| After-sales Service: | Supplied |
|---|---|
| Warranty: | Supplied |
| Type: | Seamless |
| Technique: | Cold Drawn |
| Material: | Titanium |
| Surface Treatment: | Polished |
| Samples: |
|---|
| Customization: |
|---|
Suppliers with verified business licenses
Audited Supplier | Specification: | ASME SB338, ASTM B338 | Grade: | GR7 |
|---|---|---|---|
| Type: | Seamless/Welded | Size Standard: | ASTM B16.10 & B16.19 & Customized |
| Surface: | Polishing Or Unpolishing | Certification: | ISO/CE/SGS |
| High Light: |
Condensers Ti Alloy Tube,GR7 Ti Alloy Tube,ASME SB338 Alloy Steel Seamless Tubes |
||
ASME SB338 GR7 UNS R52400 Ti Alloy Tube Condensers and Heat Exchangers
ASME SB338 is the standard specification for seamless and welded titanium and titanium alloy tubes or tubing which are intended for surface condensers, evaporators, and heat exchangers. It is identical with ASTM B338 except for some minor difference in product marking. There are 28 grades of titanium and titanium alloys for tubing purpose, among which Titanium Grade 2, Grade 7 and Grade 12 are most often seen in tubing applications.
Titanium Alloy Grade 7 has outstanding corrosion resistance and useful strength at low density. A small addition of palladium has been made to this alloy for a substantial increase in corrosion resistance.
Chemical Composition Of GR7
| Element | Chemical Composition % |
| Grade 7 | |
| Nitrogen, max | 0.03 |
| Carbon, max | 0.08 |
| Hydrogen, max | 0.015 |
| Iron, max | 0.30 |
| Oxygen, max | 0.25 |
| Aluminum | … |
| Vanadium | … |
| Tin | … |
| Ruthenium | … |
| Palladium | 0.12-0.25 |
| Molybdenum | … |
| Chromium | … |
| Nickel | … |
| Niobium | … |
| Ziconium | … |
| Silicon | … |
| Residuals, max each | 0.1 |
| Residuals, max total | 0.4 |
| Titanium | balance |
Titanium Grade 7 Tubing Mechanical Properties
| Grade | Titanium Alloy Gr7 |
| Density | 0.163 lb/in3 |
| Tensile Strength | 50 |
| Yield Strength (0.2%Offset) | 40/65 |
| Elongation | 20% |
Titanium Grade 7 Tubing 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 (Btu/hr/sq. ft./F/ft.) |
9.5 at Room Temperature | ||||
| 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. |
||||
GR7 Material Equivalent
| STANDARD | WERKSTOFF NR. | UNS |
| Titanium Grade 7 | 3.7235 | R52400 |
Applications
-Chlorination systems
-Flue gas scrubbers
-Outlet ducting and stack liners for power plants, pulp and paper bleach plants, sulfur dioxide scrubbers, and weld overlay of less corrosion resistant metals
-Acid production and pickling systems
-Pharmaceutical industries use alloy fittings and tubing to avoid contamination caused by corrosion related failures
-Cellophane manufacturing
-Chlorination systems
Suppliers with verified business licenses
Audited Supplier 
){kind=link}
){kind=link}