Daxun Alloy's pure titanium Grade 1 titanium tubes offer unparalleled quality and features, including:
Seamless titanium tubes and welded titanium tubes, celebrated for their exceptional ductility and cold formability, are perfect for deep drawing applications. Grade 1 titanium tubes stand out with their superior general and seawater corrosion resistance, and remarkable resilience to oxidizing, neutral, and slightly reducing media, including chlorides.
Titanium's low density-approximately half that of nickel-based alloys-combined with its high strength, light weight, and outstanding corrosion resistance, make it an ideal candidate for a variety of challenging chemical conditions. The applicable standards are: 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 predominantly used in industrial settings, offering an excellent balance of moderate strength and reasonable ductility. Its exceptional corrosion resistance in both highly oxidizing and slightly reducing conditions, including chlorides, makes it invaluable. Ideal for chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, firewater systems, ballast water systems, CPI equipment, and pipes.
Fabrication
Titanium Grade 2 is highly responsive to cold forming using standard techniques. It can be easily machined, but it is crucial to maintain sharp tools and use plenty of coolant. Similar to machining austenitic stainless steels, cuts should be deep and continuous with slow feeds and speeds.
Stock Availability
Daxun Alloys maintains a comprehensive stock of CP 2 Grade Titanium Seamless and Welded Pipes in an extensive range of sizes.
Weight Reduction
CP 2 grade titanium tubes are distinguished by their low density and high strength-to-weight ratio, making them ideal for applications requiring weight reduction without compromising overall strength. They are easily cold formable, exhibit good ductility, and can be welded using conventional TIG and MIG processes, although inert gas shielding is necessary to prevent embrittlement in the weld zone.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tube features an alpha (hexagonal close-packed) crystal structure, similar to commercially pure titanium grades 1 and 3. At approximately 885°C (1625°F), it transitions to a beta (body-centered cubic) structure. This transformation temperature can vary depending on impurities or alloying additions. Alloying elements also split the single equilibrium transformation temperature into two zones: the alpha zone below which the alloy is all alpha, and the beta zone above which the alloy is all beta. Between these temperatures, both alpha and beta forms 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 through a hot extrusion process or oblique rolling and piercing processes, followed by multiple cold rolling stages. The seamless tubes must maintain continuous perimeters throughout manufacturing. The production process includes: sponge titanium vacuum arc melting, ingot blanking to obtain hollow blanks, cleaning, cutting, and feeding, hot extrusion, or oblique rolling + piercing, degreasing, drying, cutting, online annealing, 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 a marvel of precision engineering, crafted from annealed flat-rolled steel plate or steel strip through the advanced automatic arc welding (TIG) process. Our meticulous production stages include 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. Ensuring the highest quality, each welded pipe undergoes at least one stress relief heat treatment post-formation and welding. It's noteworthy that Daxun employs filler materials during the welding process to guarantee superior integrity and performance.
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 pinnacle of titanium alloys. This duplex alpha+beta titanium alloy leverages aluminum as the alpha stabilizer and vanadium as the beta stabilizer, providing unmatched strength and versatility. Capable of performing at low temperatures around 800°F (427°C), the ATI Ti-6Al-4V, Grade 5 alloy is ideal for applications requiring annealing, solution treating, and aging. It is extensively used in compressor blades, disks, and rings for jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and critical forgings that demand a high strength-to-weight ratio, exemplifying excellence in advanced engineering.
The alloy's initial melting involves sophisticated processes such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). It undergoes remelting in one or two vacuum arc steps to ensure the highest 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: 1830°F (± 25°); 999°C (± 14°)
Heat Treatment
For applications demanding enhanced hardness, tensile, and fatigue strength, the alloy is annealed at 1,700-1,900°F (927 - 1,038°C).
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
Achieving optimal properties often depends on the cross-sectional size and the quenching speed. Smaller cross sections with rapid quenching can yield superior results, while larger sections or delayed quenching might not attain the highest properties.
Hardness
The typical hardness for the alloy in its annealed state is Rockwell C 30-34, whereas in the solution treated and aged condition, it reaches approximately Rockwell C 35-39.
Forgeability/Formability
Introducing the DAXUN Ti-6Al-4V Titanium Tube, Grade 5! This high-performance titanium tube is expertly forged at 1,750°F (954°C) and finalized at 1,450°F (788°C). For optimal results, a reduction of at least 35% is recommended during the forging process, ensuring superior quality and durability.
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 presents challenges in forming at room temperature, even when annealed. To achieve the best results, severe forming operations like bending or stretching should be performed on the annealed material at temperatures up to 1,200°F (649°C) without altering its mechanical properties. For hot sizing or forming, creep forming is recommended at temperatures ranging from 1,000 to 1,200°F (538 to 649°C).
Machinability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 can be precisely machined using techniques suited for austenitic stainless steels. Employ slow speeds, high feeds, and ensure excellent tool rigidity. The use of copious amounts of non-chlorinated cutting fluids is essential for achieving precision and maintaining the integrity of the material.
Weldability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 is highly weldable whether in the annealed or solution and partially aged conditions. Successful aging is accomplished during post-weld heat treatment.
To maintain the quality of the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 during welding, precautions against contamination with oxygen, nitrogen, and hydrogen are critical. Fusion welding should be performed in an inert gas-filled chamber or with an inert gas tail shield over the molten metal and nearby hot zones. Additionally, spot welding, seam welding, and flash welding can be conducted without a protective atmosphere, ensuring versatility in welding techniques.
Special Considerations
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 requires careful handling to avoid contamination with hydrogen, which can occur from improper pickling or absorption of oxygen, nitrogen, and carbon during forging, heat treating, and brazing. Such contamination can diminish ductility and impair notch sensitivity and formability, impacting the material's overall performance.
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