Grade 2 Titanium Tube (UNS R50400 / Werkstoff WS 3.7034)
This is the premier choice for titanium tubes in industrial applications, effortlessly balancing moderate strength and exceptional ductility. It boasts stellar corrosion resistance in both highly oxidizing and mildly reducing environments, including chlorides. This makes it indispensable in the chemical and offshore industries, as well as in aerospace manufacturing, where durability and formability are paramount. Its applications extend to heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and piping.
Fabrication
Titanium Grade 2 is highly receptive to cold forming using conventional methods. It can be readily machined with the stipulation of maintaining sharp tools and the liberal application of coolants. Similar to machining austenitic stainless steels, deep and continuous cuts with slow feeds and speeds are recommended for optimal results.
Stock Availability
Daxun Alloys maintains an extensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes to meet diverse specifications.
Weight Reduction
CP 2 grade titanium tubes offer a remarkable low-density and high strength-to-weight ratio, making them ideal for applications where reducing weight is crucial without compromising strength. These tubes are cold formable, exhibit excellent ductility, and can be welded using standard TIG and MIG processes, though inert gas shielding is required to prevent the weld zone from becoming brittle.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tube features an alpha (hexagonal close-packed) crystal structure, similar to commercially pure titanium grades 1 and 3. At approximately 885°C (1625°F), it transitions to a beta (body-centered cubic) structure. The transformation temperature can vary based on the type and amount of impurities or alloying additions. Alloying elements can split the single temperature of the equilibrium transformation into two distinct temperature zones: the alpha transformation zone (below which the alloy is entirely alpha) and the beta transformation zone (above which it 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) 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 or oblique rolling and piercing process, followed by multiple cold rolling operations. Ensuring seamless perimeters throughout all manufacturing stages, the comprehensive production includes: 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 manufactured using annealed flat-rolled steel plate or strip through an automatic arc welding (TIG) process. The comprehensive 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 post-forming and welding. Daxun ensures no filler materials are employed during the welding process.
Grade 2 Titanium Tube (UNS R50400 / Werkstoff WS 3.7034) This is the quintessential choice for industrial-grade titanium tubes, delivering an exceptional blend of moderate strength and commendable ductility. It boasts outstanding corrosion resistance in both highly oxidizing and mildly reducing environments, including chlorides. This makes it ideal for the chemical and offshore industries, as well as aircraft manufacturing, where its strength and ease of forming are paramount. Additionally, it finds extensive application in heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and piping solutions.
Fabrication
Titanium Grade 2 excels in cold forming using standard techniques. It is easily machinable; however, it is crucial to use sharp tools and abundant coolant. Similar to machining austenitic stainless steels, deep and continuous cuts with slow feeds and speeds are recommended to achieve optimal results.
Stock Availability
At Daxun Alloys, we maintain a comprehensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes, available in a wide range of sizes to meet various industrial needs.
Weight Reduction
CP 2 grade titanium tubes are renowned for their low density and remarkable strength-to-weight ratio, making them perfect for applications requiring weight reduction without compromising strength. These tubes are cold formable, exhibit excellent ductility, and can be welded using conventional TIG and MIG methods. However, inert gas shielding is essential to prevent weld zone embrittlement.
Crystal Structure
At ambient temperatures, ASTM B338 Grade 2 titanium tubes possess an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. Around 885°C (1625°F), they transition to a beta (body-centered cubic) structure. This transformation temperature may vary based on the type and amount of impurities or alloying elements. The inclusion of alloying elements also creates distinct alpha and beta transformation zones, with typical temperatures of 890°C (1635°F) and 913°C (1675°F) respectively 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 via hot extrusion or oblique rolling and piercing processes, followed by multiple cold rolling stages. These tubes maintain continuous perimeters throughout the manufacturing phases. The comprehensive production process includes: melting sponge titanium in a vacuum arc, preparing hollow blanks, cleaning, cutting, hot extrusion or oblique rolling and piercing, degreasing, drying, cutting, online annealing, pickling, multiple cold rolling, vacuum annealing, straightening, final pickling, inspection, marking, and premium packaging.
