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
What is ASTM B265 Gr 2 / ASTM B337 / UNS R50400 (Titanium Grade 2)?
ASTM B265 Gr 2 / ASTM B337 / UNS R50400 (Titanium Grade 2) (Titanium Grade 2 (Commercially Pure)) is a non ferrous valve material. 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. Temperature range: −196°C to +315°C (−321°F to +600°F).
- Form:
- both
- Max Temp:
- +315°C (+600°F)
- Min Temp:
- −196°C (−321°F)
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)
Vajra Industrial Solutions manufactures and supplies valves in ASTM B265 Gr 2 / ASTM B337 / UNS R50400 (Titanium Grade 2) (Titanium Grade 2 (Commercially Pure)) for seawater and subsea cooling water handling, with EN 10204 3.1 material traceability on every order.
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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)) valves with full certification documentation — EN 10204 3.1/3.2 MTCs and hydrotest certs as standard.