Grade 2 Titanium Tube (UNS R50400 / Werkstoff WS 3.7034)
Discover the most frequently utilized titanium tube for industrial applications - the Grade 2 Titanium Seamless Tube. This exceptional tube strikes a perfect balance between moderate strength and remarkable ductility. Its superior corrosion resistance shines in both highly oxidizing and mildly reducing conditions, including exposure to chlorides. Ideal for the chemical and offshore industries, aircraft manufacturing, heat exchangers, and more, this tube excels where both strength and formability are paramount. It's also trusted in hypochlorite systems, fire water systems, ballast water systems, CPI equipment, and aerospace components.
Fabrication
Titanium Grade 2 is highly responsive to cold forming using standard techniques. The material machines well, provided that sharp tools are maintained, and coolant is used generously. Much like machining austenitic stainless steels, the machining process should feature deep, continuous cuts at slow feed rates and speeds.
Stock Availability
Daxun Alloys proudly stocks a wide range of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes to meet diverse needs.
Weight Reduction
Grade 2 titanium tubes from Daxun Alloys boast a low density and a superior strength-to-weight ratio, making them perfect for weight-sensitive applications that demand uncompromised strength. Cold formable and boasting good ductility, these tubes can be welded using conventional TIG and MIG processes, provided inert gas shielding is employed to prevent weld zone embrittlement.
Crystal Structure
At room temperature, the ASTM B338 Grade 2 titanium tube embodies an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. Upon reaching around 885°C (1625°F), it transitions to a beta (body-centered cubic) structure. This transformation temperature can be adjusted based on impurities or alloying additions. Alloying elements further bifurcate the transformation temperature into two zones: the alpha transformation zone and the beta transformation zone, with both alpha and beta forms coexisting between these temperatures. Typical transformation temperatures for Grade 2 Titanium are 890°C (1635°F) for alpha and 913°C (1675°F) for beta.
Grade 2 Titanium Seamless Pipe Manufacturing Process
Daxun's ASTM B338 Grade 2 titanium seamless tubes are meticulously crafted from hollow blanks through a hot extrusion process or oblique rolling and piercing, followed by multiple cold rolling procedures. Ensuring continuous perimeters during each manufacturing stage, the process includes sponge titanium vacuum arc melting, ingot blanking, hot extrusion or rolling, degreasing, drying, cutting, annealing, pickling, cold rolling, straightening, and thorough final inspection, marking, and packaging under the DAXUN brand.
Grade 2 Titanium Welded Pipe Manufacturing Process
Daxun's ASTM B338 Grade 2 titanium welded pipes are manufactured from annealed flat-rolled steel plate or strip via an automatic arc welding (TIG) process. The production stages encompass uncoiling, shearing, butt welding, cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing, annealing, precision reducing, sizing, straightening, ultrasonic and hydrostatic testing, final inspection, and packaging. Stress relief heat treatment post-welding is mandatory. No filler materials are used during the welding process.
Grade 2 Titanium Tube (UNS R50400 / Werkstoff WS 3.7034) This titanium tube stands as the premier choice for diverse industrial applications, marrying moderate strength with optimal ductility. Crafted for excellence, it delivers unparalleled corrosion resistance in both highly oxidizing and mildly reducing environments, including chloride exposure. Its remarkable resilience makes it indispensable in the chemical and offshore industries, as well as in aircraft manufacturing, where both strength and formability are paramount. Moreover, it is a critical component in heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace parts, CPI equipment, and piping solutions.
Fabrication
Titanium Grade 2 exhibits exceptional responsiveness to cold forming through conventional methods. While easily machinable, it demands meticulous attention to tool sharpness and abundant coolant usage. Similar to austenitic stainless steel machining, the process should involve deep, continuous cuts with slow feeds and speeds to ensure precision and efficiency.
Stock Availability
Daxun Alloys maintains a comprehensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in multiple sizes, ready to meet diverse project requirements.
Weight Reduction
The CP 2 grade titanium tubes are renowned for their low density and high strength-to-weight ratio, perfect for applications necessitating weight reduction without compromising strength. These tubes are cold formable, exhibit excellent ductility, and can be welded using standard TIG and MIG processes, with inert gas shielding essential to avoid weld zone embrittlement.
