Equivalent lookup
Designation Cross-Reference

UNS N06625, ASTM B564 N06625 — ASTM Equivalent

Holding a datasheet that specifies UNS N06625, ASTM B564 N06625 (CW6MC / Alloy 625)? The valve-grade equivalent, its properties, and certified supply of the matching ASTM grade.

What is the ASTM equivalent of UNS N06625, ASTM B564 N06625?

UNS N06625, ASTM B564 N06625 is a CW6MC / Alloy 625 designation corresponding to ASTM A494 CW6MC / CW12MW (Hastelloy C-276 / Inconel 625 Cast) 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.

A494 CW6MC / CW12MW

Nickel Alloys

Hastelloy C-276 / Inconel 625 Cast - cast form.

Service temperature-196°C to +1040°C
Nominal compositionCW6MC: Ni ≥ 58%, Cr 20–23%, Mo 8–10%, Nb+Ta 3.15–4.15%. CW12MW (C-type): Ni ≥ 54%, Cr 15.5–17.5%, Mo 16–18%, W 3.75–5.25%.

Typical service: Sulphuric acid (all concentrations and temperatures); Hydrochloric acid (all concentrations); Hydrofluoric acid (with care)

Also designated:UNS N06625, ASTM B564 N06625 (forged) [CW6MC / Alloy 625]UNS N10276, ASTM B574 [CW12MW / Hastelloy C]B564 N10276 [CW12MW / Hastelloy C]
Reviewed by Materials Engineering, Vajra Industrial SolutionsDiscipline: Valve Metallurgy & Materials SelectionLast reviewed: 20 June 2026

Connected Engineering

Materials
Inconel 625Hastelloy C-276

Need valves in UNS N06625, ASTM B564 N06625 / its ASTM equivalent?

We supply A494 CW6MC / CW12MW valves - the UNS N06625, ASTM B564 N06625 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

A494 CW6MC / CW12MW full grade pageHastelloy C-276 / Inconel 625 CastEquivalence MatrixAll 43 grades across 7 systemsDesignation lookup directoryEvery foreign designation indexed