Daxun Alloy's pure titanium Grade 1 titanium tubes include:
seamless titanium tubes and welded titanium tubes. These tubes boast exceptional ductility and cold formability, making them perfect for deep drawing applications. Grade 1 titanium tubes are renowned for their excellent general and seawater corrosion resistance. They also offer remarkable resistance to oxidizing, neutral, and slightly reducing media (solutions), including chlorides.
Titanium's low density (approximately half that of nickel-based alloys), combined with its high strength, light weight, and corrosion resistance, makes it an outstanding choice for a wide range of harsh chemical environments. Our titanium tubes adhere to the following stringent 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 grade of titanium is the most frequently utilized for industrial purposes, offering a perfect blend of moderate strength and reasonable ductility. It provides superior corrosion resistance in both highly oxidizing and slightly reducing conditions, including chlorides. Grade 2 titanium is highly sought after in the chemical and offshore industries, aircraft manufacturing, and for applications such as heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and various piping solutions.
Fabrication
Titanium Grade 2 responds exceptionally well to cold forming using conventional methods. It can be easily machined; however, it is crucial to maintain sharp tools and utilize liberal amounts of coolant. Similar to machining austenitic stainless steels, deep and continuous cuts with slow feed and speed rates are recommended.
Stock Availability
Daxun Alloys maintains a comprehensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes, available in a wide range of sizes to meet your specific requirements.
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. These tubes are cold formable, exhibit excellent ductility, and can be welded using standard TIG and MIG processes, provided that inert gas shielding is employed to prevent weld zone embrittlement.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tube possesses an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. At approximately 885°C (1625°F), it transforms to a beta (body-centered cubic) structure. The transformation temperature can vary based on impurities or alloying additions. The introduction of alloying elements results in two distinct transformation temperature zones: the alpha transformation zone, below which the alloy remains all alpha, and the beta transformation 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 using hot extrusion or oblique rolling and piercing processes, followed by multiple cold rolling operations. The manufacturing process ensures that the titanium seamless tubes maintain continuous perimeters at every stage. The comprehensive process involves: sponge titanium vacuum arc melting, ingot blanking to obtain hollow blanks, cleaning, cutting and feeding, hot extrusion or oblique rolling and piercing, degreasing, drying, cutting, online annealing and straightening, pickling, multiple cold rolling sequences, 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 using the state-of-the-art automatic arc welding (TIG) process. The comprehensive production procedure includes: uncoiling titanium plate, shearing, butt welding, cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing, annealing, precision reducing and sizing, straightening, eddy current testing again, caliper marking, cutting, ultrasonic testing, hydrostatic testing, final inspection, and packaging. Notably, each welded pipe undergoes at least one stress relief heat treatment post-forming and welding. Daxun ensures no use of filler materials during the welding process, guaranteeing the utmost purity and 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 as the most sought-after titanium alloy, embodying a duplex alpha+beta structure stabilized by aluminum and vanadium. This exceptional high-strength alloy is serviceable at temperatures as low as about 800°F (427°C). The ATI Ti-6Al-4V, Grade 5 alloy excels in applications such as annealing, solution treating, and aging. It is indispensable in the manufacturing of compressor blades, disks, and rings for jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and critical forgings, all benefiting from its remarkable strength-to-weight ratio.
The alloy's initial melting employs advanced techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Subsequent remelting is conducted in one or two vacuum arc steps, ensuring superior purity and consistency.
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
Annealed at 1,700-1,900°F (927 - 1,038°C) when heightened hardness, tensile strength, and fatigue strength are required.
DAXUN 6-4 Grade 5 Titanium Tube can undergo diverse heat treatment methods to achieve desired properties.
1. Annealing: 1,275 - 1,400°F (691 - 760°C) for ½ to 2 hours, followed by air or furnace cooling.
2. Stress Relief Annealing: 1,000 - 1,200°F (538 - 649°C) for 1 to 8 hours, followed by air or furnace cooling.
3. Solution Heat Treating: 1,675 - 1,750°F (913 - 954°C) for 1 hour, followed by water quenching.
4. Aging: 975 - 1,025°F (524 - 552°C) for 4 to 8 hours, followed by air cooling.
Optimum Properties
Achieving optimum properties depends on cross-section size and quenching speed. Smaller cross-sections with rapid quenching yield superior results, while larger cross-sections and delayed quenching may result in suboptimal properties.
Hardness
Typical hardness ranges from Rockwell C 30-34 in the annealed condition to approximately Rockwell C 35-39 in the solution-treated and aged condition.
Forgeability/Formability
The DAXUN Ti-6Al-4V Titanium Tube, also known as the Grade 5 Titanium Tube, is meticulously forged at a precise temperature of 1,750°F (954°C). To achieve the apex of strength and durability, a final forging temperature of 1,450°F (788°C) is essential. For unmatched results, we recommend a reduction of at least 35% during the forging process.
While the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, poses challenges in forming at room temperature-even when annealed-its true versatility shines at elevated temperatures. For demanding operations like bending or stretching, the annealed material can be skillfully manipulated at temperatures soaring up to 1,200°F (649°C) without compromising its mechanical properties. The creep forming technique is ideal for hot sizing or forming within a temperature range of 1,000 to 1,200°F (538 to 649°C), maintaining the tube's structural integrity.
Machinability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, aligns perfectly with machining methods used for austenitic stainless steels. Employing slow speeds, high feeds, and ensuring robust tool rigidity are crucial. Additionally, generous application of non-chlorinated cutting fluids is recommended to achieve precision machining of this high-grade titanium tube.
Weldability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, exhibits excellent weldability whether in the annealed state or when subjected to solution and partial aging conditions.
Post-weld heat treatment is crucial to attain optimal aging, and precautions are necessary to prevent contamination from oxygen, nitrogen, and hydrogen. Fusion welding is best performed either in an inert gas-filled chamber or using an inert gas tail shield over the molten metal and adjacent hot zones. Additionally, spot welding, seam welding, and flash welding can be seamlessly executed without the need for a protective atmosphere.
Special Considerations
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, requires meticulous handling to avoid contamination from hydrogen during improper pickling, as well as from oxygen, nitrogen, and carbon during processes like forging, heat treating, and brazing. Such contamination may significantly diminish ductility and adversely affect notch sensitivity and formability, thereby impacting the material's performance and reliability.
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