Valve Material Reference
ASTM B265 Gr 2 / ASTM B337 / UNS R50400 (Titanium Grade 2) Valve
Titanium Grade 2 (Commercially Pure)Titanium Grade 2 (UNS R50400) is commercially pure titanium with outstanding corrosion resistance in seawater, oxidising acids (including nitric acid and fuming nitric acid), chlorine-containing media, and high-temperature aqueous solutions.
Form
Both
Max Temp
+315°C (+600°F)
Min Temp
−196°C (−321°F)
Category
Non Ferrous
Chemical Composition — ASTM B265 Gr 2 / ASTM B337 / UNS R50400 (Titanium Grade 2)
Temperature Range
−196°C to +315°C (−321°F to +600°F)
Maximum Temperature
+315°C (+600°F)
Minimum Temperature
−196°C (−321°F)
Equivalent Grades — ASTM B265 Gr 2 / ASTM B337 / UNS R50400 (Titanium Grade 2)
| Standard | Equivalent Grade |
|---|---|
| UNS | R50400 |
| ASTM | B265 Gr 2 (sheet), B337 Gr 2 (tube), B348 Gr 2 (bar) |
| EN | Ti Gr 2 / 3.7035 |
Suitable Services
Seawater and subsea cooling water handling
Nitric acid (HNO₃) at all concentrations
Chlorine gas and wet chlorine service
Hypochlorite manufacturing
High-purity semiconductor process gases
Hydrogen peroxide (H₂O₂) manufacturing
Not Suitable For
Reducing acids: HF (hydrofluoric), HCl (hydrochloric), concentrated H₂SO₄
Dry chlorine gas above 100°C — risk of titanium fire
Temperatures above 315°C in most service conditions
Valve Body Applications
Seawater handling valves for offshore platform cooling systems
Nitric acid (HNO₃) plant valve bodies
Chlorine and chlorinated water service valves
Aggressive inorganic acid valve bodies where stainless steels fail
Trim Applications
Ball valve balls and seats — solid titanium or titanium substrate with hard coating
Needle valve bodies for instrumentation in seawater sampling systems
Typical Valve Types in ASTM B265 Gr 2 / ASTM B337 / UNS R50400 (Titanium Grade 2)
Ball valves: seawater injection, Class 150–600
Gate valves: nitric acid service
Needle valves: seawater instrumentation sampling
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We supply ASTM B265 Gr 2 / ASTM B337 / UNS R50400 (Titanium Grade 2) (Titanium Grade 2 (Commercially Pure)) gate valves, globe valves, ball valves, check valves, and more. Full certification documentation — EN 10204 3.1/3.2 MTCs, hydro test certs — as standard.