Gr.7 Titanium Alloy Rods - Reactors for Strong Acid Environments, Piping for Nuclear Industry
Product Overview
Titanium Alloy Grade 7 rods, designated as UNS R52400, are renowned for their exceptional corrosion resistance, particularly in reducing and oxidizing environments. This superior performance is primarily due to the addition of palladium (0.12–0.25%) to commercially pure titanium, enhancing its resistance to aggressive media such as hydrochloric and sulfuric acids. Maintaining the mechanical properties of Grade 2 titanium, Grade 7 offers improved durability in challenging conditions.
These rods are extensively utilized in industries where corrosion resistance is paramount, including chemical processing, marine engineering, and medical applications. Their ability to withstand harsh environments makes them ideal for components like heat exchangers, reactor vessels, and piping systems. Additionally, the biocompatibility of titanium ensures suitability for medical implants and devices.
Conforming to ASTM B348 standards, Titanium Grade 7 rods are available in various sizes and finishes, catering to diverse application requirements. Their combination of strength, corrosion resistance, and formability positions them as a reliable choice for critical applications across multiple sectors.
Chemical Composition (ASTM B348)
| Element |
Maximum Content (%) |
| Nitrogen (N) |
0.03 |
| Carbon (C) |
0.08 |
| Hydrogen (H) |
0.015 |
| Iron (Fe) |
0.30 |
| Oxygen (O) |
0.25 |
| Palladium (Pd) |
0.12–0.25 |
| Titanium (Ti) |
Balance |
Mechanical Properties (Annealed Condition)
| Property |
Value |
| Tensile Strength |
≥ 345 MPa |
| Yield Strength (0.2% offset) |
≥ 275 MPa |
| Elongation |
≥ 20% |
| Reduction of Area |
≥ 30% |
Physical Properties
| Property |
Value |
| Density |
4.51 g/cm³ |
| Melting Point |
1668°C |
| Modulus of Elasticity |
103 GPa |
| Thermal Conductivity |
11.4 W/m·K |
| Electrical Resistivity |
0.42 µΩ·m |
Applications
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Chemical Processing: Ideal for equipment handling corrosive substances, such as reactors, heat exchangers, and piping systems.
-
Marine Engineering: Suitable for components exposed to seawater, including propeller shafts and offshore structures.
-
Medical Devices: Used in surgical implants and prosthetics due to excellent biocompatibility.
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Desalination Plants: Employed in systems where resistance to brine and chloride-rich environments is essential.
-
Power Generation: Applicable in condenser tubing and other components exposed to aggressive cooling waters.
Frequently Asked Questions
Q1: What distinguishes Titanium Grade 7 from other titanium grades?
A1: The addition of palladium in Grade 7 enhances its corrosion resistance, especially in reducing environments, setting it apart from other commercially pure titanium grades.
Q2: Can Titanium Grade 7 rods be welded?
A2: Yes, they exhibit good weldability. However, appropriate precautions should be taken to prevent contamination during the welding process.
Q3: Are these rods suitable for high-temperature applications?
A3: Titanium Grade 7 maintains its properties up to approximately 300°C, making it suitable for various high-temperature applications.
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