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ASTM B862 Titanium Welded Tube
, Gr5 Titanium Welded Tube
, Gr7 Titanium Welded Tube
ASTM B862 Gr1 Gr2 Gr5 Gr7 Titanium Welded Tube Ti Welding Titanium Tubing
ASTM B862 Gr1 Gr2 Gr5 Gr7 Titanium Welded Tube Ti Welding Titanium Tubing
Introduction of Titanium Seamless Tube and Titanium Tube:
Titanium seamless tubes and titanium tubes are essential components in various industries due to titanium's exceptional properties. Here's an introduction to each:
Titanium Seamless Tube:
-
Definition: A titanium seamless tube is manufactured from titanium alloys using a seamless process, ensuring a uniform structure without welded seams.
-
Properties: Seamless tubes offer high strength, excellent corrosion resistance, and superb mechanical properties. They are lightweight yet robust, making them suitable for applications where weight reduction and durability are critical.
-
Manufacturing: Produced through processes like extrusion or cold drawing, ensuring precise dimensions and consistent quality. The seamless construction minimizes the risk of defects compared to welded tubes.
Titanium Tube:
-
Definition: Titanium tubes encompass a broader range of titanium tube types, including seamless, welded, and other forms, depending on manufacturing processes and applications.
-
Properties: Similar to seamless tubes, titanium tubes exhibit exceptional corrosion resistance, high strength-to-weight ratio, and biocompatibility. They are available in various grades and sizes to meet specific industrial needs.
-
Manufacturing: Produced through methods such as seamless extrusion, welded processes (TIG or laser welding), or even as formed tubes (e.g., coiled tubes). The manufacturing method influences the tube's suitability for different environments and applications.
Detailed Infomation of Titanium Welded Tubes:
Titanium welded tubes and pipes manufactured according to ASME SB338 and SB862 standards are renowned for their high quality and reliability in critical applications. The tubes are available in a comprehensive range of sizes and grades, offering exceptional corrosion resistance, strength, and lightweight characteristics inherent to titanium alloys.
These products are crucial in industries such as aerospace, marine, chemical processing, and medical, where performance under extreme conditions and long-term reliability are paramount. The adherence to stringent manufacturing standards ensures that each tube meets or exceeds industry requirements, providing assurance to customers in terms of quality and performance.
The random length supply format allows for versatile use in diverse projects, accommodating different installation and fabrication needs without compromising structural integrity or performance. This makes titanium welded tubes and pipes a preferred choice for applications demanding durability, corrosion resistance, and operational efficiency in challenging environments.
Processing Standard: Conforms to ASME SB338 (Titanium and Titanium Alloy Seamless and Welded Tubes for Condensers and Heat Exchangers) and ASME SB862 (Titanium and Titanium Alloy Welded Pipe).
Grade: Available in various grades including GR1, GR2, GR7, and GR12. Each grade offers different properties suited to specific applications, from general industrial uses to more specialized requirements such as aerospace or medical.
Size:
- Outer Diameter (OD): Ranges from 0.315 inches (8 mm) to 48 inches (1219 mm). This wide range accommodates different industrial and structural needs, from small-scale applications to large-scale industrial processes.
- Wall Thickness (WT): Varies between 0.0197 inches (0.5 mm) to 0.5 inches (12.7 mm). The variability in wall thickness allows for customization based on the pressure and environmental conditions the tubes will endure.
- Length: Supplied in random lengths, ensuring flexibility in usage and reducing material waste during installation and fabrication.
