Daxun Alloy's Premium Pure Titanium Grade 1 Tubes Include:
Our extensive range features both seamless and welded titanium tubes, renowned for their excellent ductility and cold formability, making them perfect for deep drawing applications. Grade 1 titanium tubes excel in general and seawater corrosion resistance and offer outstanding resistance to oxidizing, neutral, and slightly reducing media (solutions), including chlorides.
Titanium's low density (approximately half that of nickel-based alloys), coupled with its high strength, lightweight nature, and superior corrosion resistance, positions it as the material of choice for a myriad of challenging chemical environments. Our products adhere to the following 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)
The most frequently chosen titanium tube for industrial purposes, offering a remarkable balance of medium strength and commendable ductility. It demonstrates exceptional corrosion resistance in both highly oxidizing and slightly reducing conditions (including chlorides). Its versatility makes it invaluable in the chemical and offshore industries, aircraft manufacture, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, CPI equipment, and various industrial and aerospace components.
Fabrication
Titanium Grade 2 is highly amenable to cold forming using conventional methods. It is easily machinable, though it requires careful maintenance of sharp tools and ample coolant use. Similar to machining austenitic stainless steels, deep and continuous cuts with slow feeds and speeds yield the best results.
Stock Availability
Daxun Alloys carries a comprehensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in a range of sizes to meet diverse needs.
Weight Reduction
CP 2 grade titanium tubes boast a low density and an impressive strength-to-weight ratio, making them ideal for applications demanding weight reduction without compromising strength. These tubes are cold formable, exhibit excellent ductility, and can be welded using standard TIG and MIG techniques, though inert gas shielding is imperative to avoid 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. Around 885°C (1625°F), this structure transitions to a beta (body-centered cubic) form. The transformation temperature may vary based on impurity levels and alloying additions. These elements also segment the single transformation temperature into two zones: the alpha transformation zone (below which the alloy is fully alpha) and the beta transformation zone (above which the alloy is fully beta). Between these temperatures, both alpha and beta phases coexist. Typical transformation temperatures for Grade 2 titanium are 890°C (1635°F) and 913°C (1675°F) for alpha and beta, respectively.
Grade 2 Titanium Seamless Pipe Manufacturing Process
Daxun's superior ASTM B338 Grade 2 titanium seamless tubes are crafted from hollow blanks through a hot extrusion process or via oblique rolling and piercing, followed by multiple cold rolling procedures. Seamless tubes are designed to maintain continuous perimeters throughout the manufacturing stages. The meticulous production process 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 exemplifies superior craftsmanship, made from annealed flat-rolled steel plates or strips using the advanced automatic arc welding (TIG) process. Our meticulous production procedures 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. To ensure the utmost quality, every welded pipe undergoes at least one stress relief heat treatment post-forming and welding. Notably, Daxun adheres to the highest standards by incorporating filler materials during the welding process.
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 premier titanium alloy. This versatile duplex alpha + beta titanium alloy integrates aluminum as the alpha stabilizer and vanadium as the beta stabilizer, making it exceptionally robust for various applications. Capable of enduring low temperatures around 800°F (427°C), the ATI Ti-6Al-4V, Grade 5 alloy is indispensable in annealing, solution treating, and aging processes. It's highly sought after for compressor blades, disks, and rings in jet engines, fuselage and space capsule components, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and other critical forgings demanding a high strength-to-weight ratio.
This remarkable alloy is initially melted through high-tech methods such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). The remelting process involves one or two vacuum arc steps, ensuring unparalleled quality and consistency.
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
Annealing at 1,700-1,900°F (927 - 1,038°C) achieves optimal hardness, tensile strength, and fatigue strength, crucial for demanding applications.
DAXUN 6-4 Grade 5 Titanium Tube presents 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
The finest properties are achieved in small cross-sections with rapid quenching in the solution-treated and aged state. Larger cross-sections or delayed quenching may result in less than optimal characteristics.
Hardness
Typical hardness ranges from Rockwell C 30-34 in the annealed condition to approximately Rockwell C 35-39 in the solution and aged condition.
Forgeability/Formability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is a marvel of engineering. This high-performance titanium tube is forged at a rigorous 1,750°F (954°C) with a precise final forging temperature of 1,450°F (788°C). To achieve optimal results, a substantial reduction of at least 35% is advised, ensuring the highest quality and performance standards.
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, presents challenges when attempting to form at room temperature, even after annealing. Notably, severe forming operations such as bending or stretching can be effectively executed on the annealed material at elevated temperatures up to 1,200°F (649°C) without compromising its mechanical integrity. For hot sizing or forming, creep forming is a viable method within temperatures ranging from 1,000 to 1,200°F (538 to 649°C).
Machinability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, exhibits excellent machinability when employing techniques akin to those used for austenitic stainless steels. To maximize efficiency, it is recommended to utilize slow speeds, high feeds, robust tool rigidity, and a generous application of non-chlorinated cutting fluids.
Weldability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, demonstrates exceptional weldability whether in annealed or solution and partially aged conditions. Post-weld heat treatment allows for aging, ensuring durable and reliable joints.
During the welding process, it is crucial to prevent contamination with oxygen, nitrogen, and hydrogen to maintain the tube's integrity. Fusion welding should be conducted in an inert gas-filled chamber or with an inert gas tail shield to protect the molten metal and adjacent hot zones. Additionally, methods such as spot welding, seam welding, and flash welding can be executed effectively without the necessity of a protective atmosphere.
Special Considerations
Attention to potential contamination is paramount for the DAXUN Ti-6Al-4V Titanium Tube, Grade 5. Improper pickling and absorption of oxygen, nitrogen, and carbon during processes such as forging, heat treating, or brazing can lead to hydrogen contamination. This may significantly reduce ductility and negatively impact notch sensitivity and formability, necessitating meticulous handling and processes.
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