GX40CrNi25-12 — ASTM Equivalent
Holding a datasheet that specifies GX40CrNi25-12 (DIN)? The valve-grade equivalent, its properties, and certified supply of the matching ASTM grade.
What is the ASTM equivalent of GX40CrNi25-12?
GX40CrNi25-12 is a DIN designation corresponding to ASTM A351 HH (25Cr-12Ni Heat-Resistant Casting (Grade HH)) 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.
A351 HH
Stainless Steel25Cr-12Ni Heat-Resistant Casting (Grade HH) - cast form.
Typical service: Fluid catalytic cracking (FCC) regenerator circuit - temperatures 680–750°C, sulphur + catalyst dust; Catalytic reformer outlet manifolds - temperatures 500–550°C, H₂-rich atmosphere; Sulphur plant Claus converter outlet - temperatures 300–600°C, H₂S + SO₂ + liquid sulphur
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Need valves in GX40CrNi25-12 / its ASTM equivalent?
We supply A351 HH valves - the GX40CrNi25-12 equivalent - with EN 10204 3.1 material certification. Share the datasheet for a 24-hour quote.