Daxun Alloy's Grade 1 pure titanium tubes offer unmatched quality:
Our seamless and welded titanium tubes boast 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 superior 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 and lightweight properties, makes it the perfect solution for challenging chemical environments. Our tubes meet the following standards: 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)
Grade 2 Titanium tube, the industry favorite, strikes a perfect balance between moderate strength and reasonable ductility. It excels in highly oxidizing and slightly reducing conditions (including chlorides) and provides superb corrosion resistance. Widely used across chemical and offshore industries, aircraft manufacturing, and heat exchangers, it meets the demands of strength and formability. Applications include 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 using standard techniques. It can be easily machined with careful tool maintenance and ample coolant use. Similar to machining austenitic stainless steels, cuts should be deep and continuous with slow feeds and speeds.
Stock Availability
Daxun Alloys maintains a diverse inventory of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes to meet your needs.
Weight Reduction
CP 2 Grade Titanium tubes are distinguished by their low density and high strength-to-weight ratio, making them ideal for weight-sensitive applications without compromising strength. These tubes are cold formable, exhibit excellent ductility, and can be welded using conventional TIG and MIG processes, with inert gas shielding to prevent weld embrittlement.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tubes present an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. At around 885°C (1625°F), this structure transitions to a beta (body-centered cubic) form. The transformation temperature may vary with impurities or alloying elements, which create distinct alpha and beta transformation zones: below the alpha zone, the alloy is all alpha, and above the beta zone, all beta. Between these points, both alpha and beta forms exist. Typical transformation temperatures are 890°C (1635°F) and 913°C (1675°F) for Grade 2 titanium.
Grade 2 Titanium Seamless Pipe Manufacturing Process
Daxun's ASTM B338 Grade 2 titanium seamless tubes are meticulously crafted from hollow blanks through hot extrusion or oblique rolling and piercing processes, followed by multiple cold rolling stages. Ensuring continuous perimeters throughout, the manufacturing process includes: sponge titanium vacuum arc melting, ingot blanking, hollow blank cleaning, cutting and feeding, hot extrusion or oblique rolling plus 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, employing the cutting-edge automatic arc welding (TIG) process. The exhaustive production process encompasses: 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. Post-formation and welding, the welded pipes undergo an essential stress relief heat treatment. Notably, Daxun ensures the utilization of any filler materials during the welding process.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium TubeTitanium Alloy - (UNS R56400)
Introduction
DAXUN Ti-6Al-4V Titanium Tube, also referred to as Grade 5 (UNS R56400), represents the pinnacle of titanium alloys. This duplex alpha+beta titanium alloy incorporates aluminum as the alpha stabilizer and vanadium as the beta stabilizer. Renowned for its high strength, this alloy remains effective at low temperatures around 800°F (427°C). The ATI Ti-6Al-4V, Grade 5 alloy is integral to processes such as annealing, solution treating, and aging. Its applications span a wide range, from compressor blades, disks, and rings for jet engines, to fuselage and space capsule components, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and critical forgings necessitating a superior strength-to-weight ratio.
The alloy undergoes initial melting through advanced techniques like vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM), followed by one or two steps of vacuum arc remelting for optimal results.
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 PropertiesThe Ti-6Al-4V Titanium Tube exhibits a melting range between 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 Annealing at temperatures between 1,700-1,900°F (927 - 1,038°C) is essential for achieving high hardness, tensile strength, and fatigue strength.
DAXUN 6-4 Grade 5 Titanium Tube offers versatile heat treatment options.
1. Annealing: Conducted at 1,275 -1,400°F (691 - 760°C) for ½ to 2 hours, followed by air or furnace cooling.
2. Stress Relief Annealing: Executed at 1,000 -1,200°F (538 - 649°C) for 1 to 8 hours, then air or furnace cooled.
3. Solution Heat Treating: Performed at 1,675 -1,750°F (913 - 954°C) for 1 hour, followed by a water quench.
4. Aging: Carried out at 975 -1,025°F (524 - 552°C) for 4 to 8 hours, then air cooled.
Optimum Properties Small cross-sections with rapid quenching yield optimal properties in the solution treated and aged state. Larger cross-section sizes or delayed quenching may result in suboptimal properties.
HardnessTypical hardness levels range from Rockwell C 30-34 in the annealed condition to approximately Rockwell C 35-39 in the solution treated and aged condition.
Forgeability/Formability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is masterfully forged at a precise temperature of 1,750°F (954°C) with a final forging touch at 1,450°F (788°C). For optimal performance and superior results, a reduction of at least 35% is highly recommended.
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube presents challenges in forming at room temperature, even when annealed. For more demanding forming tasks like bending or stretching, the material can be annealed and processed at temperatures up to 1,200°F (649°C) without compromising its mechanical integrity. Creep forming is an option for hot sizing or shaping, operating effectively within the range of 1,000 to 1,200°F (538 to 649°C).
Machinability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube demonstrates excellent machinability akin to austenitic stainless steels. Employing slow speeds, high feeds, robust tool rigidity, and generous amounts of non-chlorinated cutting fluids ensures efficient machining.
Weldability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube offers exceptional weldability in both annealed and solution plus partially aged states. Aging is seamlessly achieved during post-weld heat treatment.
To maintain high quality, it's crucial to prevent contamination from oxygen, nitrogen, and hydrogen. Fusion welding can be conducted in an inert gas-filled chamber or with an inert gas tail shield protecting the molten metal and adjacent hot zones. Spot welding, seam welding, and flash welding can be executed efficiently without requiring a protective atmosphere.
Special Considerations DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube must be handled with care to avoid hydrogen contamination from improper pickling and the absorption of oxygen, nitrogen, and carbon during processes like forging, heat treating, and brazing. Such contamination can diminish ductility and adversely affect notch sensitivity and formability.