1500 with IBR certification); Water, cooling water, firewater; Crude oil and petroleum products

Also designated:161 Grade 430 [BS 1504]GS-C25 [DIN/EN]1.0619 [DIN/EN]SCPH2 [JIS]

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

Connected Engineering

Materials

A216 WCB Carbon Steel

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Engineering references

A216 WCB full grade pageCarbon Steel WCB Equivalence MatrixAll 43 grades across 7 systems Designation lookup directoryEvery foreign designation indexed