Daxun Alloy's Pure Titanium Grade 1 Titanium Tubes Include:
Seamless titanium tubes and welded titanium tubes, which stand out for their exceptional ductility and cold formability, making them ideal for deep drawing applications. Grade 1 titanium tubes are renowned for their excellent general and seawater corrosion resistance, as well as their superb resistance to oxidizing, neutral, and slightly reducing media, including chlorides.
Titanium's low density (approximately half that of nickel-based alloys), combined with its high strength, light weight, and outstanding corrosion resistance, make it an unparalleled choice for challenging chemical environments. Execution 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)
This titanium tube is the most commonly used for industrial applications, offering a remarkable balance of moderate strength and reasonable ductility. It provides excellent corrosion resistance in both highly oxidizing and slightly reducing environments, including chlorides. Grade 2 titanium tubes are extensively utilized in 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.
Fabrication
Titanium Grade 2 is highly responsive to cold forming using standard methods. It can be easily machined; however, special care must be taken to maintain sharp tools and use ample coolant. Similar to machining austenitic stainless steels, cuts should be deep and continuous with slow feeds and speeds.
Stock Availability
Daxun Alloys maintains a ready stock of CP 2 Grade Titanium Seamless and Welded Pipes in a variety of sizes.
Weight Reduction
CP 2 grade titanium tubes feature low density and a superior strength-to-weight ratio, making them ideal for applications requiring weight reduction without compromising strength. They are cold formable, exhibit good ductility, and can be welded using standard TIG and MIG processes, provided that inert gas shielding is used 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, similar to commercially pure titanium grades 1 and 3. At approximately 885°C (1625°F), it transforms to a beta (body-centered cubic) structure. This transformation temperature can be adjusted based on the type and quantity of impurities or alloying additions. Alloying elements also modify the single equilibrium transformation temperature into 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 entirely beta. Between these two temperatures, both alpha and beta phases coexist. Typical transformation temperatures for Grade 2 titanium are 890°C (1635°F) and 913°C (1675°F) for alpha and beta, 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 process, followed by multiple cold rolling processes. Titanium seamless tubes maintain continuous perimeters throughout all stages of manufacturing. The comprehensive manufacturing process includes: sponge titanium vacuum arc melting, ingot blanking to obtain hollow blanks, cleaning, cutting, 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, employing the advanced automatic arc welding (TIG) process. The production journey encompasses a series of meticulous steps: 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 unparalleled quality, welded pipes undergo a mandatory stress relief heat treatment post-formation and welding. Notably, Daxun incorporates filler materials to fortify 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. As a duplex alpha+beta titanium alloy, it ingeniously employs aluminum as the alpha stabilizer and vanadium as the beta stabilizer. This remarkable alloy exhibits exceptional strength and can perform under low temperatures, approximately up to 800°F (427°C). ATI Ti-6Al-4V, Grade 5 is ideal for annealing, solution treating, and aging, making it indispensable in crafting compressor blades, disks, and rings for jet engines, fuselage and space capsule components, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and critical high strength-to-weight ratio forgings.
This alloy's initial melting process harnesses the efficiency of vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM) techniques. Subsequent remelting is conducted through one or dual vacuum arc processes.
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 boasts a melting range of 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 optimal hardness, tensile strength, and fatigue strength.
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 in the solution treated and aged condition. Larger cross-section sizes or delayed quenching may yield suboptimal properties.
Hardness
In its annealed state, the typical hardness is Rockwell C 30-34, while the solution-treated and aged condition yields a hardness of approximately Rockwell C 35-39.
Forgeability/Formability
Introducing the DAXUN Ti-6Al-4V Titanium Tube, a marvel in Grade 5 Titanium technology. This tube is meticulously forged at a robust 1,750°F (954°C), ensuring superior qualities, with a final forging touch at 1,450°F (788°C). For optimal results, a reduction of at least 35% is highly recommended.
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium, demands respect for its challenging formability at room temperature, even post-annealing. However, at elevated temperatures up to 1,200°F (649°C), severe operations like bending and stretching maintain the tube's mechanical properties. For precise hot sizing or forming, creep forming between 1,000°F to 1,200°F (538 to 649°C) is your solution.
Machinability
Unlock the potential of the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium, with advanced machining techniques akin to those for austenitic stainless steels. Employ slow speeds, high feeds, and ensure exceptional tool rigidity, complemented by substantial non-chlorinated cutting fluids for smooth machining.
Weldability
Experience seamless welding with the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium, whether in annealed or solution and partially aged states. Post-weld heat treatment accomplishes aging, enhancing the tube's properties.
Ensure contamination-free welding by averting exposure to oxygen, nitrogen, and hydrogen. Perform fusion welding in an inert gas-filled chamber or utilize an inert gas tail shield to protect the molten metal and hot zones. Spot welding, seam welding, and flash welding are efficiently executed without a protective atmosphere.
Special Considerations
Pay heed to the integrity of the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium. Avoid hydrogen contamination from improper pickling and oxygen, nitrogen, and carbon absorption during forging, heat treating, and brazing. Such contamination could diminish ductility and impair notch sensitivity and formability.
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