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R50400 — ASTM Equivalent

Holding a datasheet that specifies R50400 (UNS)? The valve-grade equivalent, its properties, and certified supply of the matching ASTM grade.

What is the ASTM equivalent of R50400?

R50400 is a UNS designation corresponding to ASTM B265 Gr 2 / ASTM B337 / UNS R50400 (Titanium Grade 2) (Titanium Grade 2 (Commercially Pure)) 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.

B265 Gr 2 / ASTM B337 / UNS R50400 (Titanium Grade 2)

Non-Ferrous

Titanium Grade 2 (Commercially Pure) - both form.

Service temperature-196°C to +315°C
Nominal compositionTi ≥ 99.3%, O ≤ 0.25%, Fe ≤ 0.30%, N ≤ 0.03%, H ≤ 0.015%, C ≤ 0.08%.

Typical service: Seawater and subsea cooling water handling; Nitric acid (HNO₃) at all concentrations; Chlorine gas and wet chlorine service

Also designated:R50400 [UNS]Ti Gr 2 [EN]3.7035 [EN]
Reviewed by Materials Engineering, Vajra Industrial SolutionsDiscipline: Valve Metallurgy & Materials SelectionLast reviewed: 20 June 2026

Need valves in R50400 / its ASTM equivalent?

We supply B265 Gr 2 / ASTM B337 / UNS R50400 (Titanium Grade 2) valves - the R50400 equivalent - with EN 10204 3.1 material certification. Share the datasheet for a 24-hour quote.

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Engineering references

B265 Gr 2 / ASTM B337 / UNS R50400 (Titanium Grade 2) full grade pageTitanium Grade 2 (Commercially Pure)Equivalence MatrixAll 43 grades across 7 systemsDesignation lookup directoryEvery foreign designation indexed