Daxun Alloy's exquisite pure titanium Grade 1 titanium tubes feature:
Seamless and welded titanium tubes crafted for superior ductility and cold formability, ideal for deep drawing applications. Grade 1 titanium tubes are celebrated for their exceptional resistance to general and seawater corrosion. They also exhibit excellent resistance to oxidizing, neutral, and slightly reducing media (solutions), including chlorides.
The inherent properties of titanium, such as its low density (approximately half that of nickel-based alloys), high strength, lightweight nature, and exceptional corrosion resistance, make it an ideal choice for various demanding chemical environments. Adhering to stringent execution standards including ASTM B338, ASTM B265, ASME SB265, ASTM F67, ISO 5832-2, 3.7025, and UNS R50250.
Grade 2 Titanium Tube (UNS R50400 / Werkstoff WS 3.7034)
Renowned as the go-to titanium tube for industrial applications, Grade 2 titanium tubes strike a perfect balance between moderate strength and reasonable ductility. Its outstanding corrosion resistance in both highly oxidizing and slightly reducing conditions (including chlorides) makes it invaluable in the chemical and offshore industries, aircraft manufacturing, and more. Ideal for heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and piping.
Fabrication
Grade 2 Titanium responds excellently to standard cold forming techniques. While it can be easily machined, it is crucial to use sharp tools and ample coolant. Similar to machining austenitic stainless steels, deep and continuous cuts with slow feeds and speeds are recommended.
Stock Availability
Daxun Alloys maintains an extensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes, ensuring immediate availability.
Weight Reduction
With a low density and high strength-to-weight ratio, CP 2 grade titanium tubes are ideal for applications demanding weight reduction without compromising strength. They are cold formable, possess good ductility, and are weldable using 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 tube boasts an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. At approximately 885°C (1625°F), it transforms into a beta (body-centered cubic) structure. Impurities or alloying additions can alter this transformation temperature. These elements also distinguish the alpha transformation zone, below which the alloy is entirely alpha, from the beta transformation zone, above which it is entirely beta. Between these zones, both alpha and beta forms coexist. Typical 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 undergo a meticulous manufacturing process starting from hollow blanks, processed through hot extrusion or oblique rolling and piercing, followed by multiple cold rolling stages. The continuous perimeter integrity is maintained throughout. The comprehensive production process includes: sponge titanium vacuum arc melting, ingot blanking to obtain hollow blanks, cleaning, cutting and 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 crafted from annealed flat-rolled steel plate or steel strip using the advanced automatic arc welding (TIG) process. The elaborate production process encompasses the following stages: 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. Notably, Daxun employs filler materials throughout the welding process to ensure superior quality.
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 premium choice in titanium alloys. This duplex alpha+beta titanium alloy leverages aluminum as the alpha stabilizer and vanadium as the beta stabilizer. Known for its exceptional strength, this alloy performs optimally even at low temperatures of around 800°F (427°C). The versatile ATI Ti-6Al-4V, Grade 5 alloy excels in applications including annealing, solution treating, and aging. It is indispensable for manufacturing compressor blades, disks, and rings for jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and high-strength-to-weight ratio critical forgings.
The alloy is initially melted using cutting-edge techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). The remelting process involves one or two steps of vacuum arc melting to ensure the highest quality.
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: 1,830°F (± 25°) [999°C (± 14°)]
Heat Treatment
Annealed at 1,700-1,900°F (927 - 1,038°C) to achieve high hardness, tensile strength, and fatigue resistance.
DAXUN 6-4 Grade 5 Titanium Tube offers 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
Optimal properties are achieved in small cross sections with rapid quenching during the solution treated and aged condition. Larger cross sections or delayed quenching may result in suboptimal properties.
Hardness
Typical hardness in the annealed condition ranges from Rockwell C 30-34 and approximately Rockwell C 35-39 in the solution treated and aged condition.
Forgeability/Formability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is meticulously crafted at 1,750°F (954°C) followed by a final forging at 1,450°F (788°C). For optimal results, a reduction by at least 35% is strongly recommended.
Shaping the DAXUN Ti-6Al-4V Titanium Tube, Grade 5, at room temperature poses challenges, even after annealing. Thus, it is advisable to conduct intensive forming operations, such as bending or stretching, on the annealed material at temperatures up to 1,200°F (649°C) to preserve its mechanical integrity. Additionally, creep forming is ideal for hot sizing or forming between 1,000 and 1,200°F (538 to 649°C).
Machinability of Grade 5 Titanium Tube
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, can be expertly machined utilizing techniques used for austenitic stainless steels. This includes operating at slow speeds, applying high feeds, ensuring robust tool rigidity, and employing generous amounts of non-chlorinated cutting fluids.
Weldability of Grade 5 Titanium Tube
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, demonstrates excellent weldability whether in the annealed, solution-treated, or partially aged states. Aging can be efficiently achieved during post-weld heat treatment.
Special precautions must be taken to prevent contamination by oxygen, nitrogen, and hydrogen. Fusion welding should be conducted within an inert gas-filled chamber or using an inert gas tail shield to protect the molten metal and hot zones. Spot, seam, and flash welding are feasible without a protective atmosphere.
Special Considerations for Grade 5 Titanium Tube
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, needs careful handling to avoid contamination from hydrogen due to improper pickling, as well as from oxygen, nitrogen, and carbon during forging, heat treating, or brazing. Such contamination can degrade ductility, notch sensitivity, and formability.
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