Daxun Alloy's pure titanium Grade 1 titanium tubes include:
seamless titanium tubes and welded titanium tubes, which boast unparalleled ductility and cold formability, making them perfect for deep drawing applications. Grade 1 titanium tubes stand out for their exceptional general and seawater corrosion resistance, and their outstanding ability to resist oxidizing, neutral, and slightly reducing media (solutions), including chlorides.
Titanium's low density, approximately half that of nickel-based alloys, combined with its high strength, lightweight, and superior corrosion resistance, makes it an ideal choice for a variety of demanding chemical conditions. Compliance 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)
Renowned as the most widely used titanium tube for industrial applications, Grade 2 offers a remarkable blend of moderate strength and excellent ductility. It excels in highly oxidizing and slightly reducing environments (including chlorides) and provides top-tier corrosion protection in chemical and offshore industries, as well as in aircraft manufacturing, where both strength and formability are essential. It is also utilized in heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and piping.
Fabrication
Titanium Grade 2 adapts well to cold forming using conventional techniques. It can be easily machined, but it is crucial to maintain sharp tools and use ample coolant. Similar to machining austenitic stainless steels, cuts must be deep and continuous with slow feeds and speeds.
Stock Availability
Daxun Alloys maintains a robust inventory of CP 2 Grade Titanium Seamless and Welded Pipes in a diverse range of sizes.
Weight Reduction
CP 2 grade titanium tubes are characterized by their low density and high strength-to-weight ratio, making them perfect for applications requiring weight reduction without compromising strength. They are cold formable, exhibit excellent ductility, and can be welded using standard TIG and MIG processes, although inert gas shielding is necessary to prevent embrittlement in the weld zone.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tube possesses an alpha (hexagonal close-packed) crystal structure, akin 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 the impurities or alloying additions present. Alloying elements can also divide the single equilibrium transformation temperature into two 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 phases 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. Throughout manufacturing, titanium seamless tubes maintain continuous perimeters. The comprehensive process includes: vacuum arc melting of sponge titanium, ingot blanking to create hollow blanks, cleaning, cutting, feeding, hot extrusion or oblique rolling + piercing, degreasing, drying, cutting, online annealing and straightening, pickling, multiple cold rolling stages, 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 expertly crafted from annealed flat-rolled steel plate or steel strip using the advanced automatic arc welding (TIG) process. Our meticulous production processes include: 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. At Daxun, we ensure no filler materials are used during the welding process, guaranteeing superior quality.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium Tube
Titanium Alloy - (UNS R56400)
Introduction
Introducing the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400) - the most widely acclaimed titanium alloy. This duplex alpha+beta titanium alloy incorporates aluminum as the alpha stabilizer and vanadium as the beta stabilizer. Renowned for its high strength, this alloy performs excellently at low temperatures around 800°F (427°C). The ATI Ti-6Al-4V, Grade 5 alloy is ideal for annealing, solution treating, and aging. Its robust 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, offering an unmatched strength-to-weight ratio.
The alloy is initially melted using advanced techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Subsequent remelting is performed through one or two vacuum arc steps to ensure purity and consistency.
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
Annealed at 1,700-1,900°F (927 - 1,038°C) for maximum hardness, tensile strength, and fatigue resistance.
The DAXUN 6-4 Grade 5 Titanium Tube offers versatile heat treatment options to suit 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
Achieve optimal properties with small cross sections and rapid quenching in the solution treated and aged condition. Be aware that larger cross-section sizes or delayed quenching may result in less than optimal properties.
Hardness
In the annealed condition, the typical hardness ranges from 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, showcases superior forging characteristics. Forged at an optimal temperature of 1,750°F (954°C) and a final forging temperature of 1,450°F (788°C), it is recommended to implement a reduction of at least 35% to ensure the highest quality results.
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, is known for its difficulty in forming at room temperature, even when annealed. However, it excels in severe forming operations, such as bending or stretching, at elevated temperatures up to 1,200°F (649°C) without altering its mechanical properties. For hot sizing or forming, creep forming processes are highly effective at temperatures ranging from 1,000 to 1,200°F (538 to 649°C).
Machinability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, can be precisely machined using techniques applicable to austenitic stainless steels. Ensure slow speeds, high feeds, robust tool rigidity, and abundant use of non-chlorinated cutting fluids for optimal machining results.
Weldability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, exhibits excellent weldability in both annealed and solution plus partially aged conditions. Effective aging processes are performed during post-weld heat treatments.
To maintain high quality, precautions must be taken to prevent contamination with oxygen, nitrogen, and hydrogen during welding. Fusion welding is best conducted in an inert gas-filled environment or with inert gas tail shields to protect the molten metal and adjacent hot zones. Spot, seam, and flash welding can be successfully performed without the need for a protective atmosphere.
Special Considerations
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, requires careful handling to prevent contamination from hydrogen during improper pickling and from oxygen, nitrogen, and carbon absorption during forging, heat treating, and brazing. Such contamination can adversely affect ductility, notch sensitivity, and formability.
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