Daxun Alloy's pure titanium Grade 1 titanium tubes include:
Our seamless and welded titanium tubes boast exceptional ductility and cold formability, perfect for deep drawing applications. Grade 1 titanium tubes are renowned for their superior general and seawater corrosion resistance, as well as their outstanding resistance to oxidizing, neutral, and slightly reducing media (including chlorides).
With a low density-approximately half that of nickel-based alloys-combined with high strength and corrosion resistance, titanium proves to be an ideal choice for extreme chemical environments. Adhering to the following standards: 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 regarded as the titanium tube of choice for industrial applications, it offers an excellent balance of moderate strength and ductility. Its remarkable resistance to corrosion in both highly oxidizing and slightly reducing environments (including chlorides) makes it indispensable in the chemical and offshore industries, as well as for aircraft manufacturing where strength and formability are critical. Additional applications include heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and pipes.
Fabrication
Titanium Grade 2 is highly responsive to cold forming with conventional methods. It can be machined with ease, provided sharp tools are maintained and ample coolant is used. Similar to machining austenitic stainless steels, deep, continuous cuts with slow feeds and speeds are essential.
Stock Availability
Daxun Alloys maintains a robust inventory of CP 2 Grade Titanium Seamless and Welded Pipes in a wide range of sizes.
Weight Reduction
CP 2 grade titanium tubes are characterized by their low density and high strength-to-weight ratio, making them ideal for applications requiring weight reduction without compromising strength. They are cold formable, possess excellent ductility, and can be welded using standard TIG and MIG processes, although inert gas shielding is necessary to prevent embrittlement of the weld zone.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tube exhibits an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. Around 885°C (1625°F), it transitions to a beta (body-centered cubic) structure. This transformation temperature varies with the type and quantity of impurities or alloying additions. These elements also create two 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 temperatures, both alpha and beta forms coexist. Typical transformation temperatures for Grade 2 titanium are 890°C (1635°F) and 913°C (1675°F) for alpha and beta phases, respectively.
Grade 2 Titanium Seamless Pipe Manufacturing Process
Daxun's ASTM B338 Grade 2 titanium seamless tubes are meticulously crafted from hollow blanks through hot extrusion or oblique rolling and piercing processes, followed by multiple cold rolling stages. Throughout manufacturing, titanium seamless tubes maintain continuous perimeters. The production process includes: vacuum arc melting of sponge titanium, ingot blanking to create hollow blanks, cleaning, cutting, 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, crafted from annealed flat-rolled steel plate or strip utilizing the precision of automatic arc welding (TIG) technology, stands as a paragon of quality. The intricate production processes encompass: 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 meticulous packaging. Each welded pipe undergoes at least one stress relief heat treatment post-forming and welding, ensuring robustness. Daxun guarantees excellence by not employing any filler materials 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) is acclaimed as the most sought-after titanium alloy. This duplex alpha+beta titanium composition employs aluminum as the alpha stabilizer and vanadium as the beta stabilizer, delivering remarkable strength. Capable of withstanding low temperatures around 800°F (427°C), the ATI Ti-6Al-4V, Grade 5 alloy is indispensable for annealing, solution treating, and aging processes. Its applications span across compressor blades, disks, and rings for jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and critical forgings, all demanding a high strength-to-weight ratio.
This exceptional alloy undergoes initial melting employing vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM) methods. Subsequent remelting occurs through one or two vacuum arc steps, ensuring premier quality.
Specifications
• ASME 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 Annealed at 1,700-1,900°F (927 - 1,038°C), this process is essential when high hardness, tensile strength, and fatigue strength are paramount.
DAXUN 6-4 Grade 5 Titanium Tube is versatile and can undergo various heat treatment procedures.
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 Small cross sections with rapid quenching achieve superior properties in the solution treated and aged condition. However, larger cross-section sizes or delayed quenching may result in suboptimal characteristics.
HardnessIn its annealed state, the typical hardness lies between Rockwell C 30-34, elevating to approximately Rockwell C 35-39 in the solution and aged condition.
Forgeability/Formability The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is meticulously forged at a high temperature of 1,750°F (954°C) with a concluding forging temperature of 1,450°F (788°C). For optimal results, a reduction of at least 35% is highly recommended, ensuring superior quality and performance.
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube presents challenges when forming at room temperature, even in its annealed state. Hence, intense forming operations like bending and stretching can be effectively carried out on the annealed material at elevated temperatures up to 1,200°F (649°C) without altering its mechanical properties. Additionally, creep forming is an ideal method for hot sizing or shaping at temperatures ranging from 1,000 to 1,200°F (538 to 649°C).
Machinability The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube can be precisely machined using techniques tailored for austenitic stainless steels. This includes employing slow speeds, high feeds, robust tool rigidity, and copious applications of non-chlorinated cutting fluids to achieve exceptional machining results.
Weldability The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube boasts excellent weldability in both annealed and solution and partially aged conditions, with aging
completed during post-weld heat treatment. It is imperative to take precautions to avoid contamination by oxygen, nitrogen, and hydrogen. Fusion welding can be effectively conducted within an inert gas-filled chamber or by employing an inert gas tail shield over the molten metal and nearby hot zones. Spot welding, seam welding, and flash welding can all be executed without needing a protective atmosphere.
Special Considerations The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is susceptible to contamination from hydrogen due to improper pickling, as well as from the absorption of oxygen, nitrogen, and carbon during processes such as forging, heat treating, and brazing. This contamination can diminish ductility and negatively affect notch sensitivity and formability.
