ASME SB338 Grade 7 Titanium Seamless Tube | UNS R52400 Heat Exchanger Tubing
ASME SB338 Grade 7 Titanium Seamless Tube | UNS R52400 Heat Exchanger Tubing
ASME SB338 ASTM B338 Grade 7 Titanium Seamless Tube
ASME SB338 Grade 7 titanium seamless tube is manufactured from UNS R52400 titanium alloy containing palladium, providing significantly enhanced corrosion resistance compared with commercially pure titanium grades.
Grade 7 titanium tubing combines excellent strength-to-weight ratio, outstanding resistance to chloride corrosion, pitting and crevice attack, making it an ideal choice for heat exchangers, condensers, desalination plants, chemical processing equipment and offshore engineering applications.
Manufactured in accordance with ASTM B338 and ASME SB338 standards, the tubes are supplied in seamless construction with strict dimensional tolerances and comprehensive inspection requirements. Various sizes, wall thicknesses and lengths can be customized to meet specific project demands.
With superior performance in aggressive environments, Titanium Grade 7 seamless tubes help extend equipment service life while reducing maintenance costs and downtime.
Product Advantages
-
Superior corrosion resistance in acidic and chloride environments
-
Palladium-enhanced titanium alloy for extended service life
-
Excellent resistance to pitting and crevice corrosion
-
High strength-to-weight ratio
-
Outstanding heat transfer performance
-
Suitable for seawater and desalination systems
-
Long-term reliability in aggressive chemical environments
-
Available in customized dimensions and lengths
| Parameter | Specification |
|---|---|
| Product Name | Titanium Grade 7 Seamless Tube |
| Standard | ASTM B338 / ASME SB338 |
| Material Grade | Grade 7 |
| UNS Number | R52400 |
| Material Type | Titanium-Palladium Alloy |
| Manufacturing Process | Seamless |
| Outside Diameter | 6mm – 114mm |
| Wall Thickness | 0.5mm – 10mm |
| Length | Up to 18000mm |
| Surface Finish | Pickled, Polished, Annealed |
| End Type | Plain End |
| Inspection | PMI, UT, Hydrostatic Test |
| Certification | EN10204 3.1 / ISO 9001 |
| Origin | China |
ASME SB338 GR.7 CHEMICAL COMPOSITION
| Element | Ti Alloy Gr.7 |
| C | 0.08 max |
| Fe | 0.30 max |
| Ti | Bal |
| H | 0.015 max |
| Pd | 0.12 - 0.25 |
| O | 0.25 max |
| Al | - |
| N | 0.03 max |
ASME SB338 GR.7 MECHANICAL PROPERTIES
| Element | Titanium Alloy Gr7 |
| Density | 0.163 lb/in3 |
| Tensile Strength | 50 |
| Yield Strength (0.2%Offset) | 40/65 |
| Elongation | 20% |
ASME SB338 GR.7 PHYSICAL PROPERTIES
| Beta Transus (F ± 25) | 1675 | ||||
| Coefficient of Thermal Expansion (10-6in./in./F) | 32-212 | 4.8 | |||
| 32-600 | 5.1 | ||||
| 32-1000 | 5.4 | ||||
| 32-1200 | 5.6 | ||||
| 32-1500 | 5.6 | ||||
| Density (lbs./cu. in.) | 0.163 | ||||
| Melting Point, Approx (F) | 3020 | ||||
| Electrical Resistivity at Room Temp. (Microhms cm) | 56 | ||||
| Modulus Elasticity – Tension (106 psi) | 14.9 | ||||
| Modulus Elasticity – Torsion (106 psi) | 6.5 | ||||
| Thermal Conductivity | 9.5 at Room Temperature | ||||
| (Btu/hr/sq. ft./F/ft.) | |||||
| Specific Heat (Btu/lb./F) at Room Temp. | 0.124 | ||||
| Weldability | Good | ||||
| Annealing Temp. (F) | Full | 1300°/30 Min. – 2 Hrs,; Air Cool | |||
| Stress Relief | 1000-1100°/30 Min.; Air Cool | ||||
| Forging* Temp. (F) | Blocking | 1600-1700° | |||
| Finishing | 1500-1600° | ||||
| Available Mill Products | Tube, Tubing | ||||
| Typical Application | For corrosion resistance in the chemical industry where media is mildly reducing | ||||
| or varies between oxidizing and reducing. | |||||
| Industry Specifications | ASTM | ||||
| F338 Grade 7 | |||||
Application
- Food Processing Industry
- Fabrication Industry
- Oil and Gas Industry
- Chemical Industry
- Plumbing
- General Purpose Applications
- Heating
- Water Supply Systems
- Power Plant
- Paper and Pulp Industry
Get in Touch
Have questions about our products or want to discuss a custom order? Our team is ready to help you.