Daxun Alloy's Pure Titanium Grade 1 Tubes Include:
Our seamless and welded titanium tubes boast exceptional ductility and cold formability, making them perfect for deep drawing applications. Grade 1 titanium tubes are renowned for their impressive general and seawater corrosion resistance. They also offer outstanding resistance to oxidizing, neutral, and slightly reducing media (solutions), including chlorides.
Titanium is known for its low density, approximately half that of nickel-based alloys, high strength, lightweight, and excellent corrosion resistance, making it an ideal choice for demanding chemical environments. Adhering to standards like ASTM B338, ASTM B265, ASME SB265, ASTM F67, ISO 5832-2, 3.7025, and UNS R50250, our tubes are engineered to meet the highest quality and performance benchmarks.
Grade 2 Titanium Tube (UNS R50400 / Werkstoff WS 3.7034)
Grade 2 titanium tubes are the go-to solution for industrial applications, offering a perfect balance of moderate strength and reasonable ductility. They provide excellent corrosion resistance in both highly oxidizing and slightly reducing environments (including chlorides). Widely used in the chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and pipes, they deliver both strength and formability.
Fabrication
Titanium Grade 2 is highly responsive to standard cold forming methods and can be readily machined. However, it is crucial to maintain sharp tools and use liberal amounts of coolant during the process. Similar to machining austenitic stainless steels, cuts should be deep and continuous, with slow feeds and speeds for optimal results.
Stock Availability
Daxun Alloys maintains a robust inventory of CP 2 Grade Titanium Seamless and Welded Pipes in a variety of sizes, ready to meet diverse application needs.
Weight Reduction
CP 2 grade titanium tubes are characterized by their low density and high strength-to-weight ratio, making them ideal for applications requiring weight reduction without compromising strength. These tubes are cold formable, have excellent ductility, and can be welded using conventional TIG and MIG processes. However, inert gas shielding is essential to prevent embrittlement in the weld zone.
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. This structure transforms into a beta (body-centered cubic) structure at approximately 885°C (1625°F). The transformation temperature can vary depending on the type and amount of impurities or alloying additions. Alloy additions divide the single temperature of the equilibrium transformation into two 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 two 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 start with hollow blanks produced through hot extrusion or oblique rolling and piercing processes, followed by multiple cold rolling stages. These tubes maintain continuous perimeters throughout the manufacturing process. The production of seamless tubes involves several steps: sponge titanium vacuum arc melting, ingot blanking for 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 plate or steel strip using an advanced automatic arc welding (TIG) process. The comprehensive production sequence includes several key stages: titanium plate uncoiling, shearing, butt welding, cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing, annealing, precision reducing and sizing, straightening, secondary eddy current testing, caliper marking, cutting, ultrasonic testing, hydrostatic testing, final inspection, and packaging. Each welded pipe undergoes a mandatory stress-relief heat treatment post-forming and welding to ensure structural integrity. Daxun ensures no filler materials are utilized during the welding process, maintaining the highest quality standards.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium Tube
Titanium Alloy - (UNS R56400)
Introduction
The DAXUN Ti-6Al-4V Titanium Tube, also known as Grade 5 (UNS R56400), stands as the most favored titanium alloy, renowned for its duplex alpha+beta composition. Aluminum acts as the alpha stabilizer while vanadium serves as the beta stabilizer. This exceptional high-strength alloy maintains performance at low temperatures up to 800°F (427°C). The ATI Ti-6Al-4V, Grade 5 alloy is ideal for processes such as annealing, solution treating, and aging. Its applications are diverse, including compressor blades, disks, and rings for jet engines, fuselage and space capsule components, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and critical forgings, all benefiting from its superior strength-to-weight ratio.
The alloy synthesis begins with initial melting through vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Subsequent remelting occurs in one or two vacuum arc steps to ensure utmost purity and consistency.
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°); 999°C (± 14°)
Heat Treatment
Annealing at 1,700-1,900°F (927 - 1,038°C) is prescribed for attaining high hardness, tensile strength, and fatigue strength.
DAXUN 6-4 Grade 5 Titanium Tube offers versatility in heat treatment methods to suit various needs.
1. Annealing: 1,275 -1,400°F (691 - 760°C), ½ to 2 hours, followed by air or furnace cooling
2. Stress Relief Annealing: 1,000 -1,200°F (538 - 649°C), 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 with a water quench
4. Aging: 975 -1,025°F (524 - 552°C), for 4 to 8 hours, followed by air cooling
Optimum Properties
Optimal properties are achieved with small cross-sections and rapid quenching in the solution treated and aged condition. Larger cross-sections or delayed quenching may result in properties that are less than optimal.
Hardness
Typical hardness ranges from Rockwell C 30-34 in the annealed condition to approximately Rockwell C 35-39 when solution treated and aged.
Forgeability/Formability
Introducing the exceptional DAXUN Ti-6Al-4V Titanium Tube, Grade 5! This titanium marvel is meticulously forged at a high temperature of 1,750°F (954°C), with a final forging process at 1,450°F (788°C). For optimal performance and unparalleled results, a reduction of at least 35% is highly recommended during forging.
Experience the engineering excellence of the DAXUN Ti-6Al-4V Titanium Tube, Grade 5. While forming at room temperature can be challenging, even after annealing, this titanium tube demonstrates remarkable adaptability for severe forming operations. These include bending and stretching, which can be executed on the annealed material at temperatures as high as 1,200°F (649°C) without compromising its mechanical integrity. Additionally, creep forming is an excellent technique for hot sizing or forming between 1,000 to 1,200°F (538 to 649°C), ensuring precision and durability.
Machinability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is expertly machinable using methods designed for austenitic stainless steels. Employ slow speeds and high feeds, ensuring excellent tool rigidity, and utilize copious amounts of non-chlorinated cutting fluids. This approach guarantees precise machining and exceptional results.
Weldability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 is highly weldable in both annealed and solution-aged conditions. Aging occurs during post-weld heat treatment, offering versatility and strength in your projects.
For optimal weld quality, it is crucial to avoid contamination with oxygen, nitrogen, and hydrogen. Fusion welding can be efficiently performed in an inert gas-filled chamber or by using an inert gas tail shield over the molten metal and adjacent hot zones. Additionally, spot welding, seam welding, and flash welding can be executed without a protective atmosphere, ensuring adaptability and precision in various welding applications.
Special Considerations
When working with DAXUN Ti-6Al-4V Titanium Tube, Grade 5, be mindful of potential contamination risks. Hydrogen contamination can arise from improper pickling, while oxygen, nitrogen, and carbon absorption may occur during forging, heat treating, or brazing. Such contamination can negatively impact ductility, notch sensitivity, and formability. Hence, meticulous handling and processing are essential for preserving the integrity and superior properties of this titanium tube.
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