Daxun Alloy's Pure Titanium Grade 1 Tubes Include:
Seamless and welded titanium tubes, showcasing remarkable ductility and cold formability, ideal for deep drawing. Grade 1 titanium tubes excel with general and seawater corrosion resistance, as well as superior resistance to oxidizing, neutral, and slightly reducing media (solutions), including chlorides.
Titanium's low density (approximately half that of nickel-based alloys), combined with high strength, lightweight, and exceptional corrosion resistance, make it the perfect choice for harsh 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 applications, this titanium tube balances moderate strength with reasonable ductility. It ensures excellent corrosion resistance in both highly oxidizing and slightly reducing conditions, including chlorides. Beneficial for the chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and piping systems.
Fabrication
Titanium Grade 2 is highly responsive to cold forming with standard methods. It can be efficiently machined if sharp tools are maintained and ample coolant is used. Similar to machining austenitic stainless steels, cuts should be deep and continuous with slow feeds and speeds.
Stock Availability
Daxun Alloys offers a wide range 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, ideal for applications needing weight reduction without compromising strength. These tubes are cold formable, possess good ductility, and can be welded using conventional TIG and MIG processes, requiring inert gas shielding to avoid embrittlement in the weld zone.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tube exhibits an alpha (hexagonal close-packed) crystal structure, similar to commercially pure titanium grades 1 and 3. Around 885°C [1625°F], it transforms into a beta (body-centered cubic) structure. The transformation temperature may vary based on impurities or alloying elements, which divide the single equilibrium transformation temperature into two zones: the alpha zone (all alpha) below and the beta zone (all beta) above. Between these temperatures, both alpha and beta forms coexist. Typical transformation temperatures for Grade 2 titanium are 890°C (1635°F) and 913°C (1675°F).
Grade 2 Titanium Seamless Pipe Manufacturing Process
Daxun's ASTM B338 Grade 2 titanium seamless tubes are meticulously manufactured from hollow blanks via hot extrusion or oblique rolling and piercing, followed by multiple cold rolling stages. Seamless tubes must maintain continuous perimeters throughout production. The comprehensive manufacturing process includes: sponge titanium, vacuum arc melting, ingot blanking to obtain hollow blanks, cleaning, cutting, and feeding, hot extrusion or oblique rolling with piercing, degreasing, drying, cutting, online annealing, straightening, pickling, multiple cold rolling stages, degreasing, drying, vacuum annealing, straightening, cutting, pickling, final inspection, marking (DAXUN), and packaging.
Grade 2 Titanium Welded Pipe Manufacturing Process
Experience the unparalleled quality of Daxun's ASTM B338 Grade 2 titanium welded pipe, meticulously crafted from annealed flat-rolled steel plate or steel strip using the advanced TIG (automatic arc welding) process. Our comprehensive production processes include: uncoiling, shearing, butt welding, cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing, annealing, precision reducing, and sizing, straightening, caliper marking, cutting, ultrasonic testing, hydrostatic testing, final inspection, and packaging. To ensure optimal durability, all welded pipes undergo at least one stress relief heat treatment post-forming and welding. Importantly, Daxun ensures no filler materials are used during the welding process, guaranteeing the highest quality.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium Tube
Titanium Alloy - (UNS R56400)
Introduction
Introducing the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400), the most sought-after titanium alloy. As a duplex alpha+beta titanium alloy, it employs aluminum as the alpha stabilizer and vanadium as the beta stabilizer. This highly robust alloy is capable of withstanding extreme low temperatures, approximately 800°F (427°C). The ATI Ti-6Al-4V, Grade 5 alloy is versatile, suitable for annealing, solution treating, and aging. It is extensively used in manufacturing compressor blades, disks, and rings for jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and vital forgings offering a high strength-to-weight ratio.
The alloy is initially melted using advanced techniques like vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM), followed by one or two vacuum arc remelting 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
For high hardness, tensile strength, and fatigue strength, the titanium tube is annealed at 1,700-1,900°F (927 - 1,038°C).
DAXUN 6-4 Grade 5 Titanium Tube offers multiple 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
Achieve optimal properties with small cross sections and rapid quenching in the solution treated and aged condition. Note that larger cross-section sizes and/or delayed quenching may result in suboptimal properties.
Hardness
In the annealed condition, typical hardness ranges from Rockwell C 30-34, and in the solution and aged condition, it is approximately Rockwell C 35-39.
Forgeability/Formability
The DAXUN Ti-6Al-4V Titanium Tube, also known as Grade 5 Titanium Tube, is engineered with exceptional precision. Forged initially at 1,750°F (954°C) and undergoing final forging at 1,450°F (788°C), a substantial reduction of at least 35% is essential to achieve optimal results, ensuring superior performance and reliability.
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, exhibits notable resistance to deformation at room temperature, even post-annealing. To facilitate severe forming processes such as bending or stretching, operations can be conducted on annealed material at elevated temperatures up to 1,200°F (649°C) without altering its mechanical integrity. For precision in hot sizing or forming, creep forming is recommended within a temperature range of 1,000 to 1,200°F (538 to 649°C).
Enhanced Machinability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, demonstrates excellent machinability, akin to austenitic stainless steels. Employing slow speeds, high feeds, and robust tool rigidity, along with copious amounts of non-chlorinated cutting fluids, ensures precise and efficient machining.
Superior Weldability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, exhibits excellent weldability whether in annealed, solution-treated, or partially aged states.
Post-weld heat treatment is essential for aging. Precautionary measures must be taken to prevent contamination by oxygen, nitrogen, and hydrogen. Fusion welding can be efficiently conducted in an inert gas-filled chamber or with an inert gas tail shield over the molten and adjacent hot zones. Techniques such as spot welding, seam welding, and flash welding are viable without the need for a protective atmosphere.
Critical Considerations
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, may be susceptible to hydrogen contamination from improper pickling processes and absorption of oxygen, nitrogen, and carbon during forging, heat treatment, brazing, and similar processes. Such contamination can lead to reduced ductility, increased notch sensitivity, and compromised formability.
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