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. Renowned for their excellent general and seawater corrosion resistance, Grade 1 titanium tubes also stand out for their superior resistance to oxidizing, neutral, and slightly reducing media (including chlorides).
With its low density, roughly half that of nickel-based alloys, titanium combines high strength, lightweight, and outstanding corrosion resistance. This makes it an ideal choice for diverse, demanding chemical environments. 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)
Widely used in industrial settings, Grade 2 titanium tubes strike an excellent balance between moderate strength and good ductility. They offer superb corrosion resistance under highly oxidizing and slightly reducing conditions, including chlorides. These tubes are ideal for chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and piping.
Fabrication
Titanium Grade 2 is highly amenable to cold forming using standard techniques. It is easily machined, though maintaining sharp tools and using ample coolant is crucial. As with machining austenitic stainless steels, cuts should 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 various sizes.
Weight Reduction
CP 2 grade titanium tubes feature low density and a high strength-to-weight ratio, making them ideal for applications demanding weight reduction without compromising strength. These tubes are cold formable, exhibit good ductility, and can be welded using conventional TIG and MIG methods, provided that inert gas shielding is employed 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, akin to commercially pure titanium grades 1 and 3. Upon reaching approximately 885°C [1625°F], it transitions to a beta (body-centered cubic) structure. This transformation temperature varies with the type and amount of impurities or alloying elements. The addition of alloying elements creates distinct alpha and beta transformation zones, providing specific temperature ranges for each. 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 undergo production using hollow blanks through either hot extrusion or oblique rolling and piercing processes, followed by multiple cold rolling stages. Titanium seamless tubes maintain continuous perimeters throughout all manufacturing stages. Key steps in manufacturing titanium seamless tubes include: sponge titanium vacuum arc melting, ingot blanking to obtain hollow blanks, cleaning, cutting, feeding, hot extrusion or oblique rolling + 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 artfully crafted from annealed flat-rolled steel plate or steel strip using the state-of-the-art automatic arc welding (TIG) process. The 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 unparalleled durability, welded pipes undergo a minimum of one stress relief heat treatment post-forming and welding. Daxun ensures no filler materials are used during the welding process.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium Tube
Titanium Alloy - (UNS R56400)
Introduction
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400) stands as the most sought-after titanium alloy. This duplex alpha+beta titanium alloy harnesses 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 applications span from compressor blades, disks, and rings for jet engines, to fuselage and space capsule components, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and critical forgings necessitating a high strength-to-weight ratio.
The alloy is initially melted using advanced methods such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). The remelting process is executed in one or two vacuum arc steps, ensuring meticulous refinement.
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) to achieve superior hardness, tensile strength, and fatigue strength.
DAXUN 6-4 Grade 5 Titanium Tube is versatile with a variety of heat treatment processes.
1. Annealing: 1,275 - 1,400°F (691 - 760°C) for ½ to 2 hours, followed by air or furnace cooling.
2. Stress Relief Annealing: 1,000 - 1,200°F (538 - 649°C) for 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, followed by water quenching.
4. Aging: 975 - 1,025°F (524 - 552°C) for 4 to 8 hours, followed by air cooling.
Optimum Properties
Optimal properties are achieved in small cross sections with rapid quenching in the solution treated and aged condition. Larger cross-sections and/or delayed quenching may result in suboptimal properties.
Hardness
The typical hardness in the annealed condition ranges between Rockwell C 30-34, and approximately Rockwell C 35-39 in the solution-treated and aged condition.
Forgeability/Formability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is meticulously forged at a precise temperature of 1,750°F (954°C) with a concluding forging temperature set at 1,450°F (788°C). To achieve optimal results, a significant reduction of at least 35% is highly recommended.
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube presents challenges when forming at room temperature, even post-annealing. Consequently, rigorous forming operations, such as bending or stretching, are best performed on the annealed material at elevated temperatures up to 1,200°F (649°C) to maintain its mechanical properties. For hot sizing or forming, creep forming at temperatures between 1,000 to 1,200°F (538 to 649°C) is a viable option.
Machinability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is machinable using techniques akin to those for austenitic stainless steels. Employing slow speeds, high feeds, robust tool rigidity, and copious amounts of non-chlorinated cutting fluids will yield the best results.
Weldability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube exhibits excellent weldability in both the annealed and solution plus partially aged conditions, with aging
achieved through post-weld heat treatment. To prevent contamination, it is crucial to avoid exposure to oxygen, nitrogen, and hydrogen. Fusion welding should be performed within an inert gas-filled chamber or with the use of an inert gas tail shield to protect the molten metal and surrounding hot zones. Additionally, spot welding, seam welding, and flash welding can be executed without a protective atmosphere.
Special Considerations
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube requires special precautions to prevent contamination. Hydrogen contamination can occur from improper pickling, while forging, heat treating, and brazing processes can introduce oxygen, nitrogen, and carbon. Such contamination can diminish ductility and adversely affect notch sensitivity and formability.
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