Daxun Alloy's pure titanium Grade 1 titanium tubes include:
seamless titanium tubes and welded titanium tubes, which boast exceptional ductility and cold formability, making them perfect for deep drawing applications. Renowned for their outstanding general and seawater corrosion resistance, these Grade 1 titanium tubes also exhibit superior resistance to oxidizing, neutral, and slightly reducing media (solutions) including chlorides.
With its low density (around half that of nickel-based alloys), high strength, light weight, and unparalleled corrosion resistance, titanium is the material of choice for various challenging chemical environments. Compliance standards 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)
This highly utilized titanium tube in industrial applications offers an exquisite balance of moderate strength and commendable ductility. It ensures excellent corrosion resistance under both highly oxidizing and slightly reducing conditions (including chlorides). Ideal for the chemical and offshore industries, as well as aircraft manufacturing, where durability and formability are crucial. Its versatility extends to heat exchangers, hypochlorite systems, fire and ballast water systems, industrial and aerospace components, CPI equipment, and piping.
Fabrication
Titanium Grade 2 is highly responsive to cold forming using standard methods. Machining is straightforward, provided that sharp tools are maintained and a liberal use of coolant is ensured. Similar to austenitic stainless steels, cuts should be deep and continuous with slow feeds and speeds.
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 are characterized by their low density and exceptional strength-to-weight ratio, making them ideal for applications where reducing weight is crucial without compromising strength. These tubes are cold formable, exhibit good ductility, and can be welded using standard TIG and MIG processes, with inert gas shielding necessary to prevent embrittlement in the weld zone.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tube exhibits 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 be modified by the type and amount of impurities or alloying additions. Alloying elements divide the single temperature of equilibrium transformation 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 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 undergo a rigorous manufacturing process, starting with hollow blanks formed via hot extrusion or oblique rolling and piercing, followed by multiple cold rolling stages. The process ensures continuous perimeters at all stages. The comprehensive manufacturing steps include: sponge titanium vacuum arc melting, ingot blanking, hollow blank 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 represents the pinnacle of precision engineering and robust construction. Fabricated from annealed flat-rolled steel plate or steel strip, these pipes are crafted through an advanced automatic arc welding (TIG) process. The comprehensive production phases include: titanium plate uncoiling, shearing, butt welding, cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing, annealing, precision reducing and sizing, straightening, a second eddy current testing, caliper marking, cutting, ultrasonic testing, hydrostatic testing, final inspection, and packaging. To ensure superior performance and durability, all welded pipes undergo at least one stress relief heat treatment post-formation and welding. Notably, Daxun employs filler materials during the welding process to achieve unmatched consistency and quality.
Ti-6Al-4V Titanium Pipe - Premium Grade 5 Titanium TubeTitanium Alloy - (UNS R56400), a Benchmark in Advanced Materials
Introduction
The DAXUN Ti-6Al-4V Titanium Tube, acclaimed as Grade 5 (UNS R56400), stands as the epitome of titanium alloy innovation. This duplex alpha+beta titanium alloy ingeniously employs aluminum as the alpha stabilizer and vanadium as the beta stabilizer. Renowned for its high-strength properties, this alloy performs exceptionally well at temperatures as low as about 800°F (427°C). ATI Ti-6Al-4V, Grade 5 alloy is pivotal in applications involving annealing, solution treating, and aging. It is integral to the manufacture of compressor blades, disks, rings for jet engines, fuselage and space capsule components, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and crucial forgings-all demanding a high strength-to-weight ratio.
This exceptional alloy commences its journey with initial melting via vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). The remelting process is meticulously carried out in one or two vacuum arc steps, ensuring unparalleled purity and consistency.
Specifications
• ASTM B338 - The Definitive Standard for Heat Treatable Titanium Tubes
• AMS 4928 - Superior Forgings and Forging Stock (Annealed)
• AMS 4965 - Advanced Forgings (Solution Treated and Aged)
• AMS 4967 - Forgings (Heat Treatable and Annealed)
Physical PropertiesTi-6Al-4V Titanium Tube showcases an impressive melting range of 2,800-3,000°F (1,538 - 1,649°C), reflecting its robust thermal stability.
Density: A lightweight but strong material, with a density of 0.160 lb/in3; 4.47 g/cm3.
Beta Transus Temperature: 1830°F (± 25°); 999°C (± 14°) - a key metric in material performance.
Heat Treatment For applications requiring elevated hardness, tensile, and fatigue strength, DAXUN 6-4 Grade 5 Titanium Tube undergoes annealing at temperatures of 1,700-1,900°F (927 - 1,038°C).
The versatile DAXUN 6-4 Grade 5 Titanium Tube can be tailored through various heat treatment methods.
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: Executed at 1,000 -1,200°F (538 - 649°C) for 1 to 8 hours, then air or furnace cooled.
3. Solution Heat Treating: Performed 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 thereafter.
Optimum Properties In the solution-treated and aged condition, small cross-sections rapidly quenched achieve optimal properties. Conversely, larger cross-section sizes or delays in quenching can lead to slightly diminished performance.
HardnessThe typical hardness of DAXUN Ti-6Al-4V Titanium Tube in its annealed state is Rockwell C 30-34, which increases to approximately Rockwell C 35-39 when solution-treated and aged, emphasizing its exceptional durability and strength.
Forgeability/Formability The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, stands as a marvel of metallurgical engineering. With forging temperatures reaching up to 1,750°F (954°C) and a final forging touch at 1,450°F (788°C), this tube demands a reduction of at least 35% to achieve optimal performance.
Recognized for its formidable strength, the DAXUN Ti-6Al-4V Titanium Tube, Grade 5, presents challenges in forming at room temperature-even when annealed. However, it excels in severe forming operations like bending and stretching at elevated temperatures up to 1,200°F (649°C) without compromising its mechanical integrity. Creep forming, a specialized technique, allows for hot sizing and forming at temperatures spanning 1,000 to 1,200°F (538 to 649°C).
Machinability The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, can be expertly machined using techniques similar to those for austenitic stainless steels. Employing slow speeds, high feeds, robust tool rigidity, and abundant non-chlorinated cutting fluids ensures precision and excellence in machining.
Weldability Eminently weldable, the DAXUN Ti-6Al-4V Titanium Tube, Grade 5, performs admirably in both annealed and solution-treated, partially aged states.
Post-weld heat treatment enables aging, but meticulous precautions are essential to prevent contamination from oxygen, nitrogen, and hydrogen. Fusion welding is best conducted in an inert gas-filled chamber or with an inert gas tail shield over the molten metal and adjacent hot zones. Techniques such as spot welding, seam welding, and flash welding can also be executed sans protective atmosphere.
Special Considerations The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is susceptible to hydrogen contamination from improper pickling, and the absorption of oxygen, nitrogen, and carbon during processes such as forging, heat treating, and brazing. This can diminish ductility and adversely impact notch sensitivity and formability.
