概述
A Titanium Grade 2 (UNS R50400) stub end is a butt-weld pipe fitting used in conjunction with a lap joint flange (Type B) to form a flanged joint. The stub end is butt-welded to the pipe, while the lap joint flange slides freely over the stub end's lap, allowing easy alignment and rotation. Titanium Grade 2 is commercially pure (CP) titanium, offering excellent corrosion resistance, good formability, and moderate strength, making it the most widely used titanium grade for stub ends in chemical processing, marine, and offshore applications.
描述（英文）
A Titanium Grade 2 (UNS R50400) stub end is a butt-weld pipe fitting used in conjunction with a lap joint flange (Type B) to form a flanged joint. The stub end is butt-welded to the pipe, while the lap joint flange slides freely over the stub end's lap, allowing easy alignment and rotation. Titanium Grade 2 is commercially pure (CP) titanium, offering excellent corrosion resistance, good formability, and moderate strength, making it the most widely used titanium grade for stub ends in chemical processing, marine, and offshore applications.
尺寸范围
- Sch10s-sch160 or custom
牌号标准
| 标准体系 | 数值 |
|---|---|
| 🇺🇸 UNS | R50400 |
| 🇺🇸 ASTM | Grade 2 (CP Titanium) |
| 🇩🇪 DIN | 3.7035 (Ti 2) |
| 🇪🇺 EN | EN AW – CP Titanium Grade 2 |
| 🇯🇵 JIS | Class 2 (TP340C) |
| 🇬🇧 BS | TA2 / TA2-CP |
| 🇨🇳 GB | TA2 |
| 🇷🇺 GOST | VT1-0 |
| 🇺🇸 ASME | SB-363 WP Grade 2 |
化学成分
| 元素 | 数值 |
|---|---|
| C | ≤ 0.08 |
| N | ≤ 0.03 |
| H | ≤ 0.015 |
| Fe | ≤ 0.30 |
| O | ≤ 0.25 |
| Ti | Remainder |
机械性能
| productCenter.property | 数值 |
|---|---|
| Tensile Strength (MPa) | ≥ 345 |
| Yield Strength (MPa, 0.2% offset) | ≥ 275 |
| Elongation (%) | ≥ 20 |
| Reduction of Area (%) | ≥ 30 |
| Hardness (HV) | ~145 |
| Elastic Modulus (GPa) | 103 |
| Modulus of Rigidity (GPa) | 44 |
| Poisson's Ratio | 0.37 |
| Fatigue Strength (MPa, 10⁷ cycles) | ~140 |
物理性能
| 性能 | 单位 | 数值 |
|---|---|---|
| Density (g/cm³) | g/cm³ | 4.51 |
| Melting Point (°C) | °C | 1668 |
| Beta Transus (°C) | - | 890 |
| Coefficient of Thermal Expansion (µm/m·°C, 0–100°C) | ×10⁻⁶/K | 8.6 |
| Thermal Conductivity (W/m·K, 25°C) | W/m·K | 17.0 |
| Electrical Resistivity (nΩ·m, 25°C) | μΩ·cm | 564 |
| Specific Heat (J/kg·K) | J/kg·K | 523 |
| Electrical Conductivity (% IACS) | - | 3.1 |
| Crystal Structure | - | HCP (Alpha) |
应用场景
- Chemical Processing
- Marine & Offshore
- Power Generation
- Oil & Gas
- Aerospace & Defense
- Pharmaceutical & Food