概述
Titanium Grade 2 (also known as Commercially Pure Titanium, CP Ti Gr.2) is an unalloyed titanium grade offering an excellent balance of moderate strength, exceptional corrosion resistance, outstanding formability, and good weldability. It is the most widely used grade of commercially pure titanium, often serving as the workhorse titanium for industrial, marine, and chemical processing applications where high corrosion resistance is required but the strength of higher grades is unnecessary.
描述（英文）
Grade 2 is the default choice for chemical processing, marine hardware, heat exchangers, medical implants, and any application where corrosion resistance and biocompatibility are paramount. For higher strength requirements, Grade 5 (Ti-6Al-4V) or Grade 23 (Ti-6Al-4V ELI) are typically specified.
尺寸范围
- Thickness: up to 150 mm+ custom
- Width: 500 mm – 2,540 mm (20" – 100")
- Length: 1,000 mm – 6,096 mm (40" – 240")
牌号标准
| 标准体系 | 数值 |
|---|---|
| 🇺🇸 UNS | R50400 |
| 🇺🇸 ASTM | Grade 2 (CP Titanium) |
| 🇺🇸 AMS | AMS 4902 |
| 🇩🇪 DIN | 3.7035 |
| 🇪🇺 EN | Grade 2 (Ti2) |
| 🇯🇵 JIS | TP340H / Class 2 |
| 🇨🇳 GB | TA2 (GB/T 3620.1) |
| 🇷🇺 GOST | BT1-0 (approximate; lower O) |
| ASTM F67 | Grade 2 (implant grade) |
化学成分
| 元素 | 数值 |
|---|---|
| Ti | ≥ 99.0 |
| Fe | 0.30 |
| O | 0.25 |
| C | 0.10 |
| N | 0.03 |
| H | 0.015 |
| Other (each) | 0.10 |
| Other (total) | 0.40 |
机械性能
| productCenter.property | 数值 |
|---|---|
| Tensile Strength Rm | ≥ 345 MPa |
| Yield Strength Rp0.2 | ≥ 275 MPa |
| Elongation A (50 mm) | ≥ 20% |
物理性能
| 性能 | 单位 | 数值 |
|---|---|---|
| Density | g/cm³ | 4.51 g/cm³ (0.163 lb/in³) |
| Melting Point | °C | ~1,660 °C (3,020 °F) |
| Boiling Point | - | ~3,287 °C (5,949 °F) |
| Modulus of Elasticity | GPa | 105 GPa (15.2 × 10⁶ psi) |
| Shear Modulus | - | 42 – 45 GPa |
| Poisson's Ratio | - | 0.34 – 0.37 |
| Thermal Conductivity (20°C) | W/m·K | 17 – 21.9 W/(m·K) |
| Specific Heat (20°C) | J/kg·K | 0.523 J/(g·K) |
| Coefficient of Thermal Expansion (20–100°C) | ×10⁻⁶/K | 8.6 ppm/°C (4.8 ppm/°F) |
| Electrical Resistivity | μΩ·cm | 0.55 – 0.58 μΩ·m |
| Electrical Conductivity | - | ~3% IACS |
应用场景
- Chemical Processing
- Marine / Seawater
- Power Generation
- Medical / Pharmaceutical
- Aerospace
- Industrial