Daxun Alloy's Pure Titanium Grade 1 Tubes include:
Seamless and welded titanium tubes, renowned for their exceptional ductility and cold formability, making them perfect for deep drawing. Grade 1 titanium tubes excel in general and seawater corrosion resistance and offer outstanding resistance to oxidizing, neutral, and mildly reducing media (solutions), including chlorides.
Titanium's remarkably low density (about half that of nickel-based alloys), combined with its high strength, lightweight nature, and superior corrosion resistance, makes it an unparalleled choice for various harsh 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)
Grade 2 titanium is the industry standard for various applications, balancing moderate strength with excellent ductility. It provides formidable corrosion resistance in both highly oxidizing and mildly reducing environments (including chlorides). This versatile alloy is used extensively in the chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, CPI equipment, and pipes, where its strength and formability are indispensable.
Fabrication
Titanium Grade 2 exhibits excellent cold forming capabilities using standard techniques. Machining is straightforward but requires sharp tools and abundant coolant to achieve optimal results. Similar to austenitic stainless steels, deep, continuous cuts with slow feeds and speeds are recommended for the best machining results.
Stock Availability
Daxun Alloys maintains a comprehensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in numerous sizes.
Weight Reduction
CP 2 grade titanium tubes offer a stellar strength-to-weight ratio combined with low density, making them ideal for applications demanding weight reduction without compromising strength. These tubes are readily cold formable, exhibit excellent ductility, and can be welded using conventional TIG and MIG techniques, with inert gas shielding to prevent weld zone embrittlement.
Crystal Structure
At ambient temperatures, ASTM B338 Grade 2 titanium tubes possess an alpha (hexagonal close-packed) crystal structure, similar to commercially pure titanium grades 1 and 3. Upon heating to approximately 885°C (1625°F), the structure transforms to beta (body-centered cubic). Alloying elements can adjust this transformation temperature, creating distinct alpha and beta zones. Typical transformation temperatures for Grade 2 titanium are 890°C (1635°F) for alpha and 913°C (1675°F) for beta, with both phases coexisting between these temperatures.
Grade 2 Titanium Seamless Pipe Manufacturing Process
Daxun's ASTM B338 Grade 2 titanium seamless tubes are produced from hollow blanks through hot extrusion or oblique rolling and piercing, followed by multiple cold rolling stages. The process ensures continuous perimeters throughout. Key steps include: melting sponge titanium in a vacuum arc, blanking, cleaning, cutting, feeding, hot extrusion or oblique rolling and piercing, degreasing, drying, cutting, online annealing and straightening, pickling, multiple cold rolling phases, 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, employing the sophisticated automatic arc welding (TIG) process. Our comprehensive 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. These welded pipes undergo stress relief heat treatment post-forming and welding. Notably, Daxun ensures no filler materials are used during welding, guaranteeing superior quality.
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 out as the most esteemed titanium alloy. This duplex alpha+beta titanium alloy incorporates aluminum as the alpha stabilizer and vanadium as the beta stabilizer. Renowned for its high-strength, it operates efficiently at low temperatures of about 800°F (427°C). The ATI Ti-6Al-4V, Grade 5 alloy is versatile, suitable for annealing, solution treating, and aging. It finds applications in 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.
The alloy undergoes initial melting through advanced techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Remelting is achieved through one or two vacuum arc steps, ensuring purity and consistency.
Specifications
• ASTE 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) when high hardness, tensile strength, and fatigue strength are required.
DAXUN 6-4 Grade 5 Titanium Tube offers versatile heat treatment options to meet diverse needs.
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
For optimal properties, small cross-sections with rapid quenching are ideal in the solution treated and aged condition. Larger cross-sections or delayed quenching may compromise these properties.
Hardness
The typical hardness in the annealed condition ranges from Rockwell C 30-34, whereas in the solution and aged condition, it ranges approximately from Rockwell C 35-39.
Forgeability/Formability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is meticulously forged at a precise temperature of 1,750°F (954°C), culminating at 1,450°F (788°C). To achieve peak performance, a reduction rate of no less than 35% is highly recommended.
DAXUN Ti-6Al-4V Titanium Tube, Grade 5, presents challenges in forming at ambient temperatures, even post-annealing. Hence, rigorous forming processes like bending or stretching are optimally conducted at temperatures up to 1,200°F (649°C) without compromising mechanical properties. For exacting hot sizing or forming, creep forming at 1,000 to 1,200°F (538 to 649°C) proves ideal.
Machinability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is amenable to machining using techniques similar to those for austenitic stainless steels. Employ slow speeds, high feeds, and ensure robust tool rigidity, supplemented by liberal application of non-chlorinated cutting fluids.
Weldability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5, exhibits excellent weldability whether in annealed or solution and partially aged states. With aging
achieved through post-weld heat treatment, it is imperative to prevent contamination by oxygen, nitrogen, and hydrogen. Fusion welding is best conducted within an inert gas environment or using an inert gas tail shield over the molten and adjacent hot metal areas. Techniques like spot welding, seam welding, and flash welding can be executed without the necessity for a protective atmosphere.
Special Considerations
DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is susceptible to hydrogen contamination from improper pickling and absorption of oxygen, nitrogen, and carbon during processes like forging, heat treating, and brazing. Such contamination could diminish ductility and adversely affect notch sensitivity and formability.
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