Daxun Alloy's Pure Titanium Grade 1 Tubes Include:
Our seamless and welded titanium tubes excel in ductility and cold formability, making them perfect for deep drawing applications. The Grade 1 titanium tubes offer outstanding general and seawater corrosion resistance, as well as exceptional resistance to oxidizing, neutral, and slightly reducing media (solutions) including chlorides.
Thanks to its low density (approximately half that of nickel-based alloys), high strength, lightweight nature, and corrosion resistance, titanium is an ideal choice for various rigorous chemical environments. The execution standards adhered to are: 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-used titanium tube is renowned for its ideal combination of moderate strength and reasonable ductility. It boasts excellent corrosion resistance under both highly oxidizing and slightly reducing conditions, including chlorides. This makes it perfect for the chemical and offshore industries, as well as aircraft manufacturing where strength and formability are crucial. Additionally, it is widely used in heat exchangers, hypochlorite systems, fire water and ballast water systems, industrial and aerospace components, CPI equipment, and piping.
Fabrication
Titanium Grade 2 is highly responsive to cold forming using standard techniques. It can be easily machined, provided that sharp tools are used and ample coolant is applied. Similar to austenitic stainless steels, machining cuts should be deep and continuous, with slow feed rates and speeds.
Stock Availability
Daxun Alloys maintains a comprehensive stock of CP 2 Grade Titanium Seamless and Welded Pipes in diverse sizes to meet various application needs.
Weight Reduction
CP 2 grade titanium tubes are distinguished by their low density and superior strength-to-weight ratio, making them perfect for applications demanding weight reduction without compromising overall strength. They are easily cold formable, possess good ductility, and can be welded using conventional TIG and MIG processes, with inert gas shielding required to prevent weld zone embrittlement.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tube features 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 the type and amount of impurities or alloying elements present. The addition of alloying elements splits 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. For Grade 2 titanium, typical alpha and beta transformation temperatures 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 via hot extrusion or oblique rolling and piercing, followed by multiple cold rolling processes. These tubes maintain continuous perimeters throughout all manufacturing stages. The production process involves: sponge titanium vacuum arc melting, ingot blanking to obtain hollow blanks, cleaning, cutting and feeding; followed by hot extrusion, or oblique rolling and piercing; then 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 superior craftsmanship, fashioned from meticulously annealed flat-rolled steel plate or steel strip through the advanced automatic arc welding (TIG) process. The comprehensive production journey encompasses multiple stages: titanium plate uncoiling, shearing, butt welding, cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing, annealing, precision reducing and sizing, straightening, caliper marking, cutting, ultrasonic testing, hydrostatic testing, final inspection, and packaging. Each welded pipe undergoes stringent stress relief heat treatment post-formation and welding, ensuring optimal resilience and durability. Notably, Daxun implements premium filler materials throughout the welding process to enhance quality and performance.
Ti-6Al-4V Titanium Pipe - The Pinnacle of Grade 5 Titanium Tubes
Titanium Alloy - Unsurpassed Quality (UNS R56400)
Introduction
DAXUN Ti-6Al-4V Titanium Tube, renowned as Grade 5 (UNS R56400), is the most sought-after titanium alloy. This duplex alpha+beta titanium alloy incorporates aluminum as the alpha stabilizer and vanadium as the beta stabilizer, bestowing it with remarkable strength even at temperatures as low as 800°F (427°C). The ATI Ti-6Al-4V, Grade 5 alloy is tailored for annealing, solution treating, and aging, making it indispensable for 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 demanding an exceptional strength-to-weight ratio.
This exceptional alloy begins its journey with sophisticated vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM) processes. Subsequent remelting is meticulously carried out through one or two vacuum arc steps, ensuring unmatched purity and structural integrity.
Specifications
• ASTM B338 - Standard for Heat Treatable Titanium Tubes
• AMS 4928 - Superior Forgings and Forging Stock (Annealed)
• AMS 4965 - Premier Forgings (Solution Treated and Aged)
• AMS 4967 - High-Quality Forgings (Annealed, Heat Treatable)
Physical Properties
Ti-6Al-4V Titanium Tube Melting Range: 2,800-3,000°F (1,538 - 1,649°C)
Density: An impressive 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) for achieving high hardness, unparalleled tensile strength, and superior fatigue resistance.
DAXUN 6-4 Grade 5 Titanium Tube offers versatile heat treatment methods to meet diverse application needs.
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 a water quench.
4. Aging: 975 -1,025°F (524 - 552°C) for 4 to 8 hours, followed by air cooling.
Optimum Properties
Achieve peak properties in small cross sections with rapid quenching in the solution-treated and aged condition. For larger cross-sections and/or delay in quenching, expect less than optimal properties.
Hardness
Typical hardness ranges: Rockwell C 30-34 in the annealed condition, and approximately Rockwell C 35-39 in the solution-treated and aged condition.
Forgeability/Formability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5. This premium titanium tube undergoes precision forging at 1,750°F (954°C) with a final forging touch at 1,450°F (788°C). To achieve optimal results, a reduction of at least 35% is highly recommended, ensuring the utmost strength and durability.
DAXUN Ti-6Al-4V Titanium Tube, Grade 5. Forming this high-grade titanium at room temperature is challenging, even when annealed. For severe forming operations like bending or stretching, the material performs exceptionally well at elevated temperatures up to 1,200°F (649°C) without compromising its mechanical properties. Hot sizing or forming is efficiently executed through creep forming at temperatures between 1,000 and 1,200°F (538 to 649°C).
Machinability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5. This tube can be expertly machined using techniques suited for austenitic stainless steels. Employ slow speeds, high feeds, and ensure robust tool rigidity while utilizing ample amounts of non-chlorinated cutting fluids for precision results.
Weldability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5. This tube is highly weldable whether in the annealed state or under solution and partial aging conditions. The aging process is effectively completed during post-weld heat treatment.
Take essential precautions to prevent contamination from oxygen, nitrogen, and hydrogen. Execute fusion welding in an inert gas-filled chamber or apply an inert gas tail shield over the molten metal and adjacent hot zones. Spot welding, seam welding, and flash welding are all feasible without the necessity of a protective atmosphere.
Special Considerations
DAXUN Ti-6Al-4V Titanium Tube, Grade 5. Be vigilant about potential contamination from hydrogen during improper pickling and from oxygen, nitrogen, and carbon absorption during forging, heat treating, brazing, and similar processes. This contamination can detract from ductility, notch sensitivity, and formability, affecting overall performance.
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