Daxun Alloy's Pure Titanium Grade 1 Tubes Include:
Seamless titanium tubes and welded titanium tubes, renowned for their exceptional ductility and cold formability, making them ideal for deep drawing applications. Grade 1 titanium tubes offer outstanding general and seawater corrosion resistance, along with superior resistance to oxidizing, neutral, and slightly reducing media (solutions), including chlorides.
With a low density-about half that of nickel-based alloys-combined with high strength, light weight, and remarkable corrosion resistance, titanium stands out as an optimal choice for a variety of challenging chemical environments. Adherence to execution standards includes: 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)
As the most widely utilized titanium tube for industrial purposes, Grade 2 offers an excellent balance of moderate strength and satisfactory ductility. It excels in corrosion resistance under both highly oxidizing and slightly reducing conditions, including chlorides, making it ideal for applications in the chemical and offshore industries, aircraft manufacture, heat exchangers, hypochlorite systems, firewater systems, ballast water systems, industrial and aerospace components, CPI equipment, and piping.
Fabrication
Titanium Grade 2 is highly responsive to cold forming using standard techniques. While it can be readily machined, special care must be taken to maintain sharp tools and utilize liberal cooling. Similar to machining austenitic stainless steels, deep and continuous cuts with slow feeds and speeds are recommended.
Stock Availability
Daxun Alloys maintains an inventory of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes.
Weight Reduction
CP 2 Grade titanium tubes boast a low density and a high strength-to-weight ratio, making them perfect for applications requiring weight reduction without compromising strength. These tubes are cold formable, with good ductility, and can be welded using conventional TIG and MIG processes, provided that inert gas shielding is employed 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. Upon reaching approximately 885°C (1625°F), this structure transitions to a beta (body-centered cubic) form. This transformation temperature can vary based on the impurities or alloying additions. These alloying elements also create two distinct temperature zones: the alpha transformation zone below which the alloy is entirely alpha, and the beta transformation zone above which the alloy is fully beta. Between these zones, both alpha and beta forms coexist. Typical temperatures for these transformations in 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 are crafted from hollow blanks through a hot extrusion process or oblique rolling and piercing method, followed by multiple cold rolling stages. Throughout the manufacturing process, titanium seamless tubes maintain continuous perimeters. The comprehensive production of these tubes involves 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 epitomizes engineering precision and superior quality. Crafted from annealed flat-rolled steel plate or steel strip through an advanced automatic arc welding (TIG) process, this product undergoes a meticulous series of production 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. To ensure structural integrity, welded pipes are subject to at least one stress relief heat treatment post-forming and welding. Notably, Daxun employs filler materials selectively during the welding process to achieve optimal results.
Ti-6Al-4V Titanium Pipe- Grade 5 Titanium Tube
Titanium Alloy - (UNS R56400)
Introduction
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400) stands as the premier choice among titanium alloys. As a duplex alpha+beta alloy, it utilizes aluminum as the alpha stabilizer and vanadium as the beta stabilizer, delivering unparalleled strength and versatility. This high-strength alloy excels at low temperatures, up to approximately 800°F (427°C). Renowned for its applications in annealing, solution treating, and aging, the ATI Ti-6Al-4V, Grade 5 alloy finds extensive use in critical aerospace components, including compressor blades, disks, rings for jet engines, fuselage and space capsule elements, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and high strength-to-weight ratio forgings.
The alloy's initial melting process employs techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM), followed by one or two stages of vacuum arc remelting to ensure superior 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
Annealed at 1,700-1,900°F (927 - 1,038°C) to achieve enhanced hardness, tensile strength, and fatigue strength.
DAXUN 6-4 Grade 5 Titanium Tube offers diverse heat treatment options to suit varying requirements.
1. Annealing: Conduct within 1,275 -1,400°F (691 - 760°C) for ½ to 2 hours, followed by air or furnace cooling.
2. Stress Relief Annealing: Perform at 1,000 -1,200°F (538 - 649°C) for 1 to 8 hours, then air or furnace cool.
3. Solution Heat Treating: Maintain at 1,675 -1,750°F (913 - 954°C) for 1 hour, followed by water quenching.
4. Aging: Achieve at 975 -1,025°F (524 - 552°C) for 4 to 8 hours, concluded with air cooling.
Optimum Properties
Ideal properties are attained in small cross-sections with rapid quenching during the solution-treated and aged condition. Larger cross-sections and/or delayed quenching may yield suboptimal properties.
Hardness
Typical hardness measures Rockwell C 30-34 in the annealed state and approximately Rockwell C 35-39 in the solution-treated and aged condition.
Forgeability/Formability
Experience the unparalleled strength of DAXUN Ti-6Al-4V Titanium Tube, Grade 5. Forged precisely at 1,750°F (954°C) and achieving its final form at 1,450°F (788°C), this titanium tube is crafted for excellence. For optimal performance, we recommend a reduction of at least 35%.
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is a marvel of durability, yet presenting challenges in forming at room temperature, even when annealed. Fear not, for severe forming operations like bending or stretching can be effortlessly performed on the annealed material at temperatures soaring up to 1,200°F (649°C) while retaining its mechanical integrity. Hot sizing or forming can be seamlessly achieved via creep forming between 1,000 to 1,200°F (538 to 649°C).
Machinability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5, offers exceptional machinability using techniques designed for austenitic stainless steels. Employ slow speeds, high feeds, robust tool rigidity, and copious amounts of non-chlorinated cutting fluids to achieve impeccable results.
Weldability
Easily weld DAXUN Ti-6Al-4V Titanium Tube, Grade 5, whether in annealed or solution and partially aged conditions. The aging process is perfected during post-weld heat treatment. It's crucial to prevent contaminants like oxygen, nitrogen, and hydrogen. Fusion welding can be executed in an inert gas-filled chamber or with an inert gas tail shield to protect the molten metal and nearby hot zones. Additionally, spot welding, seam welding, and flash welding are achievable without the need for a protective atmosphere.
accomplished during post-weld heat treatment. Precautions must be taken to avoid contamination with oxygen, nitrogen, and hydrogen. Fusion welding may be performed in an inert gas-filled chamber or with the use of an inert gas tail shield over the molten metal and nearby hot zones. Spot welding, seam welding, and flash welding may all be performed without the use of a protective atmosphere.
Special Considerations
When utilizing DAXUN Ti-6Al-4V Titanium Tube, Grade 5, it is imperative to avoid contamination from hydrogen during improper pickling, and from the absorption of oxygen, nitrogen, and carbon during processes such as forging, heat treating, and brazing. Such contamination can significantly reduce ductility and adversely affect notch sensitivity and formability.
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