Discover the superior quality of Daxun Alloy's pure titanium Grade 1 tubes:
Our seamless and welded titanium tubes boast outstanding ductility and cold formability, making them perfect for deep drawing applications. Grade 1 titanium tubes are celebrated for their exceptional general and seawater corrosion resistance, as well as their excellent endurance against oxidizing, neutral, and slightly reducing media, including chlorides.
Titanium's unique characteristics-low density (approximately half that of nickel-based alloys), high strength, lightweight, and remarkable corrosion resistance-make it an ideal choice for demanding chemical conditions. Our adherence to rigorous standards ensures the highest quality: 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)
Widely regarded as the industrial standard, Grade 2 titanium tubes deliver an optimal blend of moderate strength and excellent ductility. They excel in highly oxidizing and slightly reducing conditions, including chlorides. This makes them invaluable in the chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and pipelines.
Fabrication
Titanium Grade 2 is exceptionally responsive to cold forming using standard methods. While it can be readily machined, it requires sharp tools and liberal use of coolant to maintain its integrity. Similar to machining austenitic stainless steels, the process involves deep, continuous cuts executed at slow feeds and speeds.
Stock Availability
Daxun Alloys offers an extensive range of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes to meet your needs.
Weight Reduction
CP 2 grade titanium tubes are engineered for applications demanding weight reduction without compromising strength. With their low density and high strength-to-weight ratio, these tubes are cold formable and exhibit excellent ductility. They can be welded using conventional TIG and MIG processes, provided inert gas shielding is used to prevent embrittlement in the weld zone.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tubes feature an alpha (hexagonal close-packed) crystal structure, similar to commercially pure titanium grades 1 and 3. Around 885°C (1625°F), this structure transitions to a beta (body-centered cubic) form. The transformation temperature can be adjusted with different impurities or alloying additions, dividing the transformation into alpha and beta zones. For Grade 2, 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 stages. The seamless tubes maintain continuous perimeters throughout manufacturing. The comprehensive process includes vacuum arc melting of sponge titanium, hollow blank preparation, cutting, hot extrusion or rolling and piercing, degreasing, drying, online annealing, straightening, pickling, multiple cold rolling, vacuum annealing, 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 strip through the state-of-the-art automatic arc welding (TIG) process. Our sophisticated production journey includes: uncoiling titanium plates, precision shearing, butt welding, thorough cleaning, expert pipe forming, high-grade TIG welding, rigorous eddy current testing, pre-sizing, annealing, precision reducing, sizing, straightening, repeated eddy current testing, exact caliper marking, cutting, ultrasonic testing, hydrostatic testing, final inspection, and meticulous packaging. Each welded pipe undergoes at least one stress-relief heat treatment post forming and welding. Notably, Daxun employs no filler materials during the welding phase, ensuring unparalleled 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 pinnacle of titanium alloys in popularity. This versatile duplex alpha+beta alloy leverages aluminum as the alpha stabilizer and vanadium as the beta stabilizer, providing extraordinary strength even at low temperatures around 800°F (427°C). Renowned for its applications in annealing, solution treating, and aging, this high-strength alloy is a cornerstone in the aerospace and defense industries. It finds its use 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.
Expertly crafted, the alloy begins its journey via vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Further refinement is achieved through one or two vacuum arc remelting steps, ensuring impeccable quality 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: 1830°F (± 25°); 999°C (± 14°)
Heat Treatment
Annealed at 1,700-1,900°F (927 - 1,038°C) for optimal hardness, tensile strength, and fatigue resistance, ensuring the highest performance standards are met.
DAXUN 6-4 Grade 5 Titanium Tube offers versatile heat treatment options to cater to diverse industrial needs.
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
Achieve peak properties with the solution-treated and aged condition through rapid quenching for small cross-sections. Larger sizes or delayed quenching may yield less than optimal characteristics.
Hardness
In its annealed state, the typical hardness ranges from Rockwell C 30-34, while in the solution-treated and aged state, it reaches approximately Rockwell C 35-39.
Forgeability/Formability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (ASTM B338), undergoes forging at an initial temperature of 1,750°F (954°C), with the final forging process completed at 1,450°F (788°C). To achieve optimal results, a reduction of at least 35% is highly recommended.
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, presents challenges in forming at room temperature, even post-annealing. However, complex forming operations like bending or stretching can be efficiently conducted on annealed material at elevated temperatures up to 1,200°F (649°C) without altering its mechanical properties. Hot sizing or forming through creep forming is feasible between 1,000 and 1,200°F (538 to 649°C).
Machinability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, can be effectively machined using techniques applicable to austenitic stainless steels. Employing slow speeds, high feeds, and ensuring robust tool rigidity, along with the use of copious non-chlorinated cutting fluids, yields the best machining results.
Weldability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is highly weldable in both annealed and solution-aged conditions, with the aging process completed during post-weld heat treatment.
To maintain weld integrity, it is crucial to prevent contamination with oxygen, nitrogen, and hydrogen. Fusion welding should be conducted 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 performed without needing a protective atmosphere.
Special Considerations
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is susceptible to contamination by hydrogen during improper pickling, as well as by oxygen, nitrogen, and carbon during forging, heat treating, and brazing processes. Such contamination can lead to reduced ductility, increased notch sensitivity, and decreased formability.
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