Discover the Excellence of Daxun Alloy's Pure Titanium Grade 1 Tubes:
Our seamless and welded titanium tubes boast exceptional ductility and cold formability, making them perfect for deep drawing applications. Renowned for their outstanding general and seawater corrosion resistance, these Grade 1 titanium tubes also offer superior resistance to oxidizing, neutral, and slightly reducing media, including chlorides.
Titanium is prized for its low density-approximately half that of nickel-based alloys-combined with high strength, light weight, and unparalleled corrosion resistance. Ideal for a variety of challenging chemical environments, these tubes adhere to the following 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)
Grade 2 is the go-to titanium tube for industrial applications, offering an ideal mix of moderate strength and reasonable ductility. It excels in highly oxidizing and slightly reducing conditions, including exposure to chlorides. This versatile tube serves the chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, and more. Its robust design ensures reliable performance in CPI equipment and pipes as well.
Fabrication
Titanium Grade 2 is highly amenable to cold forming using standard techniques. While machining, it requires sharp tools and generous use of coolant. Similar to machining austenitic stainless steels, it demands deep, continuous cuts with slow feeds and speeds to ensure precision.
Stock Availability
Daxun Alloys maintains a comprehensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes to meet diverse needs.
Weight Reduction
With their low density and high strength-to-weight ratio, CP 2 grade titanium tubes are perfect for applications requiring weight reduction without compromising strength. Easy to cold form and weld using conventional TIG and MIG processes, these tubes necessitate inert gas shielding to prevent weld zone embrittlement.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tubes feature an alpha (hexagonal close-packed) crystal structure, akin to pure titanium grades 1 and 3. Upon reaching approximately 885°C (1625°F), they transform into a beta (body-centered cubic) structure. This transformation temperature can be adjusted based on impurities or alloying elements. Alloying elements also split the equilibrium transformation into two temperature zones: the alpha zone (below which the alloy is all alpha) and the beta zone (above which the alloy is all beta). Between these zones, 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 manufactured from hollow blanks using hot extrusion or oblique rolling and piercing processes, followed by multiple cold rolling phases. Throughout the manufacturing process, titanium seamless tubes maintain continuous perimeters. The comprehensive production process includes: sponge titanium vacuum arc melting, ingot blanking to form hollow blanks, cleaning, cutting, hot extrusion or oblique rolling + 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 plates or steel strips through an advanced automatic arc welding (TIG) process. Our meticulous production process includes: titanium plate uncoiling, shearing, butt welding, cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing, annealing, precision reducing and sizing, straightening, second eddy current testing, caliper marking, cutting, ultrasonic testing, hydrostatic testing, final inspection, and packaging. Each welded pipe undergoes at least one stress relief heat treatment post-forming and welding. Notably, Daxun employs filler materials during the welding process to ensure superior durability and performance.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium Tube
Titanium Alloy - (UNS R56400)
Introduction
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400) stands as our most acclaimed titanium alloy. This duplex alpha + beta titanium alloy leverages aluminum as the alpha stabilizer and vanadium as the beta stabilizer. Renowned for its high strength, it performs efficiently at low temperatures around 800°F (427°C). The ATI Ti-6Al-4V, Grade 5 alloy is versatile, ideal for annealing, solution treating, and aging processes. It finds critical applications in compressor blades, discs, and rings for jet engines, fuselage and space capsule components, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and other high strength-to-weight ratio forgings.
The alloy's initial melting is achieved using vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM) techniques. Subsequent remelting occurs in one or two vacuum arc steps to further refine the material.
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's 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) to achieve high hardness, tensile strength, and fatigue strength.
The DAXUN 6-4 Grade 5 Titanium Tube can undergo various heat treatment processes to tailor its properties.
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
Optimal properties are achieved in small cross sections with rapid quenching in the solution treated and aged condition. Larger cross-sections or delayed quenching may result in less optimal properties.
Hardness
Typical hardness: Rockwell C 30-34 in the annealed condition and Rockwell C 35-39 in the solution and aged condition.
Forgeability/Formability
The DAXUN Ti-6Al-4V Titanium Tube, also known as Grade 5 Titanium Tube, exemplifies advanced metallurgy. Expertly forged at a precise 1,750°F (954°C) with a final forging temperature meticulously controlled at 1,450°F (788°C), it is recommended to achieve a reduction of at least 35% to ensure optimal performance. This high-precision process guarantees a product of exceptional quality and durability.
Forming the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, at room temperature is notably challenging, even in its annealed state. To overcome this, severe forming operations like bending or stretching are effective at elevated temperatures up to 1,200°F (649°C) without altering its mechanical integrity. For hot sizing or forming, creep forming is an ideal method at temperatures ranging between 1,000 to 1,200°F (538 to 649°C), ensuring the material retains its robustness.
Machinability
When it comes to machining, the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, performs excellently with techniques used for austenitic stainless steels. For best results, employ slow speeds, high feeds, and ensure robust tool rigidity, coupled with generous applications of non-chlorinated cutting fluids. This approach guarantees precision and efficiency in machining operations.
Weldability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, boasts impressive weldability whether in its annealed state or solution and partially aged conditions. Subsequent aging can be achieved through post-weld heat treatment.
During welding, it is crucial to prevent contamination by oxygen, nitrogen, and hydrogen. Fusion welding should be conducted in a chamber filled with inert gas or by employing an inert gas tail shield to protect the molten metal and adjacent hot areas. Additionally, spot welding, seam welding, and flash welding can be effectively performed without a protective atmosphere, ensuring versatility in welding applications.
Special Considerations
Special care is necessary to avoid hydrogen contamination from improper pickling and the absorption of oxygen, nitrogen, and carbon during processes such as forging, heat treating, and brazing. Such contamination can severely reduce ductility and negatively impact notch sensitivity and formability. The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, demands meticulous handling to maintain its superior properties.
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