Daxun Alloy's Pure Titanium Grade 1 Titanium Tubes Include:
Seamless and welded titanium tubes, known for their exceptional ductility and cold formability, are ideal for deep drawing applications. Grade 1 titanium tubes offer superior general and seawater corrosion resistance, excelling against oxidizing, neutral, and lightly reducing media (including chlorides).
Titanium's exceptional properties-including low density (approximately half that of nickel-based alloys), high strength, lightweight, and formidable corrosion resistance-make it the perfect choice for diverse and challenging chemical environments. Execution 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)
Highly favored in industrial applications, Grade 2 Titanium Tube strikes an excellent balance of moderate strength and commendable ductility. It delivers outstanding corrosion resistance in both highly oxidizing and slightly reducing environments (including chlorides). This material is extensively used in chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and piping solutions.
Fabrication
Grade 2 Titanium is highly conducive to cold forming using standard techniques. It can be easily machined, but maintaining sharp tools and liberal use of coolant is critical. Similar to machining austenitic stainless steels, machining should involve deep, continuous cuts with slow feeds and speeds.
Stock Availability
Daxun Alloys maintains an extensive stock of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes.
Weight Reduction
CP 2 Grade Titanium Tubes, known for their low density and high strength-to-weight ratio, are ideal for applications where weight reduction is crucial without compromising strength. They exhibit excellent cold formability, good ductility, and can be welded using conventional TIG and MIG processes. Inert gas shielding is essential to prevent weld zone embrittlement.
Crystal Structure
At room temperature, ASTM B338 Grade 2 Titanium Tube exhibits an alpha (hexagonal close-packed) crystal structure, similar to commercially pure titanium grades 1 and 3. At approximately 885°C (1625°F), it transitions to a beta (body-centered cubic) structure. This transformation temperature can vary based on impurities or alloying additions. Alloying elements can also create two temperature 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 zones, 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 crafted from hollow blanks through hot extrusion or oblique rolling and piercing processes, followed by multiple cold rolling steps. These tubes must maintain continuous perimeters throughout the manufacturing process. The seamless tube production involves: sponge titanium vacuum arc melting, ingot blanking to obtain hollow blanks, cleaning, cutting and feeding, hot extrusion or oblique rolling plus 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 plate or steel strip via the state-of-the-art automatic arc welding (TIG) process. The sophisticated production stages encompass: 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. Post-formation and welding, these welded pipes undergo at least one stress relief heat treatment. Notably, Daxun's process excludes the use of any filler materials during welding.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium TubeTitanium Alloy - (UNS R56400)
Introduction
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400) stands as the pinnacle of titanium alloys. This duplex alpha+beta alloy integrates aluminum as the alpha stabilizer and vanadium as the beta stabilizer, granting it exceptional strength and performance at low temperatures, approximately 800°F (427°C). The ATI Ti-6Al-4V, Grade 5 alloy is adept in processes such as annealing, solution treating, and aging. Its applications span a wide range, including compressor blades, disks, and rings for jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and critical forgings, all benefiting from its high strength-to-weight ratio.
The alloy's initial melting is performed using advanced techniques like vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM), followed by remelting in one or two vacuum arc steps to ensure superior quality.
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 PropertiesTi-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 This high-strength titanium tube is annealed at temperatures ranging from 1,700-1,900°F (927 - 1,038°C), optimizing its hardness, tensile strength, and fatigue strength.
DAXUN 6-4 Grade 5 Titanium Tube can undergo various heat treatment methods to enhance its properties.
1. Annealing: 1,275-1,400°F (691 - 760°C), ½ to 2 hours, air or furnace cooling.
2. Stress Relief Annealing: 1,000-1,200°F (538 - 649°C), 1 to 8 hours, air or furnace cooling.
3. Solution Heat Treating: 1,675-1,750°F (913 - 954°C), 1 hour, followed by water quenching.
4. Aging: 975-1,025°F (524 - 552°C), 4 to 8 hours, air cooling.
Optimum Properties Optimal properties are achieved in small cross-sections with rapid quenching post-solution treatment and aging. Larger cross-sections and/or delayed quenching may yield suboptimal properties.
HardnessIn the annealed state, typical hardness is Rockwell C 30-34, while in the solution treated and aged state, it is approximately Rockwell C 35-39.
Forgeability/Formability Introducing the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 - a marvel of engineering and metallurgy. This exceptional tube is forged at high temperatures, specifically 1,750°F (954°C) and finalized at 1,450°F (788°C), ensuring superior structural integrity and performance. Achieving optimal results requires a reduction of at least 35%, showcasing the resilience and durability of this premium product.
While the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 presents challenges in forming at room temperature, its annealed state allows for more complex operations. Bending and stretching can be executed up to temperatures of 1,200°F (649°C) without compromising its mechanical properties. For hot sizing or forming, creep forming is ideal, effectively performed at temperatures between 1,000 to 1,200°F (538 to 649°C).
Machinability Experience the precision of machining with the DAXUN Ti-6Al-4V Titanium Tube, Grade 5. Utilizing techniques akin to those for austenitic stainless steels, it demands slow speeds and high feeds. Excellent tool rigidity and the application of copious amounts of non-chlorinated cutting fluids ensure flawless machining results.
Weldability The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 exhibits excellent weldability, whether in annealed or solution and partially aged conditions. Aging is seamlessly accomplished during post-weld heat treatment.
To maintain the tube's integrity, precautions against contamination with oxygen, nitrogen, and hydrogen are crucial. Fusion welding is best performed in an inert gas-filled chamber or with an inert gas tail shield covering the molten metal and adjacent hot zones. Spot, seam, and flash welding can be executed without a protective atmosphere, ensuring versatility in various welding applications.
Special Considerations When handling the DAXUN Ti-6Al-4V Titanium Tube, Grade 5, it's essential to avoid contamination from hydrogen during improper pickling or from oxygen, nitrogen, and carbon absorption during forging, heat treating, or brazing. Such contaminants can impair ductility and affect notch sensitivity and formability, highlighting the need for meticulous handling and processing.
