Titanium Grade 2 (UNS R50400) Seamless Pipes & Tubes Manufacturer & Supplier
Titanium Grade 2 (UNS R50400) is the workhorse commercially pure titanium grade, offering an exceptional balance of corrosion resistance, formability and weldability at roughly 56% the density of steel. Its self-healing TiO2 passive film makes it immune to seawater, oxidizing acids and wet chlorine, and its low ionic leaching suits ultra-pure water and semiconductor wet-processing service.
UNS: R50400 | Category: Commercially Pure Titanium | Werkstoff Nr: 3.7035 | EN Name: Ti Grade 2 / Ti99.5
Size Range
Outer Diameter: 1/4" NPS to 6" NPS (6.35mm to 168.3mm OD)
Wall Thickness: SCH 5S to SCH 40S
Chemical Composition (%)
| Ti | Fe | O | C | N | H |
|---|---|---|---|---|---|
| Remainder | 0.30 max | 0.25 max | 0.08 max | 0.03 max | 0.015 max |
Mechanical Properties
- Tensile Strength
- 345 MPa min
- Yield Strength
- 275-450 MPa
- Elongation
- 20% min
- Hardness
- N/A
Physical Properties
- Density
- 4.51 g/cm3
- Melting Range
- 1660-1670 C
- Thermal Conductivity
- 16.4 W/m-K
- Electrical Resistivity
- 560 nOhm-m
- Specific Heat
- 523 J/kg-K
- Coeff. of Thermal Expansion
- 8.6 um/m-C
Corrosion Resistance
- Pitting Resistance (PREN)
- N/A (passive TiO2 film)
- Max Service Temp (Oxidizing)
- 425 C
- Intergranular Corrosion
- Immune
- Stress Corrosion Cracking
- Immune in chlorides
- General Corrosion Rate
- <0.005 mm/yr in seawater, nitric acid and wet chlorine
- Seawater Resistance
- Outstanding - immune to pitting and crevice corrosion
Applicable Standards
- ASTM B338 / ASME SB338
- ASTM B861 / ASME SB861
- ASTM B862
- DIN 17861
Applications
- Semiconductor wet-bench acid piping (HNO3, chromic and mixed acids)
- Ultra-pure water and DI water heat exchangers
- Seawater condensers and desalination
- Chlor-alkali and bleaching plants
- Pharmaceutical and food-grade heat exchangers
- Chemical process cooling loops
Industries Served
- Semiconductor & Electronics
- Desalination
- Chemical Processing
- Marine
- Power Generation
Key Advantages
- Immune to seawater and chloride pitting and crevice corrosion
- Excellent in oxidizing acids (nitric, chromic) and wet chlorine
- Very low metal-ion leaching into ultra-pure water
- Half the weight of stainless steel for equivalent wall
- Non-magnetic and biocompatible
- Fully weldable with standard GTAW under inert shielding
Equivalent Grades
- ASTM
- Grade 2
- Trade
- CP Titanium Gr.2
- DIN
- 3.7035