Daxun Alloy's Pure Titanium Grade 1 Tubes Include:
Seamless and welded titanium tubes showcasing unparalleled ductility and cold formability, perfect for deep drawing applications. Grade 1 titanium tubes are renowned for their superior resistance to general and seawater corrosion, as well as their exceptional defense against oxidizing, neutral, and slightly reducing media (solutions) including chlorides.
The low density of titanium, approximately half that of nickel-based alloys, combined with its high strength, light weight, and outstanding corrosion resistance, makes it indispensable for various challenging chemical environments. Adhering to the highest standards: 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)
Primarily utilized in industrial applications, this titanium tube offers an exceptional balance of moderate strength and ductility. It delivers excellent corrosion resistance in highly oxidizing and slightly reducing conditions, including chlorides. Essential for the chemical and offshore sectors, aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, and various industrial and aerospace components.
Fabrication
Titanium Grade 2 is highly receptive to cold forming with standard techniques. While it is easily machinable, maintaining sharp tools and using abundant coolant is crucial. Similar to machining austenitic stainless steels, deep and continuous cuts with slow feed rates and speeds are recommended.
Stock Availability
Daxun Alloys maintains an extensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in various dimensions.
Weight Reduction
CP 2 grade titanium tubes boast a low density and an impressive strength-to-weight ratio, making them ideal for applications necessitating weight reduction without compromising strength. They exhibit excellent cold formability, ductility, and can be welded using TIG and MIG processes with inert gas shielding to prevent weld zone embrittlement.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tube features an alpha (hexagonal close-packed) crystal structure, similar to commercially pure titanium grades 1 and 3. At approximately 885°C [1625°F], it transitions to a beta (body-centered cubic) structure. This transformation temperature can vary based on impurities or alloying additions, which also create distinct temperature zones: the alpha transformation zone (below which the alloy is entirely alpha) and the beta transformation zone (above which the alloy is entirely beta). Between these temperatures, both alpha and beta forms coexist. For Grade 2 titanium, the 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 fabricated from hollow blanks via hot extrusion or an oblique rolling and piercing process, followed by multiple cold rolling stages. Throughout the manufacturing process, titanium seamless tubes retain continuous perimeters. The production sequence includes: 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 crafted from annealed flat-rolled steel plate or steel strip utilizing an advanced automatic arc welding (TIG) process. Our production pipeline 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-formation and welding. Daxun ensures no filler materials are used during the welding process, maintaining the highest standards of purity and strength.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium Tube
Titanium Alloy - (UNS R56400)
Introduction
Presenting DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400), the most sought-after titanium alloy. This duplex alpha+beta titanium alloy incorporates aluminum as the alpha stabilizer and vanadium as the beta stabilizer. Renowned for its exceptional strength, this alloy performs admirably in temperatures as low as 800°F (427°C). ATI Ti-6Al-4V, Grade 5 alloy finds versatile applications, including annealing, solution treating, and aging processes. Ideal for compressor blades, disks, and rings in jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and critical forgings demanding a high strength-to-weight ratio.
The alloy's initial melting is conducted through methods such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM), followed by one or two vacuum arc remelting steps.
Specifications
• ASTE 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
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.
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
Peak properties are achieved in small cross sections with rapid quenching in the solution treated and aged condition. Larger cross-section sizes and delayed quenching may lead to suboptimal properties.
Hardness
Typical hardness in the annealed condition ranges from Rockwell C 30-34, and in the solution and aged condition from Rockwell C 35-39.
Forgeability/Formability
Experience unparalleled strength and resilience with the DAXUN Ti-6Al-4V Titanium Tube, Grade 5. This high-performance tube undergoes precise forging at 1,750°F (954°C) and concludes at a final forging temperature of 1,450°F (788°C). For optimal results, a reduction of at least 35% is recommended, ensuring exceptional durability and reliability.
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, presents challenges in forming at room temperature, even when annealed. However, severe forming operations such as bending or stretching can be efficiently executed on the annealed material at elevated temperatures up to 1,200°F (649°C) without altering its mechanical properties. Creep forming is adept for hot sizing or forming within a temperature range of 1,000 to 1,200°F (538 to 649°C), maintaining the tube's integrity and performance.
Machinability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, can be precision-machined using techniques developed for austenitic stainless steels. Employ slow speeds and high feeds alongside robust tool rigidity, complemented by the generous application of non-chlorinated cutting fluids for impeccable results.
Weldability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, excels in weldability whether in annealed, solution-treated, or partially aged conditions. Post-weld heat treatment completes the aging process, ensuring robust welds.
To maintain the exceptional properties of the DAXUN Ti-6Al-4V Titanium Tube, special precautions are necessary to prevent contamination from oxygen, nitrogen, and hydrogen. Fusion welding should be conducted in an inert gas-filled chamber or with an inert gas tail shield protecting the molten metal and adjacent hot zones. Spot welding, seam welding, and flash welding are all feasible without a protective atmosphere, safeguarding the tube's integrity.
Special Considerations
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, demands careful handling to prevent contamination by hydrogen, oxygen, nitrogen, and carbon, which can occur during pickling, forging, heat treating, or brazing. Such contamination can diminish ductility and impair notch sensitivity and formability. Diligent measures are required to maintain the tube's superb quality and performance.
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