Daxun Alloy's Pure Titanium Grade 1 Tubes Include:
Seamless titanium tubes and welded titanium tubes, featuring remarkable ductility and cold formability, are perfect for deep drawing. Grade 1 titanium tubes are renowned for their outstanding general and seawater corrosion resistance and exceptional resilience against oxidizing, neutral, and slightly reducing media (solutions), including chlorides.
Titanium's low density (approximately half that of nickel-based alloys), combined with its high strength, lightweight nature, and excellent corrosion resistance, makes it an ideal choice for a range of challenging chemical environments. The execution standards for our titanium tubes include: 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)
This titanium tube is widely utilized in industrial applications, offering a perfect balance of moderate strength and reasonable ductility. It provides excellent corrosion resistance in highly oxidizing and slightly reducing conditions (including chlorides). Its robust corrosion protection makes it ideal for the chemical and offshore industries, as well as aircraft manufacturing, where strength and formability are critical. Additionally, it is used in 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 methods. It is easily machined, but maintaining sharp tools and the liberal use of coolant is crucial. Similar to machining austenitic stainless steels, deep and continuous cuts with slow feeds and speeds are recommended.
Stock Availability
Daxun Alloys maintains a diverse stock 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 perfect for applications requiring weight reduction without compromising overall strength. They exhibit good ductility, are cold formable, and can be welded using traditional TIG and MIG processes. However, inert gas shielding is necessary to prevent embrittlement of the weld zone.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tubes possess an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. At approximately 885°C (1625°F), they transform into a beta (body-centered cubic) structure. This transformation temperature can vary depending on the type and amount of impurities or alloying additions. Alloying elements can also separate the single temperature of the equilibrium transformation into two temperature zones: the alpha transformation zone, below which the alloy is entirely alpha, and the beta transformation zone, above which the alloy is entirely 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 crafted from hollow blanks through a hot extrusion process or an oblique rolling and piercing process, followed by multiple cold rolling processes. Titanium seamless tubes maintain continuous perimeters throughout all manufacturing stages. The comprehensive manufacturing 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 exemplifies exceptional craftsmanship, produced from annealed flat-rolled steel plate or strip using the advanced automatic arc welding (TIG) process. Key production stages include: uncoiling titanium plate, 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, the pipes undergo a mandatory stress relief heat treatment to ensure durability. Notably, Daxun maintains a stringent process, eschewing the use of any filler materials during welding.
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 out as the most sought-after titanium alloy. This duplex alpha+beta alloy leverages aluminum as the alpha stabilizer and vanadium as the beta stabilizer, providing high strength and usability at temperatures as low as 800°F (427°C). ATI Ti-6Al-4V, Grade 5 alloy is ideal for annealing, solution treating, and aging processes. Its versatility spans across applications such as compressor blades, disks, and rings for jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and critical forgings requiring a superior strength-to-weight ratio.
This alloy is initially melted using advanced techniques including vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Subsequent remelting is conducted through one or two vacuum arc steps, ensuring the highest quality and purity.
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
For optimal hardness, tensile strength, and fatigue resistance, the alloy is annealed at temperatures ranging from 1,700-1,900°F (927 - 1,038°C).
The versatile DAXUN 6-4 Grade 5 Titanium Tube is amenable to various heat treatment methodologies.
1. Annealing: 1,275 -1,400°F (691 - 760°C) for ½ to 2 hours, followed by air or furnace cooling.
2. Stress Relief Annealing: 1,000 -1,200°F (538 - 649°C) for 1 to 8 hours, followed by air or furnace cooling.
3. Solution Heat Treating: 1,675 -1,750°F (913 - 954°C) for 1 hour, followed by water quenching.
4. Aging: 975 -1,025°F (524 - 552°C) for 4 to 8 hours, followed by air cooling.
Optimum Properties
Optimal properties are achieved with small cross-sections through rapid quenching in the solution treated and aged condition. Larger cross-section sizes and/or delayed quenching may yield suboptimal properties.
Hardness
In the annealed condition, typical hardness ranges from Rockwell C 30-34, while the solution treated and aged condition exhibits a hardness of approximately Rockwell C 35-39.
Forgeability/Formability
Experience the exceptional quality of DAXUN's Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube. Expertly forged at 1,750°F (954°C) and achieving its final form at 1,450°F (788°C), we recommend a minimum reduction of 35% to ensure the finest results. Trust in DAXUN for unparalleled strength and precision.
Discover the precision of DAXUN's Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, designed for challenging forming operations. Despite its difficulty to form at room temperature-even when annealed-our titanium tube excels under severe conditions. Perform operations like bending or stretching at up to 1,200°F (649°C) without compromising on mechanical properties. Furthermore, rely on creep forming for hot sizing or forming between 1,000 to 1,200°F (538 to 649°C) to achieve optimal results.
Machinability
DAXUN's Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is engineered for superior machinability. Employ machining methods akin to those used for austenitic stainless steels, ensuring slow speeds, high feeds, and robust tool rigidity. Utilize generous amounts of non-chlorinated cutting fluids to achieve the best machining outcomes.
Weldability
DAXUN's Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube offers exceptional weldability, whether in the annealed condition or after solution and partial aging. Enhance its properties through post-weld heat treatment while taking care to prevent contamination with oxygen, nitrogen, and hydrogen.
Complete the welding process with precision by using inert gas-filled chambers or inert gas tail shields to protect the molten metal and nearby hot zones. Techniques such as spot welding, seam welding, and flash welding can be performed without the need for a protective atmosphere, ensuring versatility and reliability in your applications.
Special Considerations
When working with DAXUN's Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, be mindful of potential contamination from hydrogen due to improper pickling, as well as the absorption of oxygen, nitrogen, and carbon during forging, heat treating, and brazing. Such contamination can reduce ductility and negatively impact notch sensitivity and formability. Exercise caution to maintain the exceptional quality and performance of our titanium tubes.
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