Titanium Grade 2 (UNS R50400)
Titanium Grade 2 (UNS R50400) — Commercially pure titanium for seawater and chloride service.
| UNS number | R50400 |
| Material family | Titanium |
| Product specifications | B381 F2, B363 WPT2, B861/B862 |
| Density (typical) | 4.51 g/cm³ (4510 kg/m³) |
| Weight of 6" Sch 40 pipe | 16.24 kg/m |
Specifications by product form
One alloy is ordered under different ASTM/ASME numbers depending on form: forged flanges and fittings, wrought buttweld fittings, and pipe or tube. For Titanium Grade 2 the usual specifications are B381 F2, B363 WPT2, B861/B862. Quote both the specification and the UNS number on purchase orders to avoid ambiguity.
Chemical and mechanical limits differ between these specifications — always check the edition of the standard named on your order and the mill test certificate.
Chemical composition & mechanical properties
| Property | Titanium Gr 2 |
|---|---|
| Family | Titanium |
| UNS | R50400 |
| EN / W.Nr | 3.7035 Ti Grade 2 |
| Basis spec | ASTM B381 |
| Density g/cm³ | 4.51 |
| Chemical composition, % | |
| C | 0.08 |
| N | 0.03 |
| Fe | 0.30 |
| O | 0.25 |
| Mechanical properties (min) | |
| Tensile strength | 345 MPa (50 ksi) |
| Yield strength (0.2%) | 275 MPa (40 ksi) |
| Elongation | 20% |
| Hardness (max) | – |
| PREN (min, from spec) | – |
Single values are maximums; ranges are min–max; "bal" = balance. Limits are typical of the basis specification for that product form — forgings, pipe and fittings specifications differ slightly. Always check the exact specification, edition and the mill test certificate.
Frequently asked questions
What is the UNS number of Titanium Grade 2?
R50400.
Which ASTM specifications cover Titanium Grade 2?
B381 F2, B363 WPT2, B861/B862.
What is the density of Titanium Grade 2?
About 4.51 g/cm³ (4510 kg/m³), used for weight calculations.
Last updated 2026-11-02