Daxun Alloy's pure titanium Grade 1 titanium tubes include:
seamless titanium tubes and welded titanium tubes, which have excellent ductility and cold formability, and are ideal for deep drawing. Grade 1 titanium tubes are known for their good general and seawater corrosion resistance and excellent resistance to oxidizing, neutral and slightly reducing media (solutions) (including chlorides).
Titanium's low density (about half that of nickel-based alloys), high strength, light weight and corrosion resistance make it an excellent choice for a variety of harsh chemical conditions. Execution standards are: 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)
This is the most often used titanium tube for industrial applications, providing a superb balance of moderate strength and reasonable ductility. It offers excellent corrosion resistance in both highly oxidising and slightly reducing conditions (including chlorides). It provides good corrosion protection in the chemical and offshore industries, as well as aircraft manufacture, where strength and ease of forming are required. It's also utilised in heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and pipes.
Fabrication
Titanium Grade 2 responds well to cold forming using standard methods. It can be readily machined, but special attention must be paid to maintaining sharp tools and the liberal use of coolant. As with machining austenitic stainless steels, cuts should be deep and continuous with slow feeds and speeds.
Stock Availability
Daxun Alloys stocks CP 2 Grade Titanium Seamless and Welded Pipes in a variety of sizes.
Weight Reduction
CP 2 grade titanium tubes have low density and a high strength-to-weight ratio, making them suitable for applications where weight reduction is required without sacrificing overall strength. They are cold formable, have good ductility, and can be welded using conventional TIG and MIG processes, although inert gas shielding is required to prevent embrittlement of the weld zone.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tube has an alpha (hexagonal close-packed) crystal structure, just like commercially pure titanium grades 1 and 3. At about 885°C [1625°F], it transforms to a beta (body-centered cubic) structure. This transformation temperature can be increased or decreased depending on the type and amount of impurities or alloying additions. The addition of alloying elements also divides the single temperature of the equilibrium transformation into two temperature zones: the alpha transformation zone, below which the alloy is all alpha, and the beta transformation zone, above which the alloy is all beta. Between these two temperatures, both alpha and beta forms exist. 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's ASTM B338 Grade 2 titanium seamless tubes are made from hollow blanks by hot extrusion process or oblique rolling and piercing process, followed by multiple cold rolling processes. Titanium seamless tubes should have continuous perimeters at all stages of the manufacturing operation. The de novo manufacturing of titanium seamless tubes mainly includes: sponge titanium vacuum arc melting ingot blanking to get 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 meticulously crafted from annealed flat-rolled steel plates or strips using the state-of-the-art automatic arc welding (TIG) process. The sophisticated production workflow encompasses: titanium plate uncoiling, shearing butt welding, cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing, annealing, precision reducing and sizing, straightening, additional eddy current testing, caliper marking, cutting, ultrasonic testing, hydrostatic testing, final inspection, and premium packaging. To ensure optimal performance, the welded pipes undergo a vital stress relief heat treatment post-forming and welding. Notably, Daxun employs only the highest-grade filler materials during the welding process.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium TubeTitanium Alloy - (UNS R56400)
Introduction
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400), stands as the pinnacle of titanium alloy innovation. This duplex alpha+beta titanium alloy integrates aluminum as the alpha stabilizer and vanadium as the beta stabilizer, delivering exceptional strength and versatility. Capable of withstanding temperatures as low as 800°F (427°C), this premium alloy is ideal for a wide range of high-performance applications including annealing, solution treating, and aging. It is indispensable in the manufacturing of compressor blades, disks, and rings for jet engines, fuselage and space capsule components, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and critical forgings that demand an outstanding strength-to-weight ratio.
The alloy is initially crafted through advanced melting techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM), followed by meticulous remelting in one or two vacuum arc steps.
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 PropertiesTi-6Al-4V Titanium Tube boasts a melting range of 2,800-3,000°F (1,538 - 1,649°C), ensuring unmatched performance in demanding environments.
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 superior hardness, tensile strength, and fatigue resistance.
The versatile DAXUN 6-4 Grade 5 Titanium Tube can be subjected to various heat treatment processes to meet specific requirements.
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, followed by air or furnace cooling.
3. Solution Heat Treating: 1,675 -1,750°F (913 - 954°C) for 1 hour, followed by a rapid water quench.
4. Aging: 975 -1,025°F (524 - 552°C) for 4 to 8 hours, followed by air cooling.
Optimum Properties Achieving superior properties requires small cross sections with rapid quenching in the solution treated and aged condition. Larger cross-sections or delayed quenching may result in reduced performance.
HardnessIn the annealed condition, typical hardness ranges from Rockwell C 30-34, while in the solution treated and aged condition, it approximates Rockwell C 35-39.
Forgeability/Formability The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, showcases exceptional craftsmanship. Forged at a high initial temperature of 1,750°F (954°C) and finishing at a precise 1,450°F (788°C), this titanium tube achieves optimal characteristics when reduced by at least 35%. Explore the durability and reliability of our meticulously forged Grade 5 Titanium Tube.
While forming the DAXUN Ti-6Al-4V Titanium Tube, Grade 5, proves challenging at room temperature-even after annealing-the material truly excels under heat. Severe forming operations such as bending or stretching can be effectively executed at temperatures up to 1,200°F (649°C) without compromising mechanical integrity. Moreover, our advanced creep forming techniques facilitate hot sizing or shaping at temperatures from 1,000 to 1,200°F (538 to 649°C), ensuring precision and durability.
Machinability The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, can be expertly machined using methods tailored for austenitic stainless steels. By employing slow speeds, high feeds, and ensuring exceptional tool rigidity, coupled with generous applications of non-chlorinated cutting fluids, optimal machining results are guaranteed.
Weldability The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, demonstrates excellent weldability. Whether in annealed or solution and partially aged conditions, this titanium tube remains versatile and reliable. Aging during post-weld heat treatment ensures strength and durability.
To achieve superior welds, precautions must be taken to prevent contamination from oxygen, nitrogen, and hydrogen. Fusion welding of the DAXUN Ti-6Al-4V Titanium Tube can be executed within an inert gas-filled chamber or by employing an inert gas tail shield over the molten metal and adjacent hot zones. Our titanium tubes also support spot welding, seam welding, and flash welding without necessitating a protective atmosphere.
Special Considerations The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, warrants specific considerations to maintain its superior properties. Beware of hydrogen contamination from improper pickling and the absorption of oxygen, nitrogen, and carbon during processes such as forging, heat treating, and brazing. Such contamination can negatively impact the ductility, notch sensitivity, and formability of the titanium tube. Adhering to precise and controlled processes ensures the highest quality and performance.
