ASTM B861 Gr 19 Titanium Seamless Pipe (UNS R58640)
ASTM B861 Gr 19 (UNS R58640) seamless titanium pipe is a high-strength beta titanium alloy containing aluminum, vanadium, chromium, molybdenum, and zirconium. It offers an exceptional combination of strength, fatigue resistance, fracture toughness, and corrosion resistance, making it ideal for aerospace, chemical processing, and high-performance industrial applications where weight reduction and durability are critical.
Key Features
- High strength-to-weight ratio among titanium alloys
- Excellent fatigue and fracture toughness
- Superior corrosion resistance in aggressive environments
- Good weldability and formability in solution-treated condition
- Suitable for high-stress and high-temperature applications
Equivalent Grades
- ASTM: Grade 19
- UNS: R56320
- Alloy Name: Titanium Ti-3Al-2.5V
Sizes
- Outside Diameter: 6 mm to 114.3 mm
- Wall Thickness: 0.5 mm to 10 mm
- Length: Random, Single Random, Double Random, Cut Length
ASTM B861 Gr 19 Chemical Composition
| Element | Content (%) |
|---|---|
| Aluminum (Al) | 2.5 – 3.5 |
| Vanadium (V) | 2.0 – 3.0 |
| Iron (Fe) | ≤ 0.30 |
| Oxygen (O) | ≤ 0.25 |
| Carbon (C) | ≤ 0.08 |
| Nitrogen (N) | ≤ 0.05 |
| Hydrogen (H) | ≤ 0.015 |
| Titanium (Ti) | Balance |
Gr 19 Mechanical Properties
| Property | Value |
|---|---|
| Tensile Strength | ≥ 620 MPa |
| Yield Strength | ≥ 483 MPa |
| Elongation | ≥ 15% |
| Hardness | ≤ 36 HRC |
UNS R58640 Physical Properties
| Property | Value |
|---|---|
| Density | 4.48 g/cm³ |
| Melting Point | ~1660 °C |
| Modulus of Elasticity | 105 GPa |
| Thermal Conductivity | 6.7 W/m·K |
Type of Grades 19 Pipes
- Seamless Round Pipe
- Precision Titanium Tubing
- Heat Exchanger Tubes
- Aerospace Tubes
Applications
- Aerospace hydraulic and structural tubing
- Chemical processing equipment
- Marine and offshore piping systems
- Power generation and heat exchangers
- High-performance industrial fluid lines
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