Grade 2 Titanium Welded Pipe Manufacturing Process
Daxun's ASTM B338 Grade 2 titanium welded pipes are skillfully manufactured from annealed flat-rolled steel plate or strip utilizing an automatic arc welding (TIG) process. The primary production steps include: uncoiling and shearing the titanium plate, butt welding, cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing, annealing, precision reducing and sizing, straightening, caliper testing, marking, cutting, ultrasonic and hydrostatic testing, final inspection, and secure packaging. Post-forming and welding, the pipes undergo stress relief heat treatment to ensure optimal performance. Notably, Daxun does not employ any filler materials in the welding process.
Ti-6Al-4V Titanium Pipe- Grade 5 Titanium TubeTitanium Alloy - (UNS R56400)
Introduction
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400), represents the pinnacle of titanium alloy innovation. As a duplex alpha+beta titanium alloy, it utilizes aluminum as the alpha stabilizer and vanadium as the beta stabilizer. This high-strength, versatile alloy performs exceptionally well at low temperatures, sustaining functionality up to 800°F (427°C). Renowned for its adaptability, ATI Ti-6Al-4V, Grade 5, is employed in a myriad of applications including annealing, solution treating, and aging. It is the material of choice for critical components such as compressor blades, disks, and rings for jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and high-strength-to-weight ratio forgings.
The alloy is initially subjected to sophisticated melting techniques including vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Subsequent remelting is performed through one or two steps of vacuum arc remelting to ensure utmost purity and uniformity.
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 PropertiesThe Ti-6Al-4V Titanium Tube boasts a remarkable melting range of 2,800-3,000°F (1,538 - 1,649°C), making it suitable for demanding applications.
Density: 0.160 lb/in3; 4.47 g/cm3
Beta Transus Temperature: 1830°F (± 25°); 999°C (± 14°)
Heat Treatment For high hardness, tensile strength, and fatigue strength, the alloy is annealed at 1,700-1,900°F (927 - 1,038°C).
DAXUN 6-4 Grade 5 Titanium Tube offers versatile heat treatment options to cater to various requirements.
1. Annealing: Performed 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, with air or furnace cooling.
3. Solution Heat Treating: Conducted at 1,675 -1,750°F (913 - 954°C) for 1 hour, followed by water quenching.
4. Aging: Carried out at 975 -1,025°F (524 - 552°C) for 4 to 8 hours, with air cooling.
Optimum Properties Achieve optimal properties with small cross sections and rapid quenching in the solution treated and aged condition. Note that larger cross-section sizes or delayed quenching may lead to less than optimal properties.
HardnessTypically, the hardness in the annealed condition is Rockwell C 30-34, escalating to approximately Rockwell C 35-39 in the solution and aged condition.
Forgeability/Formability DAXUN Ti-6Al-4V Titanium Tube, Grade 5, showcases excellent forgeability at 1,750°F (954°C), with a final forging temperature of 1,450°F (788°C). Achieving a reduction of at least 35% is recommended for optimal results.
Despite its challenging formability at room temperature, even when annealed, DAXUN Ti-6Al-4V Titanium Tube can undergo severe forming operations such as bending or stretching at elevated temperatures up to 1,200°F (649°C) without compromising its mechanical properties. Additionally, creep forming is viable for hot sizing or forming at temperatures ranging from 1,000 to 1,200°F (538 to 649°C).
Machinability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube can be expertly machined using techniques common to austenitic stainless steels. Ensure slower speeds, higher feeds, robust tool rigidity, and the generous application of non-chlorinated cutting fluids for optimal results.
Weldability DAXUN Ti-6Al-4V Titanium Tube Grade 5 Titanium Tube exhibits excellent weldability whether in the annealed state or partially aged conditions. Welding is seamlessly integrated with the aging process.
This aging is performed during post-weld heat treatment. It is crucial to prevent contamination by oxygen, nitrogen, and hydrogen. Fusion welding can be conducted within an inert gas-filled chamber or by using an inert gas tail shield over the molten metal and adjacent hot zones. Protective atmospheres are not necessary for spot welding, seam welding, and flash welding operations.
Special Considerations DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube must be protected from hydrogen contamination stemming from improper pickling, as well as the absorption of oxygen, nitrogen, and carbon during processes such as forging, heat treating, and brazing. Such contamination can diminish ductility and adversely affect notch sensitivity and formability.
