Daxun Alloy's premium pure titanium Grade 1 tubes are meticulously crafted to ensure top-notch quality. Our offerings include:
Seamless titanium tubes and welded titanium tubes, both remarkable for their superb ductility and cold formability, make them ideal for deep drawing applications. Grade 1 titanium tubes are renowned for their exceptional resistance to general and seawater corrosion, as well as resistance to oxidizing, neutral, and slightly reducing media (solutions), including chlorides.
Titanium's impressive attributes, such as low density (approximately half that of nickel-based alloys), high strength, lightweight nature, and formidable corrosion resistance, make it an outstanding choice for challenging chemical environments. Our tubes adhere to stringent execution standards like ASTM B338, ASTM B265, ASME SB265, ASTM F67, ISO 5832-2, 3.7025, and UNS R50250.
Grade 2 Titanium Tube (UNS R50400 / Werkstoff WS 3.7034)
Widely regarded as the most versatile titanium tube for industrial use, Grade 2 titanium offers a perfect blend of moderate strength and reasonable ductility. It boasts excellent corrosion resistance in both highly oxidizing and slightly reducing environments, including chlorides. This grade is extensively utilized in the chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, and various industrial and aerospace components, CPI equipment, and pipes.
Fabrication
Titanium Grade 2 is highly amenable to cold forming using standard methods. While it can be readily machined, it's crucial to maintain sharp tools and use ample coolant. Similar to machining austenitic stainless steels, machining should involve deep, continuous cuts with slow feeds and speeds.
Stock Availability
Daxun Alloys proudly stocks an extensive range of CP Grade 2 Titanium Seamless and Welded Pipes in various sizes to meet diverse requirements.
Weight Reduction
CP Grade 2 titanium tubes are distinguished by their low density and exceptional strength-to-weight ratio, making them ideal for applications where weight reduction is essential without compromising overall strength. These tubes are cold formable, exhibit excellent ductility, and can be welded using conventional TIG and MIG processes, though inert gas shielding is necessary to prevent weld zone embrittlement.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tubes exhibit an alpha (hexagonal close-packed) crystal structure, similar to commercially pure titanium grades 1 and 3. Around 885°C (1625°F), this structure transitions to a beta (body-centered cubic) phase. The transformation temperature can vary based on impurities or alloying additions. Alloying elements also introduce two temperature zones: the alpha transformation zone (below which the alloy is all alpha) and the beta transformation zone (above which the alloy is all beta). Between these temperatures, both alpha and beta forms coexist. For Grade 2 titanium, typical alpha and beta transformation temperatures are 890°C (1635°F) and 913°C (1675°F), respectively.
Grade 2 Titanium Seamless Pipe Manufacturing Process
Daxun's ASTM B338 Grade 2 titanium seamless tubes are expertly produced from hollow blanks through hot extrusion or oblique rolling and piercing processes, followed by multiple stages of cold rolling. Throughout manufacturing, titanium seamless tubes maintain continuous perimeters. The comprehensive production process includes: sponge titanium vacuum arc melting, ingot blanking to obtain hollow blanks, cleaning, cutting, feeding, hot extrusion or oblique rolling and piercing, degreasing, drying, cutting, online annealing and straightening, pickling, multiple cold rolling, degreasing, drying, vacuum annealing, straightening, cutting, pickling, final inspection, marking (DAXUN), and packaging.
Grade 2 Titanium Welded Pipe Manufacturing Process
Daxun's ASTM B338 Grade 2 titanium welded pipe boasts superior quality, crafted from annealed flat-rolled steel plate or steel strip using the state-of-the-art automatic arc welding (TIG) process. Our meticulous production process encompasses: titanium plate uncoiling, shearing, butt welding, cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing, annealing, precision reducing and sizing, straightening, eddy current testing, caliper marking, cutting, ultrasonic testing, hydrostatic testing, final inspection, and packaging. To ensure optimal performance, welded pipes undergo at least one stress relief heat treatment post-forming and welding. Notably, Daxun employs filler materials during the welding process to achieve unmatched precision and reliability.
