Daxun Alloy's pure titanium Grade 1 titanium tubes include:
Our offerings span seamless and welded titanium tubes, celebrated for their remarkable ductility and cold formability, making them perfect for deep drawing applications. The Grade 1 titanium tubes boast superior resistance to general and seawater corrosion, and they excel against oxidizing, neutral, and slightly reducing media (solutions), including chlorides.
Titanium's impressive attributes-low density (approximately half that of nickel alloys), high strength, lightweight nature, and exceptional corrosion resistance-make it an outstanding choice for various rigorous chemical environments. Our adherence to standards is unmatched: ASTM B338 | ASTM B265 | ASME SB265 | ASTM F67 | ISO 5832-2 | 3.7025 | UNS R50250
Grade 2 Titanium Tube (UNS R50400 / Werkstoff WS 3.7034)
The Grade 2 Titanium Tube stands as the industrial sector's preferred choice, blending moderate strength with remarkable ductility. Its exceptional corrosion resistance thrives in both highly oxidizing and slightly reducing environments, including chlorides. This versatile tube is indispensable in chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial, aerospace components, CPI equipment, and pipe systems.
Fabrication
Titanium Grade 2 is highly amenable to cold forming through conventional methods. It is easily machinable, though it demands sharp tools and generous coolant application. Similar to machining austenitic stainless steels, operations should involve deep, continuous cuts at slow feed rates and speeds.
Stock Availability
Daxun Alloys maintains a robust inventory of CP 2 Grade Titanium Seamless and Welded Pipes in diverse sizes.
Weight Reduction
The CP 2 grade titanium tubes are characterized by low density and an impressive strength-to-weight ratio, ideal for applications necessitating weight reduction without compromising strength. They are easily cold formable, exhibit good ductility, and are compatible with conventional TIG and MIG welding processes, provided inert gas shielding is used to prevent weld zone embrittlement.
Crystal Structure
At ambient temperatures, ASTM B338 Grade 2 titanium tubes exhibit an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. Upon reaching approximately 885°C (1625°F), this structure converts to a beta (body-centered cubic) form. The transition temperature can vary based on impurities or alloying elements, which also demarcate the single equilibrium transformation temperature into two distinct zones: the alpha transformation zone (below which the alloy remains all alpha) and the beta transformation zone (above which the alloy is all beta). Between these temperatures, both alpha and beta forms coexist. Typical transformation temperatures for Grade 2 titanium are 890°C (1635°F) for alpha and 913°C (1675°F) for beta.
Grade 2 Titanium Seamless Pipe Manufacturing Process
Daxun's ASTM B338 Grade 2 titanium seamless tubes undergo production from hollow blanks through hot extrusion or oblique rolling and piercing processes, followed by multiple cold rolling sequences. The tubes maintain continuous perimeters throughout all manufacturing stages. The manufacturing process, from raw sponge titanium to the final product, includes: vacuum arc melting of ingot, blanking to obtain hollow blanks, cleaning, cutting, feeding, hot extrusion or oblique rolling plus 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 is exquisitely crafted from annealed flat-rolled steel plate or steel strip using the cutting-edge automatic arc welding (TIG) process. The meticulous production journey includes: 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. Each welded pipe undergoes at least one stress relief heat treatment post-forming and welding. Daxun ensures no filler materials are used during the welding process, guaranteeing top-notch quality and reliability.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium TubeTitanium Alloy - (UNS R56400)
Introduction
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400), stands as the pinnacle of titanium alloys. This duplex alpha+beta titanium alloy, stabilized by aluminum for alpha and vanadium for beta, is renowned for its exceptional strength, suitable for low temperatures around 800°F (427°C). The ATI Ti-6Al-4V, Grade 5 alloy is ideal for annealing, solution treatment, and aging. Its applications span across compressor blades, disks, and rings for jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and critical forgings, all requiring a high strength-to-weight ratio.
The alloy is initially melted using state-of-the-art vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). The remelting process involves one or two steps in a vacuum arc.
Specifications
• ASTM B338 - Standard Heat Treatable Titanium Tube
• AMS 4928 - Forgings and Forging Stock (Annealed)
• AMS 4965 - Forgings (Solution Treated and Aged)
• AMS 4967 - Forgings (Annealed, Heat Treatable)
Physical PropertiesTi-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°); 999°C (± 14°)
Heat Treatment When high hardness, tensile strength, and fatigue strength are required, the alloy is annealed at 1,700-1,900°F (927 - 1,038°C).
DAXUN 6-4 Grade 5 Titanium Tube offers versatile heat treatment options.
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 Optimum properties are achieved with small cross sections and rapid quenching in the solution treated and aged condition. Larger cross-sections or delayed quenching may yield sub-optimal properties.
HardnessIn the annealed condition, the typical hardness ranges from Rockwell C 30-34, whereas in the solution and aged condition, it ranges from approximately Rockwell C 35-39.
Forgeability/Formability Discover the superior quality of the DAXUN Ti-6Al-4V Titanium Tube, Grade 5. Expertly forged at a precise temperature of 1,750°F (954°C) with a final forging temperature of 1,450°F (788°C), this process ensures optimal strength and durability. For the best outcomes, a reduction of at least 35% is recommended.
Forming the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 at room temperature can be challenging, even when annealed. To achieve exceptional results, severe forming operations like bending or stretching should be conducted on annealed material at temperatures up to 1,200°F (649°C). This ensures the mechanical properties remain unchanged. Additionally, creep forming is ideal for hot sizing or shaping at temperatures between 1,000 and 1,200°F (538 to 649°C).
Machinability The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube offers excellent machinability. It can be efficiently processed using methods tailored for austenitic stainless steels. Employ slow speeds, high feeds, robust tool rigidity, and copious amounts of non-chlorinated cutting fluids to achieve precise machining.
Weldability The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube exhibits outstanding weldability. It can be seamlessly welded in both the annealed and solution or partially aged conditions, with further aging accomplished during post-weld heat treatment.
To ensure superior weld quality, it is crucial to prevent contamination with oxygen, nitrogen, and hydrogen. Fusion welding can be performed in an inert gas-filled chamber or with an inert gas tail shield protecting the molten metal and nearby hot zones. Moreover, spot welding, seam welding, and flash welding can be executed efficiently without a protective atmosphere.
Special Considerations The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube requires diligent handling to avoid contamination. Hydrogen contamination can arise from improper pickling, and absorption of oxygen, nitrogen, and carbon during forging, heat treating, brazing, etc., can occur. Such contamination may compromise ductility, notch sensitivity, and formability, so precision in processing is vital.
