Daxun Alloy's pure titanium Grade 1 titanium tubes include:
Our product lineup boasts seamless and welded titanium tubes, renowned for their extraordinary ductility and cold formability, making them quintessential for deep drawing applications. Grade 1 titanium tubes offer unparalleled general corrosion resistance and are especially effective against seawater corrosion. They exhibit exceptional resilience against oxidizing, neutral, and mildly reducing media, including chloride solutions.
Titanium's low density-approximately half that of nickel-based alloys-combined with its high strength, light weight, and superior corrosion resistance, makes it an exceptional choice for enduring harsh chemical environments. Adherence to standards is rigorous, 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 an ideal balance of moderate strength and reasonable ductility. Their robust corrosion resistance performs excellently in both highly oxidizing and mildly reducing environments, including chloride exposure. These tubes excel in the chemical and offshore industries and are key components in aircraft manufacturing, where strength and formability are paramount. They are also integral to heat exchangers, hypochlorite systems, fire water systems, ballast water systems, CPI equipment, and a variety of industrial and aerospace components.
Fabrication
Titanium Grade 2 is highly responsive to cold forming, utilizing standard methodologies. Machining is straightforward but requires meticulous attention to tool sharpness and liberal coolant application. Comparable to machining austenitic stainless steels, cuts should be executed with depth, continuity, and controlled feeds and speeds.
Stock Availability
Daxun Alloys maintains an extensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in various dimensions.
Weight Reduction
CP 2 Grade titanium tubes are characterized by their low density and high strength-to-weight ratio, making them ideal for applications requiring weight reduction without compromising strength. These tubes exhibit excellent cold formability and ductility and can be welded using conventional TIG and MIG processes, given that inert gas shielding is employed to avert weld zone embrittlement.
Crystal Structure
At ambient temperature, ASTM B338 Grade 2 titanium tubes feature an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. At approximately 885°C (1625°F), a transformation occurs to a beta (body-centered cubic) structure. Depending on impurities or alloying elements, this transformation temperature can be altered. Alloying additions can also bifurcate the single equilibrium transformation temperature into two distinct zones: the alpha transformation zone and the beta transformation zone. For Grade 2 titanium, the 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 through hot extrusion or oblique rolling and piercing, followed by several cold rolling phases. Each stage ensures continuous perimeters. The comprehensive manufacturing process includes vacuum arc melting of sponge titanium, blanking for hollow blanks, cleaning, cutting, and feeding, hot extrusion or oblique rolling, piercing, degreasing, drying, cutting, online annealing, straightening, pickling, multiple cold rolling, degreasing, drying, vacuum annealing, straightening, cutting, pickling, final inspection, DAXUN marking, 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 steel strips through an advanced automatic arc welding (TIG) process. Our comprehensive production procedures include: 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 to ensure optimum performance. Notably, Daxun's welding process does not incorporate any filler materials, maintaining the purity and integrity of the titanium.
Ti-6Al-4V Titanium Pipe - Premium Grade 5 Titanium TubeTitanium Alloy - High-Performance (UNS R56400)
Introduction
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400), stands as the pinnacle of titanium alloys, renowned for its superior strength and versatility. As a duplex alpha+beta titanium alloy, it utilizes aluminum as the alpha stabilizer and vanadium as the beta stabilizer, delivering unmatched high-strength performance even at low temperatures around 800°F (427°C). This esteemed alloy excels in applications requiring annealing, solution treating, and aging, making it an ideal choice for critical components such as compressor blades, disks, and rings for jet engines, fuselage and space capsule parts, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and high strength-to-weight ratio forgings.
The alloy's initial melting involves sophisticated techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Subsequent remelting is achieved via one or two vacuum arc steps, ensuring impeccable material purity and consistency.
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: An impressive 2,800-3,000°F (1,538 - 1,649°C)
Density: Lightweight yet robust at 0.160 lb/in³; 4.47 g/cm³
Beta Transus Temperature: Precisely 1,830°F (± 25°); 999°C (± 14°)
Heat Treatment Annealed at high temperatures of 1,700-1,900°F (927 - 1,038°C) to achieve superior hardness, tensile strength, and fatigue resistance.
DAXUN 6-4 Grade 5 Titanium Tube presents versatile heat treatment capabilities.
1. Annealing: Conducted at 1,275 -1,400°F; (691 - 760°C) for ½ to 2 hours, followed by air or furnace cooling.
2. Stress Relief Annealing: Performed at 1,000 -1,200°F; (538 - 649°C) for 1 to 8 hours, with air or furnace cooling.
3. Solution Heat Treating: Executed at 1,675 -1,750°F; (913 - 954°C) for 1 hour, followed by water quenching.
4. Aging: Carried out at 975 -1,025°F; (524 - 552°C) for 4 to 8 hours, followed by air cooling.
Optimum Properties Achieve optimal properties with rapid quenching for small cross-sections in the solution treated and aged condition. Note that larger cross-sections and delayed quenching may result in less optimal properties.
HardnessExpect typical hardness levels of Rockwell C 30-34 in the annealed state and Rockwell C 35-39 in the solution and aged condition.
Forgeability/Formability Experience the outstanding capabilities of DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium. Forged at an impressive 1,750°F (954°C) with a final forging temperature of 1,450°F (788°C), it is recommended to achieve a minimum reduction of 35% for optimal performance.
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium is engineered for resilience. Despite its difficulty to form at room temperature, even in its annealed state, it can endure severe forming operations, such as bending or stretching, at temperatures up to 1,200°F (649°C) without compromising its mechanical integrity. For hot sizing or forming, creep forming is recommended at temperatures between 1,000 and 1,200°F (538 to 649°C).
Machinability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium stands out in machinability. Employ standard methods used for austenitic stainless steels, including slow speeds, high feeds, robust tool rigidity, and generous amounts of non-chlorinated cutting fluids.
Weldability The weldability of DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium is exceptional. It can be welded efficiently in both annealed and solution-treated, partially aged states.
Post-weld heat treatment facilitates the aging process. To prevent contamination with oxygen, nitrogen, and hydrogen, fusion welding should be performed in an inert gas-filled chamber or using an inert gas tail shield over the molten metal and nearby hot zones. Spot welding, seam welding, and flash welding do not require a protective atmosphere.
Special Considerations When working with DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium, ensure proper handling to avoid hydrogen contamination from improper pickling and the absorption of oxygen, nitrogen, and carbon during forging, heat treating, and brazing. Such contamination might reduce ductility and negatively impact notch sensitivity and formability.
