Daxun Alloy's Pure Titanium Grade 1 Tubes Include:
Seamless and welded titanium tubes, renowned for their exceptional ductility and cold formability, ideal for deep drawing. Grade 1 titanium tubes offer excellent general and seawater corrosion resistance, and outstanding resistance to oxidizing, neutral, and slightly reducing media (solutions), including chlorides.
Titanium, with its low density (approximately half that of nickel-based alloys), high strength, lightweight, and corrosion resistance, is perfect for harsh chemical environments. Standards include: 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 most widely used titanium tube for industrial applications, offering a superb balance of moderate strength and ductility. Known for excellent corrosion resistance in both highly oxidizing and slightly reducing conditions (including chlorides). It is widely employed in chemical and offshore industries, aircraft manufacture, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and pipes where strength and formability are essential.
Fabrication
Titanium Grade 2 is highly responsive to cold forming using standard methods. It can be easily machined, but requires sharp tools and liberal use of coolant. As with machining austenitic stainless steels, cuts should be deep and continuous with slow feeds and speeds.
Stock Availability
Daxun Alloys maintains stock of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes.
Weight Reduction
CP 2 grade titanium tubes, with their low density and high strength-to-weight ratio, are perfect for applications requiring weight reduction without compromising strength. They're cold formable, exhibit good ductility, and can be welded using conventional TIG and MIG processes, with inert gas shielding to prevent embrittlement of the weld zone.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tube exhibits an alpha (hexagonal close-packed) crystal structure, similar to commercially pure titanium grades 1 and 3. At approximately 885°C [1625°F], it transforms to a beta (body-centered cubic) structure. This transformation temperature can vary with the type and amount of impurities or alloying additions. Alloying elements further divide the single equilibrium transformation temperature into 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. Typical alpha and beta transformation temperatures for Grade 2 titanium 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 crafted from hollow blanks using hot extrusion or oblique rolling and piercing processes, followed by multiple cold rolling stages. The production process ensures continuous perimeters at all stages. Key steps include: sponge titanium vacuum arc melting, ingot blanking to obtain hollow blanks, cleaning, cutting and 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 is meticulously crafted from annealed flat-rolled steel plates or strips through an advanced automatic arc welding (TIG) process. The production journey encapsulates: 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. Post-formation and welding, each pipe undergoes at least one stress relief heat treatment. Noteworthy, Daxun ensures that no filler materials are utilized during the welding procedure, guaranteeing unparalleled quality and integrity.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium Tube
Titanium Alloy - (UNS R56400)
Introduction
DAXUN's Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400), stands as the quintessential titanium alloy, revered for its duplex alpha+beta composition. Aluminum serves as the alpha stabilizer, while vanadium fortifies its beta stability. This high-strength marvel remains resilient at low temperatures of approximately 800°F (427°C). The remarkable ATI Ti-6Al-4V, Grade 5 alloy, boasts versatility in annealing, solution treating, and aging processes. Its applications span across critical components such as jet engine compressor blades, disks, and rings; fuselage and space capsule elements; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and pivotal forgings, all demanding an exceptional strength-to-weight ratio.
The alloy's initial melting phase employs state-of-the-art vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM) techniques. Further refinement is achieved through one or two vacuum arc remelting processes, ensuring superior purity and performance.
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 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°); 999°C (± 14°)
Heat Treatment
Annealing at 1,700-1,900°F (927 - 1,038°C) is essential when high hardness, tensile strength, and fatigue strength are imperative.
DAXUN's 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), ½ to 2 hours, air or furnace cool
2. Stress Relief Annealing: 1,000 -1,200°F; (538 - 649°C), 1 to 8 hours, air or furnace cool
3. Solution Heat Treating: 1,675 -1,750°F; (913 - 954°C), 1 hour, water quench
4. Aging: 975 -1,025°F; (524 - 552°C), 4 to 8 hours - air cool
Optimum Properties
Optimal properties are achieved in small cross-sections treated with rapid quenching. In contrast, larger sections and/or delayed quenching may yield properties below the optimum.
Hardness
Typical hardness in the annealed state ranges from Rockwell C 30-34, while in the solution treated and aged condition, it elevates to approximately Rockwell C 35-39.
Forgeability/Formability
Discover the unparalleled excellence of the DAXUN Ti-6Al-4V Titanium Tube, Grade 5. Expertly forged at 1,750°F (954°C) with a precision final forging temperature of 1,450°F (788°C), this premium tube achieves optimal results with a recommended reduction of at least 35%.
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, presents notable challenges in forming at room temperature, even post-annealing. However, advanced forming operations such as bending or stretching can be successfully executed on annealed material at temperatures up to 1,200°F (649°C) without compromising mechanical integrity. Hot sizing or forming via creep forming is also feasible at temperatures between 1,000 to 1,200°F (538 to 649°C).
Machinability
Machining the DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is akin to working with austenitic stainless steels. Utilize slow speeds, high feeds, robust tool rigidity, and copious amounts of non-chlorinated cutting fluids for the best results.
Weldability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, excels in weldability, whether in annealed or solution and partially aged conditions. Aging is achieved during post-weld heat treatment, ensuring structural integrity.
To prevent contamination during the welding process, steps must be taken to exclude oxygen, nitrogen, and hydrogen. Fusion welding is best performed within an inert gas chamber or with an inert gas tail shield. Additionally, spot, seam, and flash welding can be conducted without a protective atmosphere.
Special Considerations
Attention must be given to avoid contaminating the DAXUN Ti-6Al-4V Titanium Tube, Grade 5, with hydrogen during pickling, and with oxygen, nitrogen, and carbon during forging, heat treating, and brazing. Such contamination can detrimentally affect ductility, notch sensitivity, and formability.
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