Grade 2 Titanium Tube (UNS R50400 / Werkstoff WS 3.7034)
This is the most commonly used titanium tube for industrial applications, providing an exceptional balance of moderate strength and reasonable ductility. It offers outstanding corrosion resistance in both highly oxidizing and slightly reducing conditions, including chlorides. It ensures robust corrosion protection in the chemical and offshore industries, as well as aircraft manufacturing, where strength and ease of forming are essential. Furthermore, it is widely utilized in heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and pipes.
Fabrication
Titanium Grade 2 responds excellently 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. Similar to machining austenitic stainless steels, cuts should be deep and continuous with slow feeds and speeds to ensure quality.
Stock Availability
Daxun Alloys stocks CP 2 Grade Titanium Seamless and Welded Pipes in a wide variety of sizes to meet all your requirements.
Weight Reduction
CP 2 grade titanium tubes possess low density and a high strength-to-weight ratio, making them ideal for applications that require weight reduction without compromising overall strength. These tubes are cold formable, exhibit good ductility, and can be welded using conventional TIG and MIG processes, though inert gas shielding is crucial 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. Around 885°C (1625°F), it transforms into a beta (body-centered cubic) structure. This transformation temperature can vary depending on the impurities or alloying additions present. The addition of alloying elements divides the single equilibrium transformation temperature 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 temperatures, both alpha and beta forms coexist. 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 crafted from hollow blanks via the hot extrusion process or oblique rolling and piercing process, followed by multiple cold rolling stages. The seamless tubes should maintain continuous perimeters at all stages of manufacturing. The comprehensive manufacturing process involves: sponge titanium vacuum arc melting, ingot blanking to obtain 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 produced from annealed flat-rolled steel plate or steel strip using the automatic arc welding (TIG) process. The principal production stages 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. Welded pipes undergo at least one stress relief heat treatment after forming and welding. Daxun does not use any filler materials during the welding process.
Grade 2 Titanium Tube (UNS R50400 / Werkstoff WS 3.7034) Discover the exceptional qualities of our Titanium Tube Grade 2 ASTM B338, a vital choice for numerous industrial applications. This titanium tube is renowned for its superb balance of moderate strength and reasonable ductility, coupled with outstanding corrosion resistance in a wide range of environments, from highly oxidizing to slightly reducing conditions, including chlorides. Ideal for chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, CPI equipment, and pipes, it ensures superior performance and durability.
Fabrication
Titanium Grade 2 showcases excellent cold forming capabilities using standard methods, making it highly versatile. It can be readily machined with meticulous attention to maintaining sharp tools and the liberal use of coolant. Similar to machining austenitic stainless steels, achieving optimal results requires deep and continuous cuts with slow feeds and speeds.
Stock Availability
At Daxun Alloys, we maintain an extensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in a variety of sizes to meet diverse project requirements.
Weight Reduction
CP 2 Grade titanium tubes are celebrated for their low density and high strength-to-weight ratio, proving essential for applications where weight reduction is critical without compromising strength. These tubes are cold formable, exhibit excellent ductility, and can be welded using conventional TIG and MIG processes. Ensuring inert gas shielding is crucial to preventing embrittlement of the weld zone.
Crystal Structure
At ambient temperatures, ASTM B338 Grade 2 titanium tubes possess an alpha (hexagonal close-packed) crystal structure, similar to commercially pure titanium grades 1 and 3. Upon reaching around 885°C (1625°F), this structure transitions to a beta (body-centered cubic) form. This transformation temperature can vary based on the type and amount of impurities or alloying elements present. Alloying additions also create distinct 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). 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 using the hot extrusion process or oblique rolling and piercing process, followed by multiple cold rolling stages. The seamless tube manufacturing process includes sponge titanium vacuum arc melting, ingot blanking, hollow blank creation, cleaning, cutting and feeding, hot extrusion or oblique rolling and piercing, degreasing, drying, cutting, online annealing and straightening, pickling, multiple cold rolling stages, degreasing, drying, vacuum annealing, straightening, cutting, pickling, final inspection, marking (DAXUN), and packaging. Each stage ensures the seamless, continuous perimeter integrity of the titanium tubes.
