ASTM B338 Grade 1 Titanium Seamless Pipe & Tube (UNS R50250)
ASTM B338 Grade 1 (UNS R50250) covers seamless and welded titanium pipes and tubes manufactured from commercially pure titanium. Grade 1 offers excellent corrosion resistance, outstanding formability, and superior weldability, making it ideal for chemical processing, marine, aerospace, and heat exchanger applications where purity and corrosion resistance are critical.
Key Features
- Commercially pure titanium with maximum corrosion resistance
- Excellent resistance to seawater, chlorides, and oxidizing environments
- Superior ductility and cold formability
- Lightweight with high strength-to-weight ratio
- Excellent weldability and fabrication characteristics
- Suitable for high-purity and hygienic applications
Equivalent Grade
| Standard | Equivalent |
|---|---|
| UNS | R50250 |
| ASTM | Titanium Grade 1 |
| DIN | 3.7025 |
| ISO | Ti Grade 1 |
| JIS | TP270 |
Sizes
- Outside Diameter (OD): 1/8” to 12”
- Wall Thickness: 0.5 mm to 12 mm
- Length: Random, Double Random, or Cut Length
ASTM B338 Gr 1 Chemical Composition
| Element | Composition (%) |
|---|---|
| Titanium (Ti) | Balance |
| Iron (Fe) | ≤ 0.20 |
| Oxygen (O) | ≤ 0.18 |
| Carbon (C) | ≤ 0.08 |
| Nitrogen (N) | ≤ 0.03 |
| Hydrogen (H) | ≤ 0.015 |
Gr 1 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 240 MPa |
| Yield Strength | ≥ 170 MPa |
| Elongation | ≥ 24% |
UNS R50250 Physical Properties
| Property | Value |
|---|---|
| Density | 4.51 g/cm³ |
| Melting Point | 1668°C |
| Thermal Conductivity | 16.4 W/m·K |
| Modulus of Elasticity | 105 GPa |
| Electrical Resistivity | 42 µΩ·cm |
Type of ASTM B338 Gr 1 Pipes
- Seamless Titanium Pipe
- Welded Titanium Pipe
- Heat Exchanger Tubes
- Condenser Tubes
- Instrumentation Tubing
Applications
- Chemical processing equipment
- Heat exchangers and condensers
- Marine and offshore piping systems
- Aerospace hydraulic and fuel lines
- Desalination plants
- Pharmaceutical and food processing industries
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