Daxun Alloy's Pure Titanium Grade 1 Titanium Tubes Include:
Experience unparalleled performance with our seamless and welded titanium tubes. Renowned for their exceptional ductility and cold formability, these tubes are perfect for deep drawing applications. Grade 1 titanium tubes offer outstanding general and seawater corrosion resistance, ensuring excellent durability against oxidizing, neutral, and slightly reducing solutions, including chlorides.
Titanium's inherent properties, such as low density (approximately half that of nickel-based alloys), high strength, lightweight nature, and formidable corrosion resistance, make it an ideal choice for challenging chemical environments. Our tubes adhere to top-notch execution standards, including ASTM B338, ASTM B265, ASME SB265, ASTM F67, ISO 5832-2, 3.7025, and UNS R50250.
Grade 2 Titanium Tube (UNS R50400 / Werkstoff WS 3.7034)
Grade 2 titanium tubes are the industry standard for numerous applications, offering a perfect balance of moderate strength and reasonable ductility. They excel in highly oxidizing and slightly reducing conditions, including those with chlorides. These tubes provide robust corrosion resistance and are widely used in the chemical and offshore industries, as well as in aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and piping.
Fabrication
Titanium Grade 2 is highly responsive to cold forming using conventional techniques. It can be machined efficiently, but it is crucial to maintain sharp tools and use ample coolant. Similar to machining austenitic stainless steels, deep and continuous cuts with slow feeds and speeds yield the best results.
Stock Availability
Daxun Alloys boasts an extensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes available in various sizes to meet your specific needs.
Weight Reduction
With their low density and high strength-to-weight ratio, CP 2 grade titanium tubes are ideal for applications demanding weight reduction without compromising strength. These tubes offer excellent cold formability, ductility, and weldability using conventional TIG and MIG processes, provided inert gas shielding is used to avoid weld zone embrittlement.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tubes exhibit an alpha (hexagonal close-packed) crystal structure, similar to commercially pure titanium grades 1 and 3. At approximately 885°C (1625°F), this transforms into a beta (body-centered cubic) structure. The transformation temperature can vary based on impurities or alloying elements, which divide the equilibrium transformation into alpha and beta zones. The alpha transformation zone lies below, while the beta transformation zone lies above these temperatures, with both alpha and beta forms coexisting in between. Typical 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 using hot extrusion or oblique rolling and piercing, followed by multiple cold rolling stages. The seamless manufacturing process ensures continuous perimeters at all stages. Our comprehensive process includes 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, 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 plate or steel strip, utilizing the precision of automatic arc welding (TIG) processes. The main production stages encompass: titanium plate uncoiling, precision shearing, butt welding, meticulous 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, thorough final inspection, and professional packaging. Each welded pipe undergoes at least one stress relief heat treatment post forming and welding. Notably, Daxun refrains from using any filler materials during the welding process.
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, characterized as a duplex alpha+beta titanium alloy incorporating aluminum as the alpha stabilizer and vanadium as the beta stabilizer. This robust and high-strength alloy excels even at low temperatures, approximately 800°F (427°C). The ATI Ti-6Al-4V, Grade 5 alloy finds applications across annealing, solution treating, and aging processes. It is indispensable in manufacturing compressor blades, disks, and rings for jet engines, fuselage and space capsule components, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and other critical forgings demanding a high strength-to-weight ratio.
The alloy is initially melted using advanced methods 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.
Specifications
• ASTE 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) when high hardness, tensile strength, and fatigue strength are paramount.
DAXUN 6-4 Grade 5 Titanium Tube avails various heat treatment methodologies.
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-sectional sizes and/or delayed quenching may result in suboptimal properties.
Hardness
Typical hardness in the annealed state is Rockwell C 30-34, and approximately Rockwell C 35-39 in the solution-treated and aged state.
Forgeability/Formability
Experience the superior quality of DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, meticulously forged at 1,750°F (954°C) with a precise final forging temperature of 1,450°F (788°C). For optimal performance, a reduction of at least 35% is highly recommended.
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube presents challenges when forming at room temperature, even in its annealed state. However, demanding forming processes such as bending or stretching can be executed on annealed material at elevated temperatures up to 1,200°F (649°C) without altering its mechanical integrity. For hot sizing or forming, creep forming is an effective technique at temperatures between 1,000 to 1,200°F (538 to 649°C).
Machinability
Machining the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is feasible using standard methods for austenitic stainless steels. Employing slow speeds, high feeds, robust tool rigidity, and abundant non-chlorinated cutting fluids ensures the best machining outcomes.
Weldability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube demonstrates excellent weldability in both annealed and solution, as well as partially aged conditions. Aging is achieved during post-weld heat treatment.
To maintain weld integrity, it is critical to avoid contamination from oxygen, nitrogen, and hydrogen. Fusion welding should be carried out in an inert gas-filled chamber or using an inert gas tail shield to protect the molten metal and nearby hot zones. Techniques such as spot welding, seam welding, and flash welding can be successfully performed without a protective atmosphere.
Special Considerations
Care must be taken with DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube to avoid contamination from hydrogen during improper pickling and from the absorption of oxygen, nitrogen, and carbon during forging, heat treating, and brazing processes. Such contamination can compromise ductility, notch sensitivity, and formability.
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