Daxun Alloy's Pure Titanium Grade 1 Tubes Include:
Our seamless and welded titanium tubes stand out for their exceptional ductility and cold formability, making them perfect for deep drawing applications. Grade 1 titanium tubes are celebrated for their superior general and seawater corrosion resistance. They also offer excellent resistance to oxidizing, neutral, and slightly reducing media, including chlorides.
Thanks to titanium's low density-about half that of nickel-based alloys-combined with its high strength, light weight, and impressive corrosion resistance, it is an unrivaled choice for a range of demanding chemical environments. We adhere to the highest 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)
Often the go-to for industrial applications, Grade 2 titanium tubing strikes a superb balance between moderate strength and reasonable ductility. It excels in both highly oxidizing and slightly reducing conditions (including chlorides). Widely used in chemical and offshore industries, as well as aircraft manufacturing, it meets the highest standards of strength and formability. It is also a key component in heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, and CPI equipment.
Fabrication
Titanium Grade 2 responds exceptionally well to cold forming using standard methods. While it can be readily machined, special care must be taken to maintain sharp tools and ensure liberal use of coolant. As with austenitic stainless steels, deep, continuous cuts with slow feeds and speeds are recommended.
Stock Availability
Daxun Alloys stocks CP 2 Grade Titanium Seamless and Welded Pipes in various sizes to meet diverse application needs.
Weight Reduction
CP 2 grade titanium tubes boast a low density and high strength-to-weight ratio, making them ideal for applications demanding weight reduction without compromising strength. They are easily cold formable and exhibit good ductility. Welding can be performed using conventional TIG and MIG methods, though inert gas shielding is essential to prevent embrittlement in the weld zone.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tubes exhibit an alpha (hexagonal close-packed) crystal structure, similar to commercially pure titanium grades 1 and 3. At approximately 885°C (1625°F), this transforms into a beta (body-centered cubic) structure. The transformation temperature can be modified by the type and amount of impurities or alloying elements. Alloying elements also divide the single equilibrium transformation temperature into two zones: the alpha transformation zone (all alpha) and the beta transformation zone (all beta). Between these zones, 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 via hot extrusion or oblique rolling and piercing processes, followed by multiple cold rolling stages. The seamless tubes maintain continuous perimeters throughout the manufacturing stages. The process includes: sponge titanium vacuum arc melting, ingot blanking to get 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 pipe is crafted from premium annealed flat-rolled steel plates or steel strips, utilizing a state-of-the-art automatic arc welding (TIG) process. The comprehensive production steps include: titanium plate uncoiling, precise shearing, butt welding, meticulous cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing, annealing, precision reducing and sizing, straightening, another round of eddy current testing, caliper marking, accurate cutting, ultrasonic testing, hydrostatic testing, thorough final inspection, and packaging. To ensure impeccable quality, welded pipes undergo at least one stress relief heat treatment post-forming and welding. Notably, Daxun guarantees that no filler materials are used during the welding process.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium Tube
Titanium Alloy - (UNS R56400)
Introduction
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400), stands as the epitome of excellence in titanium alloys. This duplex alpha+beta titanium alloy is masterfully crafted using aluminum as the alpha stabilizer and vanadium as the beta stabilizer. Known for its high strength, this remarkable alloy can perform at low temperatures of approximately 800°F (427°C). ATI Ti-6Al-4V, Grade 5 alloy is meticulously engineered for annealing, solution treating, and aging. Its versatile applications include compressor blades, disks, and rings for jet engines, fuselage and space capsule components, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and critical forgings, all boasting a superior strength-to-weight ratio.
Initially, the alloy is meticulously melted using advanced techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). This process is followed by one or two steps of vacuum arc remelting to ensure the highest purity and quality.
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 Properties
Ti-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: 1,830°F (± 25°); 999°C (± 14°)
Heat Treatment
To achieve high hardness, tensile strength, and fatigue strength, annealing is performed at 1,700 - 1,900°F (927 - 1,038°C).
DAXUN 6-4 Grade 5 Titanium Tube offers diverse heat treatment options to meet specific requirements.
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
Optimal properties are achieved with small cross sections and rapid quenching in the solution-treated and aged condition. Larger cross-section sizes or delayed quenching might result in less than optimal properties.
Hardness
In the annealed condition, the typical hardness ranges from Rockwell C 30-34, whereas in the solution-treated and aged condition, it is approximately Rockwell C 35-39.
Forgeability/Formability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube excels in forgeability at 1,750°F (954°C), with a final forging temperature of 1,450°F (788°C). To achieve optimal performance and characteristics, a reduction of at least 35% is recommended during the forging process.
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube poses challenges when forming at room temperature, even after annealing. However, for severe forming operations such as bending or stretching, the annealed material can be successfully shaped at temperatures up to 1,200°F (649°C) without altering its mechanical properties. Additionally, creep forming is an effective method for hot sizing or forming at temperatures between 1,000 and 1,200°F (538 to 649°C).
Machinability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube can be efficiently machined using techniques common to austenitic stainless steels. Optimum results are achieved with slow cutting speeds, high feed rates, robust tool rigidity, and the application of ample quantities of non-chlorinated cutting fluids.
Weldability
DAXUN Ti-6Al-4V Titanium Tube Grade 5 Titanium Tube boasts excellent weldability in both the annealed and partially aged conditions, with aging accomplished during post-weld heat treatment.
To ensure superior welding quality, precautions must be taken to prevent contamination from oxygen, nitrogen, and hydrogen. Fusion welding should be carried out in an inert gas-filled chamber or with an inert gas tail shield to protect the molten metal and adjacent hot areas. Additionally, spot welding, seam welding, and flash welding can be performed without the necessity of a protective atmosphere.
Special Considerations
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube requires special attention to avoid contamination from hydrogen during improper pickling and from oxygen, nitrogen, and carbon absorption during processes such as forging, heat treating, and brazing. Such contamination can diminish ductility and adversely affect notch sensitivity and formability.
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