Grade 2 Titanium Tube (UNS R50400 / Werkstoff WS 3.7034)
This is the most frequently used titanium tube for industrial applications, offering a perfect balance of moderate strength and ductility. It excels in corrosion resistance, suitable for both highly oxidizing and mildly reducing environments, including chlorides. Its application spectrum spans the chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and pipes.
Fabrication
Titanium Grade 2 adapts seamlessly to cold forming through standard methods. It is readily machinable, although maintaining sharp tools and using liberal coolant is crucial. As with austenitic stainless steels, cuts should be deep and continuous, with slow feeds and speeds to ensure precision.
Stock Availability
Daxun Alloys maintains an extensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes.
Weight Reduction
CP 2 grade titanium tubes, characterized by low density and a high strength-to-weight ratio, are ideal for applications demanding weight reduction without compromising strength. They are easily cold formable, exhibit good ductility, and can be welded using conventional TIG and MIG processes, provided inert gas shielding is applied to prevent embrittlement of the weld zone.
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. It transforms to a beta (body-centered cubic) structure at approximately 885°C (1625°F). This transformation temperature can vary based on the type and amount of impurities or alloy additions. The addition of alloying elements modifies 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 coexist. 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 crafted from hollow blanks using hot extrusion or oblique rolling and piercing processes, followed by multiple cold rolling processes. Ensuring continuous perimeters at all stages, the manufacturing involves: sponge titanium vacuum arc melting, ingot blanking to obtain 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 produced from annealed flat-rolled steel plate or strip using the automatic arc welding (TIG) process. Key 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. Welded pipes undergo stress relief heat treatment post forming and welding, ensuring optimal performance. Daxun does not use any filler materials during welding.
Grade 2 Titanium Tube (UNS R50400 / Werkstoff WS 3.7034) This is the most frequently utilized titanium tube for diverse industrial applications, striking an extraordinary balance between moderate strength and exceptional ductility. It boasts unparalleled corrosion resistance in both highly oxidizing and mildly reducing environments (including chloride-rich conditions). This makes it an ideal material for chemical and offshore industries, as well as in aircraft manufacturing, where both strength and formability are paramount. Additionally, it is extensively used in heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and piping systems.
Fabrication
Titanium Grade 2 exhibits excellent responsiveness to cold forming using conventional methods. It can be machined with ease, provided that sharp tools and an ample supply of coolant are maintained. Similar to machining austenitic stainless steels, deep and continuous cuts with slow feeds and speeds are recommended to achieve optimal results.
Stock Availability
Daxun Alloys maintains an extensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in a variety of sizes, ensuring prompt availability for your immediate needs.
Weight Reduction
CP 2 grade titanium tubes are distinguished by their low density and remarkably high strength-to-weight ratio, making them perfect for applications demanding weight reduction without compromising strength. They are highly formable, exhibit good ductility, and are weldable using conventional TIG and MIG processes. However, proper inert gas shielding is essential to prevent weld zone embrittlement.
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 undergoes a transformation to a beta (body-centered cubic) structure. The transformation temperature can vary based on the type and quantity of impurities or alloying elements. The incorporation of alloying elements divides the single equilibrium transformation temperature into two distinct zones: the alpha transformation zone (below which the alloy remains all alpha) and the beta transformation zone (above which the alloy is all beta). Between these two temperatures, both alpha and beta forms coexist. 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 through a hot extrusion process or an oblique rolling and piercing process, followed by multiple cold rolling stages. The seamless tubes must maintain continuous perimeters throughout the manufacturing stages. The comprehensive manufacturing process 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 fabricated from annealed flat-rolled steel plate or steel strip using an automatic arc welding (TIG) process. The main 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-forming and welding, welded pipes undergo at least one stress relief heat treatment. Daxun ensures no filler materials are used during 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) stands as the most sought-after titanium alloy, admired for its duplex alpha+beta composition enriched with aluminum as the alpha stabilizer and vanadium as the beta stabilizer. This high-strength alloy endures temperatures as low as 800°F (427°C). With a diverse range of applications, ATI Ti-6Al-4V, Grade 5 alloy excels in annealing, solution treating, and aging processes. It is extensively used in manufacturing compressor blades, disks, and rings for jet engines, fuselage and space capsule components, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and critical forgings where a high strength-to-weight ratio is essential.
The alloy's production begins with initial melting using vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM), followed by remelting in one or two vacuum arc steps to ensure superior quality.
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 PropertiesTi-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 Annealing is performed at 1,700-1,900°F (927 - 1,038°C) for enhanced hardness, tensile strength, and fatigue strength.
DAXUN 6-4 Grade 5 Titanium Tube can undergo diverse heat treatments to achieve various properties.
1. Annealing: 1,275 -1,400°F (691 - 760°C), maintained for ½ to 2 hours, followed by air or furnace cooling.
2. Stress Relief Annealing: 1,000 -1,200°F (538 - 649°C), maintained for 1 to 8 hours, followed by air or furnace cooling.
3. Solution Heat Treating: 1,675 -1,750°F (913 - 954°C) for 1 hour, then water quenched.
4. Aging: 975 -1,025°F (524 - 552°C) for 4 to 8 hours, then air cooled.
Optimum Properties Achieving optimum properties involves rapid quenching for small cross sections in the solution treated and aged condition. Larger cross-section sizes or delayed quenching may result in suboptimal properties.
HardnessThe typical hardness is Rockwell C 30-34 in the annealed condition and 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 ideally forged at 1,750°F (954°C) with a final forging temperature of 1,450°F (788°C), and a reduction of at least 35% is recommended for optimal results.
Although DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is challenging to form at room temperature, even when annealed, severe forming operations such as bending or stretching can be executed on annealed material at temperatures up to 1,200°F (649°C) without altering its mechanical properties. Creep forming is suitable for hot sizing or forming at temperatures from 1,000 to 1,200°F (538 to 649°C).
Outstanding Machinability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, exhibits excellent machinability akin to austenitic stainless steels. Employing slow speeds, high feeds, robust tool rigidity, and generous amounts of non-chlorinated cutting fluids ensures optimal performance.
Exceptional Weldability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, offers superior weldability in both annealed and solution-aged conditions. It's particularly adept at retaining strength post-aging.
accomplished during post-weld heat treatment. To maintain integrity, avoid contamination from oxygen, nitrogen, and hydrogen. Fusion welding can be efficiently performed in an inert gas-filled chamber or with an inert gas tail shield over the molten metal and adjacent hot zones. Additionally, spot welding, seam welding, and flash welding are feasible without a protective atmosphere.
Critical Special Considerations DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, must be protected from hydrogen contamination due to improper pickling or absorption of oxygen, nitrogen, and carbon during forging, heat treating, brazing, and similar processes. Such contamination can compromise ductility, notch sensitivity, and formability.