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 using the advanced automatic arc welding (TIG) process. The production involves several key 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 structural integrity, welded pipes undergo at least one stress relief heat treatment after forming and welding. No filler materials are used during the welding process, adhering to top-quality standards.
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 premier choice among titanium alloys. As a duplex alpha+beta titanium alloy, it incorporates aluminum as the alpha stabilizer and vanadium for beta stabilization. This high-strength alloy is remarkably versatile, maintaining performance at temperatures as low as 800°F (427°C). ATI Ti-6Al-4V, Grade 5 is ideally suited for annealing, solution treating, and aging processes. Its applications are extensive and include compressor blades, disks, and rings for jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and critical forgings demanding a superior strength-to-weight ratio.
The alloy's initial melting is conducted through advanced techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Subsequent remelting is executed in one or two vacuum arc steps, ensuring the highest purity and consistency.
Specifications
• ASTE B338 - Standard for Heat Treatable Titanium Tubes
• AMS 4928 - Standards for Forgings and Forging Stock (Annealed)
• AMS 4965 - Standards for Forgings (Solution Treated and Aged)
• AMS 4967 - Standards for 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 robust performance across varied applications.
Density stands at 0.160 lb/in³ (4.47 g/cm³), contributing to its lightweight strength.
Beta Transus Temperature is precisely 1830°F (± 25°); 999°C (± 14°), ensuring superior phase transformation characteristics.
Heat Treatment For applications requiring high hardness, tensile strength, and fatigue resistance, the alloy is annealed at 1,700-1,900°F (927 - 1,038°C).
DAXUN 6-4 Grade 5 Titanium Tube offers diverse heat treatment methods for tailored performance.
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: Performed at 1,000 - 1,200°F (538 - 649°C) for 1 to 8 hours, with air or furnace cooling.
3. Solution Heat Treating: Applied at 1,675 - 1,750°F (913 - 954°C) for 1 hour, followed by water quenching for optimal results.
4. Aging: Implemented at 975 - 1,025°F (524 - 552°C) for 4 to 8 hours, with air cooling to achieve desired properties.
Optimum Properties Achieving optimum properties requires rapid quenching of small cross sections in the solution treated and aged condition. Larger cross sections or delayed quenching may result in suboptimal characteristics.
HardnessIn the annealed state, typical hardness ranges from Rockwell C 30-34, whereas in the solution and aged condition, it ranges approximately from Rockwell C 35-39.
Forgeability/Formability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 is forged at an initial temperature of 1,750°F (954°C) with a final forging temperature of 1,450°F (788°C). A minimum reduction of 35% is recommended to achieve the best results in terms of performance and durability.
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is notoriously challenging to form at room temperature, even post-annealing. However, advanced forming techniques such as bending or stretching can be executed on the annealed material at elevated temperatures of up to 1,200°F (649°C) without compromising its mechanical integrity. For precise hot sizing or forming, creep forming is optimal at temperatures ranging between 1,000 and 1,200°F (538 to 649°C).
Machinability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube can be precisely machined using methodologies comparable to those for austenitic stainless steels. Employ slow speeds, high feeds, robust tool rigidity, and ample quantities of non-chlorinated cutting fluids to achieve superior machining results.
Weldability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube exhibits outstanding weldability in both the annealed state and the solution and partially aged conditions, with aging.
completed during post-weld heat treatment. Meticulous precautions are essential to prevent contamination from oxygen, nitrogen, and hydrogen. Fusion welding is best performed in an inert gas-filled chamber or with an inert gas tail shield covering the molten metal and surrounding hot zones. Additionally, spot welding, seam welding, and flash welding can be conducted without the necessity of a protective atmosphere.
Special Considerations DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is susceptible to contamination by hydrogen from improper pickling and by the absorption of oxygen, nitrogen, and carbon during processes like forging, heat treating, and brazing. This contamination could detrimentally impact ductility, notch sensitivity, and formability.
