What are the properties of Titanium Gr2 Flanges?
Titanium Grade 2 flanges are commercially pure titanium pressure-connection components selected primarily for corrosion resistance, moderate strength and weldability. The material grade, flange construction, dimensions, pressure-temperature rating and inspection basis must all be specified; “Grade 2” alone is not a complete purchase description.
Grade 2 Flange Properties at a Glance
| Property | Engineering relevance |
|---|---|
| UNS R50400 | Identifies commercially pure Titanium Grade 2 chemistry |
| Corrosion resistance | Useful in many oxidizing, chloride-bearing and seawater services, subject to actual chemistry and temperature |
| Ductility and weldability | Supports forming and qualified inert-gas-shielded fabrication |
| Moderate strength | Requires design against the applicable allowable stress and service code |
Which Standards Apply?
For forged titanium flanges, ASTM B381 is a relevant material specification and identifies Grade F-2 for UNS R50400. Flange dimensions and ratings may be specified to an applicable standard such as ASME B16.5 when the design and material coverage permit it. Nickel-alloy fitting specifications must not be substituted for the titanium Grade 2 flange material specification. Always state the required edition and project code.
Information Required for a Quote
- Grade and material specification
- Flange type, nominal size, class or design pressure and facing
- Dimensional standard or controlled drawing
- Bore, wall or mating pipe schedule where relevant
- Quantity, inspection, testing, marking and certification
FAQ
Does corrosion resistance determine the pressure rating?
No. Corrosion behaviour and pressure-temperature capacity are separate checks. Rating depends on flange design, material allowable stress, temperature, dimensions, bolting, gasket and governing code.
Can Grade 2 titanium be connected directly to another metal?
It may be possible, but galvanic compatibility, isolation, crevice geometry, gasket selection and the service electrolyte require engineering review.
Continue to Grade 2 Flange Selection
Review Titanium Grade 2 Flanges and the Titanium Flange category. Send grade, standard, type, size, class, facing, quantity and documentation through the Titanium RFQ Checklist.