Crystal Structure
At ambient temperatures, the ASTM B338 Grade 2 titanium tube possesses an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. As the temperature ascends to approximately 885°C (1625°F), it transitions to a beta (body-centered cubic) structure. This transformation threshold can shift based on impurities or alloy additions, which also bifurcate the single equilibrium transformation temperature into two distinct zones: the alpha transformation zone (below which the alloy is purely alpha) and the beta transformation zone (above which the alloy is purely beta). Between these zones, both alpha and beta forms coexist. For Grade 2 titanium, typical alpha and beta transformation temperatures 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 successive cold rolling stages. Throughout the manufacturing process, the tubes maintain continuous perimeters. Our comprehensive production sequence includes: sponge titanium vacuum arc melting, ingot blanking for 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 pipes are expertly manufactured from annealed flat-rolled steel plate or strip using the automatic arc welding (TIG) process. The meticulous production steps include: 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, welded pipes undergo at least one stress relief heat treatment. Daxun incorporates filler materials during the welding process to ensure superior integrity.
Ti-6Al-4V Titanium Pipe- Grade 5 Titanium TubeTitanium Alloy - (UNS R56400)
Introduction
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400) stands as the most popular titanium alloy, renowned for its exceptional versatility. As a duplex alpha+beta titanium alloy, it leverages aluminum as the alpha stabilizer and vanadium as the beta stabilizer. This high-strength alloy performs excellently at low temperatures, around 800°F (427°C). The ATI Ti-6Al-4V, Grade 5 alloy is ideal for annealing, solution treating, and aging processes. Its applications are vast, including 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 a high strength-to-weight ratio.
This alloy undergoes initial melting through advanced techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). The remelting process is conducted in one or two vacuum arc steps, ensuring top-tier quality and consistency.
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 Melting Range: 2,800-3,000°F (1,538 - 1,649°C), offering superior heat resistance.
Density: 0.160 lb/in³; 4.47 g/cm³, providing a lightweight yet robust material.
Beta Transus Temperature: 1830°F (± 25°); 999°C (± 14°), critical for phase transformation.
Heat Treatment For high hardness, tensile strength, and fatigue strength, anneal at 1,700-1,900°F (927 - 1,038°C).
The DAXUN 6-4 Grade 5 Titanium Tube can undergo various heat treatment methods to tailor its properties.
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, then air cooling.
Optimum Properties Achieve optimal properties with small cross-sections and rapid quenching in the solution treated and aged condition. Larger cross-sections or delayed quenching may yield suboptimal properties.
HardnessIn the annealed condition, typical hardness is Rockwell C 30-34. In the solution and aged condition, it ranges approximately from Rockwell C 35-39.
Forgeability/Formability For DAXUN Ti-6Al-4V Titanium Tube, Grade 5, forging is best performed at 1,750°F (954°C) with a final forging temperature of 1,450°F (788°C). A reduction of at least 35% is recommended for optimal results.
Forming DAXUN Ti-6Al-4V Titanium Tube, Grade 5 at room temperature is challenging, even when annealed. Severe forming operations like bending or stretching are best performed on annealed material at up to 1,200°F (649°C) without altering mechanical properties. Creep forming is suitable for hot sizing or forming at 1,000 to 1,200°F (538 to 649°C).
Machinability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube offers exceptional machinability akin to austenitic stainless steels. Employ slow speeds, high feeds, robust tool rigidity, and copious amounts of non-chlorinated cutting fluids to achieve optimal results.
Weldability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube exhibits excellent weldability in both annealed and solution-aged conditions. The aging process can be seamlessly integrated during post-weld heat treatment.
Aging is effectively achieved during post-weld heat treatment. Care must be taken to prevent contamination by oxygen, nitrogen, and hydrogen. Execute fusion welding in an inert gas-filled chamber or utilize an inert gas tail shield over the molten metal and adjacent hot zones. Techniques such as spot welding, seam welding, and flash welding can be performed without a protective atmosphere.
Special Considerations DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube may face contamination risks from hydrogen during improper pickling and absorption of oxygen, nitrogen, and carbon during processes like forging, heat treating, and brazing. Such contamination can detrimentally impact ductility, notch sensitivity, and formability.
