Daxun Alloy's Pure Titanium Grade 1 Tubes Feature:
Our seamless and welded titanium tubes exhibit outstanding ductility and cold formability, making them perfect for deep drawing applications. Renowned for their exceptional resistance to general and seawater corrosion, these Grade 1 titanium tubes also excel against oxidizing, neutral, and slightly reducing media-including chlorides.
Titanium's low density (approximately half that of nickel-based alloys), coupled with its high strength, lightweight nature, and superior corrosion resistance, make it an ideal choice for demanding chemical environments. Our tubes 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)
Widely utilized in industrial applications, Grade 2 titanium tubes strike a perfect balance between moderate strength and reasonable ductility. They offer unparalleled corrosion resistance in highly oxidizing and slightly reducing environments, including those with chloride presence. These tubes are invaluable in the chemical and offshore industries, aircraft manufacture, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and piping.
Fabrication
Titanium Grade 2 is highly responsive to cold forming with conventional methods. Although it can be easily machined, maintaining sharp tools and using liberal coolant is crucial. Just as with austenitic stainless steels, machining requires deep, continuous cuts with slow feed rates and speeds.
Stock Availability
Daxun Alloys maintains a comprehensive stock of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes to meet diverse needs.
Weight Reduction
Featuring low density and a superior strength-to-weight ratio, CP 2 grade titanium tubes are ideal for applications demanding weight reduction without compromising strength. They are cold formable, boast good ductility, and can be welded using standard TIG and MIG processes, provided inert gas shielding is used to prevent weld zone embrittlement.
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 to beta (body-centered cubic) at around 885°C (1625°F), with transformation temperatures influenced by impurity levels and alloy additions. Alloying elements create two temperature zones: the alpha transformation zone (below which the alloy remains all alpha) and the beta transformation zone (above which the alloy is all beta). Typical transformation temperatures for Grade 2 titanium are 890°C (1635°F) for alpha and 913°C (1675°F) for beta.
Grade 2 Titanium Seamless Pipe Manufacturing Process
Daxun's ASTM B338 Grade 2 titanium seamless tubes are meticulously crafted from hollow blanks through hot extrusion or oblique rolling and piercing processes, followed by multiple cold rolling steps. Our seamless tubes feature continuous perimeters throughout manufacturing. This detailed process includes: sponge titanium vacuum arc melting, ingot blanking to create hollow blanks, cleaning, cutting and feeding, hot extrusion or oblique rolling plus 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, utilizing the sophisticated automatic arc welding (TIG) process. The principal production stages encompass: 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 a mandatory stress relief heat treatment post-forming and welding. Daxun ensures no filler materials are used during the welding process, assuring the highest quality and integrity.
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 premier titanium alloy in the market. This duplex alpha+beta titanium alloy ingeniously employs aluminum as the alpha stabilizer and vanadium as the beta stabilizer. Renowned for its exceptional strength, this alloy remains robust at temperatures as low as 800°F (427°C). The ATI Ti-6Al-4V, Grade 5 alloy is ideally used for applications involving annealing, solution treating, and aging. It is the material of choice for compressor blades, disks, and rings in jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and critical forgings that demand a high strength-to-weight ratio.
This alloy is initially melted using advanced techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Subsequent remelting is accomplished through one or two vacuum arc steps, ensuring 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
When high hardness, tensile strength, and fatigue strength are required, the alloy is annealed at 1,700-1,900°F (927 - 1,038°C).
DAXUN 6-4 Grade 5 Titanium Tube offers versatile heat treatment options to suit various applications.
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, with 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 with small cross sections and rapid quenching in the solution-treated and aged condition. Larger cross-section sizes or delayed quenching may result in properties that are less than optimal.
Hardness
In the annealed condition, the typical hardness ranges from Rockwell C 30-34, whereas in the solution-treated and aged condition, it ranges from Rockwell C 35-39.
Forgeability/Formability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is expertly forged at a precise temperature of 1,750°F (954°C), culminating at a final forging temperature of 1,450°F (788°C). For optimal results, a reduction of at least 35% is highly recommended.
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube presents challenges in forming at room temperature, even when annealed. To overcome this, severe forming operations such as bending or stretching can be effectively performed on the annealed material at elevated temperatures up to 1,200°F (649°C) without compromising its mechanical properties. For hot sizing or forming, creep forming can be utilized 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 suitable for austenitic stainless steels. It requires slow speeds, high feeds, robust tool rigidity, and the application of copious amounts of non-chlorinated cutting fluids for optimal results.
Weldability
DAXUN Ti-6Al-4V Titanium Tube Grade 5 Titanium Tube excels in weldability, whether in the annealed state or solution and partially aged conditions. Post-weld aging is achieved through heat treatment.
Special precautions are necessary to avoid contamination with oxygen, nitrogen, and hydrogen. Fusion welding should be performed in an inert gas-filled chamber or with an inert gas tail shield over the molten metal and adjacent hot zones. Techniques such as 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 careful handling to prevent hydrogen contamination from improper pickling and the absorption of oxygen, nitrogen, and carbon during processes like forging, heat treating, and brazing. Such contamination can negatively impact ductility, notch sensitivity, and formability.
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