Ti-6Al-4V Titanium Pipe - Premium Grade 5 Titanium Tube
Titanium Alloy - (UNS R56400)
Introduction
DAXUN's Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400), stands as the industry's most sought-after titanium alloy. This dual-phase alpha+beta titanium alloy leverages aluminum as the alpha stabilizer and vanadium as the beta stabilizer, ensuring exceptional strength. Remarkably, this high-strength alloy performs effectively at temperatures as low as 800°F (427°C). ATI Ti-6Al-4V, Grade 5 alloy undergoes processes like annealing, solution treating, and aging, making it suitable for critical applications such as compressor blades, disks, and rings for jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and high-strength-to-weight ratio forgings.
The alloy begins its journey with advanced melting techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Subsequent remelting involves one or two vacuum arc steps to ensure purity and uniformity.
Specifications
• ASTM B338 - Standard for Heat Treatable Titanium Tube
• AMS 4928 - Standards for Forgings and Forging Stock (Annealed)
• AMS 4965 - Standards for Forgings (Solution Treated and Aged)
• AMS 4967 - Standards for Forgings (Annealed, Heat Treatable)
Physical Properties
Ti-6Al-4V Titanium Tube Melting Range: 2,800-3,000°F (1,538 - 1,649°C)
Density: 0.160 lb/in³; 4.47 g/cm³
Beta Transus Temperature: 1830°F (± 25°F); 999°C (± 14°C)
Heat Treatment
Annealed at 1,700-1,900°F (927 - 1,038°C) to achieve high hardness, tensile strength, and fatigue strength.
DAXUN 6-4 Grade 5 Titanium Tube offers versatile heat treatment options to meet diverse requirements.
1. Annealing: 1,275 - 1,400°F (691 - 760°C), for ½ to 2 hours, followed by air or furnace cooling.
2. Stress Relief Annealing: 1,000 - 1,200°F (538 - 649°C), for 1 to 8 hours, followed by air or furnace cooling.
3. Solution Heat Treating: 1,675 - 1,750°F (913 - 954°C), for 1 hour, followed by water quenching.
4. Aging: 975 - 1,025°F (524 - 552°C), for 4 to 8 hours, followed by air cooling.
Optimum Properties
Small cross sections with rapid quenching achieve the best properties in the solution treated and aged condition. Larger cross-section sizes or delayed quenching may result in suboptimal properties.
Hardness
Typical hardness in the annealed condition is Rockwell C 30-34. In the solution and aged condition, it reaches approximately Rockwell C 35-39.
Forgeability/Formability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube embarks on its forging journey at a remarkable 1,750°F (954°C) and completes its final forging at 1,450°F (788°C). To achieve optimal results, a reduction of at least 35% is highly recommended, ensuring superior quality and performance.
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube showcases its resilience and strength, proving difficult to form at room temperature, even when annealed. For severe forming operations such as bending or stretching, the annealed material can be worked at elevated temperatures up to 1,200°F (649°C) without compromising its mechanical properties. Creep forming is ideal for hot sizing or forming within the range of 1,000 to 1,200°F (538 to 649°C).
Machinability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is adaptable to machining methods used for austenitic stainless steels, requiring slow speeds, high feeds, excellent tool rigidity, and the application of generous amounts of non-chlorinated cutting fluids for precision and efficiency.
Weldability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube offers exceptional weldability in both annealed and solution- and partially-aged conditions. The post-weld heat treatment allows for perfect aging.
During welding, it is crucial to prevent contamination with oxygen, nitrogen, and hydrogen. Fusion welding can be expertly performed in an inert gas-filled chamber or by using an inert gas tail shield over the molten metal and adjacent hot zones. Spot welding, seam welding, and flash welding can be proficiently executed without a protective atmosphere.
Special Considerations
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube requires careful handling to avoid contamination from hydrogen during improper pickling and from the absorption of oxygen, nitrogen, and carbon during forging, heat treating, and brazing. Such contamination can reduce ductility, impair notch sensitivity, and affect formability.
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