Daxun Alloy's Pure Titanium Grade 1 Tubes Include:
Seamless titanium tubes and welded titanium tubes, renowned for their excellent ductility and cold formability, making them ideal for deep drawing. Grade 1 titanium tubes exhibit exemplary general and seawater corrosion resistance and withstand oxidizing, neutral, and slightly reducing media (solutions), including chlorides.
Titanium's low density (approximately half that of nickel-based alloys), coupled with its high strength, lightweight nature, and exceptional corrosion resistance, makes it an optimal choice for various harsh chemical environments. Applicable standards include: 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 widely utilized titanium tube for industrial applications provides a superior balance of moderate strength and reasonable ductility. It offers outstanding corrosion resistance in both highly oxidizing and slightly reducing conditions, including chlorides. Ideal for chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and pipes.
Fabrication
Titanium Grade 2 is highly responsive to cold forming using standard techniques. It can be readily machined, albeit with special attention to maintaining sharp tools and liberal coolant use. Similar to machining austenitic stainless steels, cuts should be deep and continuous with slow feeds and speeds.
Stock Availability
Daxun Alloys maintains an extensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes.
Weight Reduction
CP 2 grade titanium tubes boast low density and a high strength-to-weight ratio, making them ideal for weight-sensitive applications without compromising overall strength. They are cold formable, possess good ductility, and can be welded using conventional TIG and MIG processes, though inert gas shielding is essential to prevent embrittlement of the weld zone.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tube features 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. This transformation temperature can be adjusted based on impurities or alloying additions. Alloying elements also segment the equilibrium transformation temperature into two zones: the alpha transformation zone, below which the alloy is all alpha, and the beta transformation zone, above which the alloy is all beta. Between these two temperatures, both alpha and beta forms coexist. Typical alpha and beta transformation temperatures for grade 2 titanium 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 hot extrusion or oblique rolling and piercing processes, followed by multiple cold rolling stages. Titanium seamless tubes should maintain continuous perimeters at all manufacturing stages. The comprehensive manufacturing process includes: sponge titanium vacuum arc melting, ingot blanking to create hollow blanks, cleaning, cutting and feeding, hot extrusion or oblique rolling and 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 meticulously crafted from annealed flat-rolled steel plates or strips, employing the advanced automatic arc welding (TIG) process. Our comprehensive production process includes steps like 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. These welded pipes undergo at least one stress relief heat treatment post-forming and welding. Importantly, Daxun ensures no filler materials are used during the welding phase.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium Tube
Titanium Alloy - (UNS R56400)
Introduction
DAXUN's Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400), stands as the premier titanium alloy. This duplex alpha+beta titanium alloy incorporates aluminum as the alpha stabilizer and vanadium as the beta stabilizer, delivering remarkable strength. Capable of being utilized at low temperatures around 800°F (427°C), the ATI Ti-6Al-4V Grade 5 alloy excels in annealing, solution treating, and aging applications. It is integral in compressor blades, disks, and rings for jet engines, fuselage and space capsule components, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and critical forgings with a high strength-to-weight ratio.
The alloy is initially melted using vacuum arc remelting (VAR), electron beam (EB) heating, or plasma arc hearth melting (PAM). Subsequent remelting occurs in one or two 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: 1,830°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.
DAXUN 6-4 Grade 5 Titanium Tube offers versatile heat treatment options.
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
Small cross-sections with rapid quenching achieve optimal properties in the solution-treated and aged condition. Larger cross-section sizes or delayed quenching may lead to suboptimal properties.
Hardness
Typical hardness in the annealed condition is Rockwell C 30-34, and approximately Rockwell C 35-39 in the solution and aged condition.
Forgeability/Formability
Experience the superior quality of DAXUN's Ti-6Al-4V Titanium Tube, Grade 5. This exceptional tubing is forged at 1,750°F (954°C), with a final forging temperature of 1,450°F (788°C), ensuring optimal performance. For best results, we recommend a reduction of at least 35%.
DAXUN's Ti-6Al-4V Titanium Tube, Grade 5, offers remarkable durability even under severe forming conditions. Though forming at room temperature is challenging, annealed materials can endure bending or stretching at temperatures up to 1,200°F (649°C) without compromising mechanical properties. Additionally, creep forming is ideal for hot sizing or forming at temperatures between 1,000 to 1,200°F (538 to 649°C).
Machinability
DAXUN's Ti-6Al-4V Titanium Tube, Grade 5, exhibits excellent machinability when using techniques designed for austenitic stainless steels. Employ slow speeds, high feeds, and ensure good tool rigidity. Use ample non-chlorinated cutting fluids to achieve precise and efficient machining results.
Weldability
DAXUN's Ti-6Al-4V Titanium Tube, Grade 5, stands out for its exceptional weldability. Whether in annealed, solution, or partially aged conditions, this tube is easily weldable. Post-weld aging is recommended
to enhance strength. Ensure to prevent contamination from oxygen, nitrogen, and hydrogen. Fusion welding can be performed in an inert gas-filled chamber, or use an inert gas tail shield over molten metal and hot zones. Spot, seam, and flash welding can be undertaken without a protective atmosphere.
Special Considerations
While DAXUN's Ti-6Al-4V Titanium Tube, Grade 5, is of the highest quality, take care to avoid contamination from hydrogen during improper pickling and from absorption of oxygen, nitrogen, and carbon during forging, heat treating, and brazing. Such contamination may reduce ductility and impact notch sensitivity and formability.
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