Daxun Alloy's Pure Titanium Grade 1 Tubes: The Ultimate in Corrosion Resistance
Our offering includes seamless and welded titanium tubes, renowned for their exceptional ductility and cold formability, making them perfect for deep drawing processes. Grade 1 titanium tubes are celebrated for their superb resistance to general and seawater corrosion, as well as their excellent durability in oxidizing, neutral, and slightly reducing environments (including those containing chlorides).
Titanium's exceptionally low density (approximately half that of nickel-based alloys), coupled with its high strength, light weight, and superior corrosion resistance, renders it an unparalleled choice for a multitude of challenging chemical conditions. The execution standards we adhere to include: ASTM B338 | ASTM B265 | ASME SB265 | ASTM F67 | ISO 5832-2 | 3.7025 | 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 an exemplary balance of moderate strength and reasonable ductility. Its remarkable corrosion resistance makes it invaluable in both highly oxidizing and mildly reducing conditions (including chlorides). This grade provides excellent corrosion protection and is extensively used in the chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, and various industrial and aerospace components, as well as CPI equipment and pipes.
Fabrication
Titanium Grade 2 responds superbly to cold forming using standard techniques. It is readily machinable, provided that sharp tools are maintained and liberal use of coolant is ensured. Similar to machining austenitic stainless steels, cuts should be deep and continuous, employing slow feeds and speeds for optimal results.
Stock Availability
Daxun Alloys offers an extensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in a diverse range of sizes to meet your specific requirements.
Weight Reduction
CP 2 grade titanium tubes boast low density and a high strength-to-weight ratio, making them ideal for applications where weight reduction is crucial without compromising overall strength. These tubes are easily cold formable, exhibit excellent ductility, and can be welded using standard TIG and MIG processes, although inert gas shielding is imperative to prevent embrittlement of the weld zone.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tubes possess an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. Upon reaching approximately 885°C [1625°F], they transition to a beta (body-centered cubic) structure. This transformation temperature can be modulated by the type and amount of impurities or alloying additions. These additions also divide the single equilibrium transformation temperature into two distinct zones: the alpha transformation zone, below which the alloy is entirely alpha, and the beta transformation zone, above which the alloy is all beta. Between these two temperatures, both alpha and beta forms coexist. For Grade 2 titanium, the 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 through a hot extrusion process or oblique rolling and piercing, followed by multiple cold rolling stages. Each stage of the manufacturing operation ensures seamless, continuous perimeters. The comprehensive manufacturing process includes: vacuum arc melting of sponge titanium to create ingots, blanking to obtain hollow blanks, cleaning, cutting, and feeding, followed by 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.
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. The extensive production process encompasses: 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. Each welded pipe undergoes at least one stress relief heat treatment post-forming and welding. Importantly, Daxun employs specific filler materials during the welding process to ensure superior quality.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium TubeTitanium Alloy - (UNS R56400)
Introduction
Daxun's Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400) ranks as the most popular titanium alloy, celebrated for its duplex alpha+beta structure. Utilizing aluminum as the alpha stabilizer and vanadium as the beta stabilizer, this high-strength alloy is functional at low temperatures around 800°F (427°C). The ATI Ti-6Al-4V, Grade 5 alloy is ideal for annealing, solution treating, and aging. It is extensively used in the manufacturing of compressor blades, disks, and rings for jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and critical forgings requiring a high strength-to-weight ratio.
The alloy's initial melting is performed using vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Subsequent remelting occurs through one or two vacuum arc steps.
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)
Density: 0.160 lb/in3; 4.47 g/cm3
Beta Transus Temperature: 1830°F (± 25°); 999°C (± 14°)
Heat Treatment Annealing at 1,700-1,900°F (927 - 1,038°C) achieves high hardness, tensile strength, and fatigue strength.
DAXUN 6-4 Grade 5 Titanium Tube can undergo diverse heat treatment methods.
1. Annealing: 1,275 - 1,400°F (691 - 760°C), ½ to 2 hours, air or furnace cool
2. Stress Relief Annealing: 1,000 - 1,200°F (538 - 649°C), 1 to 8 hours, air or furnace cool
3. Solution Heat Treating: 1,675 - 1,750°F (913 - 954°C), 1 hour, water quench
4. Aging: 975 - 1,025°F (524 - 552°C), 4 to 8 hours - air cool
Optimum Properties Achieving optimum properties is reliant on small cross-sections with rapid quenching in the solution treated and aged condition. Larger cross-sections and/or delayed quenching may yield suboptimal properties.
HardnessTypical hardness in the annealed state is Rockwell C 30-34, while the solution and aged state achieves approximately Rockwell C 35-39.
Forgeability/Formability Experience unparalleled performance with DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube. Expertly forged at an optimal 1,750°F (954°C) and finalized at 1,450°F (788°C), ensuring a reduction of at least 35% for superior results.
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, while challenging to form at room temperature even when annealed, excels in severe forming operations like bending or stretching at up to 1,200°F (649°C). Maintain mechanical integrity with hot sizing or forming via creep forming at temperatures between 1,000 to 1,200°F (538 to 649°C).
Machinability Unlock precision with DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube. Employ austenitic stainless steel machining techniques with slow speeds, high feeds, and robust tool rigidity. Maximize efficiency using generous amounts of non-chlorinated cutting fluids.
Weldability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube offers excellent weldability whether annealed or in solution and partially aged states, with aging achieved during post-weld heat treatment.
Ensure purity by avoiding contamination with oxygen, nitrogen, and hydrogen. Execute fusion welding in an inert gas-filled chamber or use an inert gas tail shield over molten metal and hot zones. Techniques like spot welding, seam welding, and flash welding can be performed without protective atmosphere.
Special Considerations Protect the integrity of DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube from hydrogen contamination during improper pickling, and from oxygen, nitrogen, and carbon absorption during forging, heat treating, brazing. Contamination may reduce ductility and affect notch sensitivity and formability.