Daxun Alloy's Pure Titanium Grade 1 Tubes include:
Seamless and welded titanium tubes exhibiting excellent ductility and cold formability, perfect for deep drawing applications. Grade 1 titanium tubes are renowned for their remarkable general and seawater corrosion resistance, and exceptional resistance to oxidizing, neutral, and slightly reducing solutions (including chlorides).
With low density-approximately half that of nickel-based alloys-combined with high strength, light weight, and superior corrosion resistance, titanium is the material of choice for harsh chemical environments. Our execution standards include 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)
This titanium tube is the industry favorite for its superb balance of moderate strength and reasonable ductility. It offers unmatched corrosion resistance in highly oxidizing and slightly reducing environments (including chlorides). Widely used in the chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast systems, industrial and aerospace components, CPI equipment, and piping applications.
Fabrication
Titanium Grade 2 is highly responsive to cold forming using standard methods. It can be readily machined, but it's crucial to maintain sharp tools and use liberal amounts of coolant. Much like machining austenitic stainless steels, cuts need to be deep and continuous with slow feeds and speeds.
Stock Availability
Daxun Alloys stocks CP 2 Grade Titanium Seamless and Welded Pipes in a diverse array of sizes.
Weight Reduction
CP 2 grade titanium tubes, with their low density and high strength-to-weight ratio, are ideal for applications demanding weight reduction without compromising overall strength. They are cold formable, possess good ductility, and can be welded using conventional TIG and MIG processes, requiring inert gas shielding to prevent weld zone embrittlement.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tube has an alpha (hexagonal close-packed) crystal structure, similar to commercially pure titanium grades 1 and 3. Around 885°C [1625°F], it transitions to a beta (body-centered cubic) structure. This temperature can be modified by the type and amount of impurities or alloying additions. Alloying elements also split the single equilibrium transformation temperature into two zones: the alpha transformation zone (below which the alloy is entirely alpha) and the beta transformation zone (above which the alloy is entirely beta). Between these temperatures, both alpha and beta forms coexist. Typical alpha and beta 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 manufactures ASTM B338 Grade 2 titanium seamless tubes from hollow blanks via hot extrusion or oblique rolling and piercing, followed by multiple cold rolling processes. The continuity of perimeters at all manufacturing stages is essential. The seamless tube production process includes: vacuum arc melting of sponge titanium to form ingots, blanking to get 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 is meticulously crafted from annealed flat-rolled steel plates or steel strips using the state-of-the-art automatic arc welding (TIG) process. The production journey encompasses several critical stages: titanium plate uncoiling, shearing, butt welding, meticulous cleaning, pipe forming, precision TIG welding, eddy current testing, pre-sizing, thorough annealing, precision reducing and sizing, straightening, dual eddy current testing, caliper marking, cutting, ultrasonic testing, hydrostatic testing, final inspection, and premium packaging. Post-formation and welding, each welded pipe undergoes a rigorous stress relief heat treatment to ensure optimal performance. Notably, 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 pinnacle of titanium alloys. This duplex alpha+beta titanium alloy, enhanced with aluminum as the alpha stabilizer and vanadium as the beta stabilizer, offers exceptional strength and versatility. It excels in low-temperature applications, maintaining robustness up to 800°F (427°C). Widely favored in aerospace and high-performance industries, the ATI Ti-6Al-4V, Grade 5 alloy is pivotal for annealing, solution treating, and aging operations. Key applications include compressor blades, disks, and rings for jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and critical forgings, all benefiting from its impressive strength-to-weight ratio.
The alloy's initial melting is performed via advanced techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Subsequent remelting is achieved through one or two rigorous vacuum arc steps.
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
Annealed at 1,700-1,900°F (927 - 1,038°C) when high hardness, tensile strength, and fatigue strength are paramount.
DAXUN 6-4 Grade 5 Titanium Tube offers versatile heat treatment options to meet diverse industrial needs.
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
Achieving optimal properties in the solution treated and aged condition is best with small cross sections subjected to rapid quenching. Larger cross-section sizes or delayed quenching may result in suboptimal attributes.
Hardness
In the annealed state, the typical hardness ranges from Rockwell C 30-34, while the solution and aged condition boasts a hardness of approximately Rockwell C 35-39.
Forgeability/Formability
Introducing the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, meticulously forged at a precise temperature of 1,750°F (954°C) with a final forging process at 1,450°F (788°C). To achieve optimal results, a reduction of at least 35% is highly recommended.
Our DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, presents challenges in forming at room temperature, even in its annealed state. To facilitate severe forming operations such as bending or stretching, the material can be treated at temperatures up to 1,200°F (649°C) without altering its mechanical prowess. For hot sizing or forming, creep forming techniques are ideal 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 expertly machined using methods akin to those for austenitic stainless steels. Employ slow speeds, high feeds, ensure tool rigidity, and utilize substantial amounts of non-chlorinated cutting fluids for best results.
Weldability
The DAXUN Ti-6Al-4V Titanium Tube Grade 5 Titanium Tube offers excellent weldability in both its annealed and solution or partially aged conditions, with aging
achieved through post-weld heat treatment. To maintain integrity, avoid contamination from oxygen, nitrogen, and hydrogen. Fusion welding can be conducted in an inert gas-filled chamber or with an inert gas tail shield over the molten metal and adjacent hot zones. Additionally, spot welding, seam welding, and flash welding can be performed without a protective atmosphere.
Special Considerations
It is crucial to handle the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, with care to avoid hydrogen contamination from improper pickling or the absorption of oxygen, nitrogen, and carbon during processes such as forging, heat treating, and brazing. Such contamination can reduce ductility and negatively impact notch sensitivity and formability.
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