Daxun Alloy's pure titanium Grade 1 titanium tubes include:
Our offerings feature seamless titanium tubes and welded titanium tubes, celebrated for their outstanding ductility and cold formability, perfect for deep drawing purposes. Grade 1 titanium tubes are renowned for their reliable general and seawater corrosion resistance and superior protection against oxidizing, neutral, and slightly reducing environments, including chloride solutions.
Titanium, with its low density-approximately half of nickel-based alloys-combined with high strength, light weight, and corrosion resistance, is an exceptional material for harsh chemical conditions. Our titanium conforms 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)
Widely recognized as the preferred titanium tube for industrial applications, our Grade 2 tubes strike a remarkable balance of moderate strength and good ductility. They exhibit excellent corrosion resistance in highly oxidizing and slightly reducing environments, including chlorides. These tubes excel in chemical and offshore industries, aircraft manufacturing, and are ideal for heat exchangers, hypochlorite, fire water, and ballast water systems, as well as CPI equipment and other industrial and aerospace components.
Fabrication
Grade 2 Titanium is highly responsive to cold forming through standard methods. It can be easily machined, provided sharp tools are maintained, and liberal use of coolant is practiced. Similar to machining austenitic stainless steels, the cutting process should involve deep and continuous cuts with slow feeds and speeds.
Stock Availability
Daxun Alloys maintains a diverse inventory of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes to meet your specific needs.
Weight Reduction
CP 2 grade titanium tubes feature a low density and an impressive strength-to-weight ratio, rendering them perfect for applications needing weight reduction without compromising strength. They are easy to form, possess good ductility, and can be welded using standard TIG and MIG processes, though inert gas shielding is essential to avoid embrittlement in the weld zone.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tubes have an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. Upon heating to about 885°C (1625°F), this structure transitions to a beta (body-centered cubic) structure. The impurity and alloying element levels can adjust this transformation temperature. Alloy additions further divide the equilibrium transformation temperature into two zones: below which the alloy is all alpha and above which it is all beta, with a mixed alpha and beta region in between. Typical transformation temperatures for Grade 2 titanium are 890°C (1635°F) for alpha and 913°C (1675°F) for beta.
Grade 2 Titanium Seamless Pipe Manufacturing Process
Daxun's ASTM B338 Grade 2 titanium seamless tubes are meticulously crafted from hollow blanks via hot extrusion or oblique rolling and piercing, followed by multiple cold rolling stages. The production involves continuous perimeter integrity at every phase. The intricate process includes: sponge titanium vacuum arc melting, ingot blanking to create hollow blanks, cleaning, cutting, feeding, hot extrusion or oblique rolling with piercing, degreasing, drying, cutting, online annealing, straightening, pickling, multiple cold rolling, degreasing, drying, vacuum annealing, straightening, cutting, pickling, final inspection, DAXUN marking, 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, utilizing an advanced automatic arc welding (TIG) process. The primary production stages include uncoiling, shearing, butt welding, cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing, annealing, precision reducing and sizing, straightening, a second round of eddy current testing, caliper marking, cutting, ultrasonic testing, hydrostatic testing, final inspection, and packaging. Each welded pipe undergoes a rigorous stress relief heat treatment post-formation and welding. Notably, Daxun refrains from using any filler materials during the welding process, ensuring unparalleled purity and quality.
Ti-6Al-4V Titanium Pipe - Premium Grade 5 Titanium Tube
Titanium Alloy - (UNS R56400)
Introduction
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400) stands as the leading choice among titanium alloys. This duplex alpha+beta titanium alloy is ingeniously stabilized by aluminum for the alpha phase and vanadium for the beta phase. Renowned for its high-strength attributes, this alloy excels even at low temperatures around 800°F (427°C). The ATI Ti-6Al-4V, Grade 5 alloy supports a variety of treatments including annealing, solution treating, and aging. Its applications are diverse, covering critical components such as compressor blades, disks, and rings for jet engines, fuselage and space capsule parts, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and vital forgings, all benefiting from its exceptional strength-to-weight ratio.
The alloy's production begins with melting via vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). It undergoes remelting through one or two additional vacuum arc steps.
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
When high hardness, tensile strength, and fatigue strength are required, 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.
1. Annealing: Performed at 1,275 -1,400°F (691 - 760°C) for ½ to 2 hours, followed by air or furnace cooling.
2. Stress Relief Annealing: Conducted at 1,000 -1,200°F (538 - 649°C) for 1 to 8 hours, then air or furnace cooled.
3. Solution Heat Treating: Executed at 1,675 -1,750°F (913 - 954°C) for 1 hour, followed by water quenching.
4. Aging: Carried out at 975 -1,025°F (524 - 552°C) for 4 to 8 hours, then air cooled.
Optimum Properties
Optimal properties are achieved in smaller cross-sections with rapid quenching in the solution-treated and aged condition. Larger cross-sections or delayed quenching may result in suboptimal properties.
Hardness
Typical hardness in the annealed state is Rockwell C 30-34, while in the solution-treated and aged condition it is approximately Rockwell C 35-39.
Forgeability/Formability
Introducing the DAXUN Ti-6Al-4V Titanium Tube, Grade 5. This superior titanium tube is forged at a precise temperature of 1,750°F (954°C) with a final forging temperature of 1,450°F (788°C), ensuring exceptional quality. For optimal performance, a reduction of at least 35% is highly recommended.
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, presents challenges when forming at room temperature, even in its annealed state. For more demanding forming operations, such as bending or stretching, the annealed material can be processed at temperatures up to 1,200°F (649°C) without compromising its mechanical properties. Creep forming is an effective method for hot sizing or forming at temperatures between 1,000 and 1,200°F (538 to 649°C).
Machinability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is machinable using techniques similar to those for austenitic stainless steels. Employing slow speeds, high feeds, robust tool rigidity, and ample non-chlorinated cutting fluids will yield the best results.
Weldability
Highly weldable, the DAXUN Ti-6Al-4V Titanium Tube, Grade 5, can be processed in both annealed and solution or partially aged conditions, with aging performed during post-weld heat treatment. Specialized welding techniques are essential to prevent contamination from oxygen, nitrogen, and hydrogen.
During the welding process, special care must be taken to avoid contamination. Fusion welding is best done in an inert gas-filled chamber or with the use of an inert gas tail shield over the molten metal and nearby hot zones. Techniques such as spot welding, seam welding, and flash welding do not require a protective atmosphere.
Special Considerations
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is susceptible to contamination from hydrogen during improper pickling, and from oxygen, nitrogen, and carbon absorption during forging, heat treating, or brazing. Such contamination can reduce ductility and negatively impact notch sensitivity and formability.
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