Daxun Alloy's Pure Titanium Grade 1 Tubes Include:
Seamless Titanium Tubes and Welded Titanium Tubes, renowned for their excellent ductility and outstanding cold formability, making them perfect for deep drawing applications. Grade 1 titanium tubes exhibit superb general and seawater corrosion resistance, along with exceptional resistance to oxidizing, neutral, and slightly reducing solutions, including chlorides.
Titanium's exceptional properties, such as its low density (approximately half that of nickel-based alloys), high strength, light weight, and remarkable corrosion resistance, make it an ideal choice for various harsh chemical environments. These tubes conform to the following execution 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)
This titanium tube is the industry standard for numerous applications, offering an outstanding balance of moderate strength and excellent ductility. It provides superior corrosion resistance in highly oxidizing and mildly reducing environments, including chlorides. Ideal for the chemical and offshore industries as well as aircraft manufacturing, where both strength and formability are critical. Additionally, it sees extensive use in heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and piping.
Fabrication
Titanium Grade 2 is highly responsive to cold forming using standard methods. It can be machined with ease, provided that sharp tools are maintained and lubricants are liberally applied. Similar to machining austenitic stainless steels, the process involves deep, continuous cuts with slow feeds and speeds for optimal results.
Stock Availability
Daxun Alloys maintains a diverse stock of CP 2 Grade Titanium Seamless and Welded Pipes in a variety of sizes, ensuring prompt availability for your needs.
Weight Reduction
CP 2 Grade Titanium Tubes boast low density and an impressive strength-to-weight ratio, making them ideal for applications requiring significant weight reduction without compromising strength. These tubes are cold formable, possess excellent ductility, and can be welded using conventional TIG and MIG processes. Inert gas shielding is essential 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, akin to commercially pure titanium grades 1 and 3. Upon reaching approximately 885°C (1625°F), it transforms to a beta (body-centered cubic) structure. This transformation temperature can vary based on the type and quantity of impurities or alloying additions. Alloying elements also divide 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 two temperatures, alpha and beta phases coexist. For Grade 2 Titanium, 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 using either a hot extrusion process or an oblique rolling and piercing process, followed by several cold rolling stages. These seamless tubes exhibit continuous perimeters throughout all manufacturing stages. The intricate manufacturing process includes: sponge titanium vacuum arc melting, ingot blanking for hollow blanks, cleaning, cutting and feeding, hot extrusion or oblique rolling plus 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 annealed flat-rolled steel plate or steel strip through an advanced automatic arc welding (TIG) process. The production journey includes: 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. To ensure unparalleled quality, these welded pipes undergo at least one stress relief heat treatment post-forming and welding. Notably, Daxun employs filler materials during the welding process, guaranteeing superior pipe integrity.
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 premier titanium alloy, celebrated for its unique duplex alpha+beta composition stabilized by aluminum and vanadium. This robust alloy operates efficiently at temperatures as low as 800°F (427°C). ATI Ti-6Al-4V, Grade 5 alloy is versatile in its applications, including annealing, solution treating, and aging. Its high strength-to-weight ratio makes it ideal for compressor blades, disks, and rings in jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and critical forgings.
The alloy's initial melting is achieved through vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Remelting involves one or two vacuum arc steps to ensure optimal purity and performance.
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: 1830°F (± 25°); 999°C (± 14°)
Heat Treatment
Annealed at 1,700-1,900°F (927 - 1,038°C), this treatment is ideal when high hardness, tensile strength, and fatigue strength are paramount.
DAXUN 6-4 Grade 5 Titanium Tube offers versatile 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
Achieving optimal properties requires small cross sections with rapid quenching in the solution treated and aged condition. Larger cross-sections and/or delayed quenching might result in suboptimal properties.
Hardness
In the annealed condition, typical hardness is Rockwell C 30-34, whereas in the solution and aged condition, it reaches approximately Rockwell C 35-39.
Forgeability/Formability
Discover the unrivaled strength and durability of the DAXUN Ti-6Al-4V Titanium Tube, Grade 5. This premium titanium tube is forged at a precise temperature of 1,750°F (954°C), with a final forging touch at 1,450°F (788°C). For optimal results, a minimum reduction of 35% is highly recommended. Experience superior performance in every application with DAXUN's meticulously crafted titanium tubes.
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is known for its challenging formability at room temperature, even in an annealed state. However, for more demanding forming operations such as bending or stretching, the annealed material can be effectively manipulated at elevated temperatures up to 1,200°F (649°C) without altering its mechanical integrity. For specialized hot sizing or forming, creep forming techniques at temperatures between 1,000 to 1,200°F (538 to 649°C) are ideal, ensuring precision and consistency.
Machinability
Machining the DAXUN Ti-6Al-4V Titanium Tube, Grade 5, requires expertise and precision. Employ standard austenitic stainless steel machining methods, using slow speeds and high feeds. Maintain excellent tool rigidity, and ensure the liberal use of non-chlorinated cutting fluids to achieve the finest results.
Weldability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, exhibits excellent weldability in both annealed and solution-aged conditions. Post-weld heat treatment is essential for effective aging. Take necessary precautions to prevent contamination from oxygen, nitrogen, and hydrogen. Fusion welding is best performed in an inert gas-filled chamber or with an inert gas tail shield to protect the molten metal and surrounding hot zones. Techniques like spot welding, seam welding, and flash welding can be executed without a protective atmosphere.
Ensure optimal weld quality in DAXUN Ti-6Al-4V Titanium Tubes by avoiding contamination from oxygen, nitrogen, and hydrogen. Post-weld heat treatment is crucial for aging. Utilize fusion welding in an inert gas-filled chamber or with an inert gas tail shield. Protective atmospheres are not needed for spot, seam, and flash welding, ensuring versatile and efficient welding solutions.
Special Considerations
Special care must be taken when handling DAXUN Ti-6Al-4V Titanium Tubes to prevent contamination. Improper pickling and absorption of hydrogen, oxygen, nitrogen, and carbon during processes like forging, heat treating, and brazing can compromise ductility, notch sensitivity, and formability. Maintain stringent controls to preserve the tube's superior qualities and ensure lasting performance.
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