Chemical Compostition:
| Chemical Requirements - ASTM B862 - 19 |
| Element |
Composition, %, range or max |
| |
Grade 1 |
Grade 2 |
Grade 2H |
Grade 3 |
Grade 5 |
Grade 7 |
Grade 7H |
Grade 9 |
Grade 11 |
Grade 12 |
Grade 13 |
| Carbon |
0.08 |
0.08 |
0.08 |
0.08 |
0.08 |
0.08 |
0.08 |
0.08 |
0.08 |
0.08 |
0.08 |
| Oxygen |
0.18 |
0.25 |
0.25 |
0.35 |
0.20 |
0.25 |
0.25 |
0.15 |
0.18 |
0.25 |
0.10 |
| Nitrogen |
0.03 |
0.03 |
0.03 |
0.05 |
0.05 |
0.03 |
0.03 |
0.03 |
0.03 |
0.03 |
0.03 |
| Hydrogen |
0.015 |
0.015 |
0.015 |
0.015 |
0.015 |
0.015 |
0.015 |
0.015 |
0.015 |
0.015 |
0.015 |
| Iron |
0.20 |
0.30 |
0.30 |
0.30 |
0.40 |
0.30 |
0.30 |
0.25 |
0.20 |
0.30 |
0.20 |
| Aluminum |
-- |
-- |
-- |
-- |
5.5-6.75 |
-- |
-- |
2.5-3.5 |
-- |
-- |
-- |
| Vanadium |
-- |
-- |
-- |
-- |
3.5-4.5 |
-- |
-- |
2.0-3.0 |
-- |
-- |
-- |
| Palladium |
-- |
-- |
-- |
-- |
-- |
0.12-0.25 |
0.12-0.25 |
-- |
0.12-0.25 |
-- |
-- |
| Ruthenium |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0.04-0.06 |
| Nickel |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0.6-0.9 |
0.4-0.6 |
| Molybdenum |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
0.2-0.4 |
-- |
| Chromium |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
| Cobalt |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
| Zirconium |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
| Niobium |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
| Tin |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
| Silicon |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
-- |
| Other Elements, each |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
0.1 |
| Other Elements, total |
0.4 |
0.4 |
0.4 |
0.4 |
0.4 |
0.4 |
0.4 |
0.4 |
0.4 |
0.4 |
0.4 |
| Titanium |
balance |
balance |
balance |
balance |
balance |
balance |
balance |
balance |
balance |
balance |
balance |
Quality Test of Titanium Tube:
Quality tests for titanium and titanium alloy tubes are crucial to ensure they meet international standards and specific customer requirements.
Dimensional Inspection: Verify that the tubes meet specified dimensions, including outer diameter (OD), wall thickness, and length, as per standards like ASME SB338, ASTM B338, or ASTM B337.
Visual Inspection: Surface examination to detect any defects such as scratches, pits, cracks, or other surface irregularities that could affect performance or integrity.
Chemical Composition Analysis: Ensure the titanium alloy composition complies with the specified requirements in terms of elements such as titanium, aluminum, vanadium, and others, as per ASTM or ASME standards.
Mechanical Testing:
- Tensile Testing: Determine the tensile strength, yield strength, and elongation of the material to ensure it meets mechanical property requirements.
- Hardness Testing: Measure the hardness of the tube material, which can indicate its strength and resistance to deformation.
Non-Destructive Testing (NDT):
- Ultrasonic Testing (UT): Detect internal defects such as voids, inclusions, or discontinuities using ultrasonic waves.
- Radiographic Testing (RT): Utilize X-rays or gamma rays to inspect welds and detect internal defects in the tube material.
- Eddy Current Testing (ECT): Detect surface and near-surface defects, cracks, or discontinuities in conductive materials like titanium tubes.
Hydrostatic Testing: Subject the tubes to internal pressure to ensure they can withstand specified pressures without leaking or rupturing.
Corrosion Testing: Assess the material's resistance to corrosion in different environments, ensuring it meets required standards for long-term durability.
Microstructure Examination: Evaluate the microstructural characteristics of the tube material to ensure it meets specified grain size and structure requirements.
Surface Finish Inspection: Measure and inspect the surface finish of the tubes to ensure it meets specified smoothness or roughness criteria.
Documentation and Certification: Provide comprehensive documentation of test results, material certifications, and compliance with international standards. Third-party inspections from recognized agencies such as TUEV, SGS, Lloyd's Register (LR), Moody, Intertek (ITS), or DNV may also be conducted to validate quality and compliance.
Applications of Titanium Tube:
Titanium tubes find diverse applications across several industries due to their exceptional properties, including high strength-to-weight ratio, corrosion resistance, and biocompatibility. Here are some key applications:
Aerospace: Titanium tubes are widely used in the aerospace industry for applications such as aircraft hydraulic systems, airframes, landing gear components, and exhaust ducts. Their lightweight nature helps reduce overall aircraft weight, enhancing fuel efficiency and performance.
Industrial: In industrial settings, titanium tubes are utilized in heat exchangers, condensers, and reactor vessels where resistance to corrosion from aggressive chemicals and high temperatures is crucial. They are also employed in desalination plants for their resistance to seawater corrosion.
Medical: Titanium tubes are essential in medical applications, particularly for manufacturing implants and surgical instruments. Titanium's biocompatibility and resistance to bodily fluids make it ideal for implants such as hip stems, bone plates, and dental implants.
Marine: Titanium tubes are used in marine environments for seawater-cooled condensers, heat exchangers, and piping systems. Their corrosion resistance ensures longevity and reliability in saltwater environments.
Automotive: Titanium tubes are employed in automotive applications, especially in high-performance vehicles, for components like exhaust systems and intake piping. Their high strength and heat resistance contribute to improved engine performance.
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