Designation Cross-Reference

NiCr22Mo9Nb — ASTM Equivalent

Holding a datasheet that specifies NiCr22Mo9Nb (EN)? The valve-grade equivalent, its properties, and certified supply of the matching ASTM grade.

What is the ASTM equivalent of NiCr22Mo9Nb?

NiCr22Mo9Nb is a EN designation corresponding to ASTM B443 / UNS N06625 (Inconel 625) (Inconel 625 / Alloy 625) 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.

B443 / UNS N06625 (Inconel 625)

Nickel Alloys

Inconel 625 / Alloy 625 - both form.

Service temperature-196°C to +980°C

Nominal compositionNi ≥ 58%, Cr 20–23%, Mo 8–10%, Nb+Ta 3.15–4.15%, Fe ≤ 5%, Al ≤ 0.40%, Ti ≤ 0.40%.

Typical service: Seawater and subsea service (HP/HT wells, HPHT risers); Chloride-rich process streams and acid chloride mixtures; Acid gas (CO₂ + H₂S) injection wells

Also designated:N06625 [UNS]NiCr22Mo9Nb [EN]2.4856 [EN]

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

Connected Engineering

Materials

Inconel 625

Need valves in NiCr22Mo9Nb / its ASTM equivalent?

We supply B443 / UNS N06625 (Inconel 625) valves - the NiCr22Mo9Nb equivalent - with EN 10204 3.1 material certification. Share the datasheet for a 24-hour quote.

Request a Quote WhatsApp Call

Products

Browse All Valve Products

Engineering references

B443 / UNS N06625 (Inconel 625) full grade pageInconel 625 / Alloy 625 Equivalence MatrixAll 43 grades across 7 systems Designation lookup directoryEvery foreign designation indexed