Daxun Alloy's premium pure titanium Grade 1 tubes include:
seamless and welded titanium tubes, celebrated for their remarkable ductility and exceptional cold formability, making them ideal for deep drawing processes. Our Grade 1 titanium tubes offer outstanding general and seawater corrosion resistance, and exhibit stellar resistance against oxidizing, neutral, and slightly reducing media (solutions), including chlorides.
Titanium's low density-approximately half that of nickel-based alloys-combined with its high strength, light weight, and unparalleled corrosion resistance, makes it an exceptional choice for a multitude of demanding chemical environments. Our tubes adhere to the stringent standards of 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)
Widely recognized as the go-to titanium tube for industrial applications, Grade 2 offers a superb balance of moderate strength and impressive ductility. It ensures excellent corrosion resistance in both highly oxidizing and slightly reducing environments, including chlorides. This grade is indispensable in the chemical and offshore industries, as well as in aircraft manufacturing, where strength and formability are crucial. It is also utilized in heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and piping solutions.
Fabrication
Titanium Grade 2 is highly responsive to cold forming using standard methods. It can be easily machined, provided sharp tools are maintained and coolant is used liberally. Similar to machining austenitic stainless steels, the machining of Titanium Grade 2 should involve deep, continuous cuts with slow feed rates and speeds.
Stock Availability
Daxun Alloys holds an extensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in a wide range of sizes.
Weight Reduction
CP 2 grade titanium tubes boast a low density and an exceptional strength-to-weight ratio, making them ideal for applications that demand weight reduction without compromising on strength. These tubes are cold formable, exhibit excellent ductility, and can be welded using conventional TIG and MIG processes, with inert gas shielding required to prevent embrittlement in the weld zone.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tube features an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. At approximately 885°C (1625°F), it transitions to a beta (body-centered cubic) structure. This transformation temperature can be adjusted based on the impurities or alloying additions. Alloying elements split the equilibrium transformation temperature into two 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 temperatures, both alpha and beta forms are present. Typical 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 meticulously crafted from hollow blanks using hot extrusion or oblique rolling and piercing processes, followed by multiple cold rolling steps. These seamless tubes maintain continuous perimeters throughout all manufacturing stages. The comprehensive manufacturing process includes: vacuum arc melting of sponge titanium, ingot blanking to create 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 plate or steel strip using an advanced automatic arc welding (TIG) process. Our stringent production processes encompass: titanium plate uncoiling, precision shearing, seamless butt welding, thorough cleaning, precise pipe forming, TIG welding, rigorous eddy current testing, pre-sizing, annealing, high-precision reducing and sizing, straightening, repeated eddy current testing, caliper marking, precise cutting, ultrasonic testing, hydrostatic testing, comprehensive final inspection, and secure packaging. Each welded pipe undergoes at least one stress relief heat treatment post formation and welding. Notably, Daxun ensures the use of top-grade filler materials during the welding process.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium Tube
Titanium Alloy - (UNS R56400)
Introduction
DAXUN's Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400) stands as 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, it performs impressively even at low temperatures of approximately 800°F (427°C). The ATI Ti-6Al-4V, Grade 5 alloy is indispensable for annealing, solution treating, and aging. It is the material of choice for compressor blades, disks, and rings in jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and critical forgings demanding a high strength-to-weight ratio.
The alloy's initial melting is achieved using state-of-the-art vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM) techniques. Subsequent remelting involves one or two meticulous 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), ideal when high hardness, tensile strength, and fatigue strength are required.
DAXUN's 6-4 Grade 5 Titanium Tube is versatile, allowing for various heat treatment techniques.
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, then air or furnace cooling.
3. Solution Heat Treating: 1,675-1,750°F (913-954°C) for 1 hour, followed by a water quench.
4. Aging: 975-1,025°F (524-552°C) for 4 to 8 hours, followed by air cooling.
Optimum Properties
Small cross-sections with rapid quenching yield exceptional properties in the solution treated and aged condition. Larger cross-sections and/or delayed quenching may lead to suboptimal properties.
Hardness
Typical hardness ranges from Rockwell C 30-34 in the annealed condition to approximately Rockwell C 35-39 in the solution and aged condition.
Forgeability/Formability
Introducing the DAXUN Ti-6Al-4V Titanium Tube, a Grade 5 Titanium marvel. Expertly forged at scorching temperatures of 1,750°F (954°C) with a final forging precision of 1,450°F (788°C), this tube showcases superior resilience. For optimum performance, a reduction of at least 35% is highly recommended.
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is known for its formidability challenges at room temperature, even when annealed. For enhanced malleability, severe forming processes like bending or stretching can be executed at elevated temperatures up to 1,200°F (649°C) without altering its mechanical integrity. Creep forming is ideal for hot sizing or shaping within the temperature spectrum of 1,000 to 1,200°F (538 to 649°C).
Machinability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, exhibits superior machinability. Employ traditional machining techniques used for austenitic stainless steels, ensuring slow speeds and high feed rates. Rely on robust tool rigidity and copious amounts of non-chlorinated cutting fluids for optimal outcomes.
Weldability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is remarkably weldable under both annealed and solution/partially aged conditions. Aging is seamlessly achieved during the post-weld heat treatment.
To prevent contamination with oxygen, nitrogen, and hydrogen, take meticulous precautions. Achieve fusion welding in an inert gas-filled chamber or employ an inert gas tail shield over molten and heated zones. Spot, seam, and flash welding can be accomplished without a protective atmosphere.
Special Considerations
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, necessitates special considerations to prevent hydrogen contamination from improper pickling. Additionally, it can absorb oxygen, nitrogen, and carbon during forging, heat treating, and brazing, which may compromise its ductility and impact notch sensitivity and formability. Handle with care to maintain its exceptional properties.
Audited Supplier 
){kind=link}