Daxun Alloy's pure titanium Grade 1 titanium tubes include:
seamless titanium tubes and welded titanium tubes, which boast outstanding ductility and cold formability, making them perfect for deep drawing applications. Grade 1 titanium tubes are renowned for their excellent general and seawater corrosion resistance, as well as their superior resistance to oxidizing, neutral, and slightly reducing media (solutions), including chlorides.
Titanium's low density-about half that of nickel-based alloys-combined with its high strength, light weight, and corrosion resistance, makes it an exceptional choice for a wide range of harsh chemical environments. These tubes adhere to execution standards such as 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 is the most commonly used titanium tube for industrial applications, offering a superb balance of moderate strength and reasonable ductility. It provides exceptional corrosion resistance in both highly oxidizing and slightly reducing conditions, including chlorides. It is ideal for the chemical and offshore industries, as well as aircraft manufacturing, where strength and ease of forming are essential. Additionally, it is utilized in heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and pipes.
Fabrication
Titanium Grade 2 responds excellently to cold forming using standard methods. It can be readily machined, but special care must be taken to maintain sharp tools and use liberal amounts of coolant. Similar to machining austenitic stainless steels, cuts should be deep and continuous with slow feeds and speeds.
Stock Availability
Daxun Alloys stocks CP 2 Grade Titanium Seamless and Welded Pipes in a wide variety of sizes.
Weight Reduction
CP 2 grade titanium tubes feature low density and a high strength-to-weight ratio, making them ideal for applications that require weight reduction without compromising overall strength. They are cold formable, possess good ductility, and can be welded using conventional TIG and MIG processes, though it is imperative to use inert gas shielding to prevent embrittlement of the weld zone.
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 transforms to a beta (body-centered cubic) structure. This transformation temperature can be altered based on the type and amount of impurities or alloying additions. The addition of alloying elements also divides 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 stages. These titanium seamless tubes maintain continuous perimeters throughout the manufacturing process. The de novo manufacturing of titanium seamless tubes primarily 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 meticulously crafted from annealed flat-rolled steel plate or steel strip using advanced automatic arc welding (TIG) technology. The comprehensive production process encompasses: 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. To ensure superior quality, welded pipes undergo at least one stress relief heat treatment after forming and welding. Remarkably, Daxun refrains from using any filler materials during the welding process, guaranteeing unmatched integrity and performance.
Ti-6Al-4V Titanium Pipe - Renowned Grade 5 Titanium TubeTitanium Alloy - (UNS R56400)
Introduction
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400) stands as the preeminent titanium alloy, celebrated for its duplex alpha+beta titanium composition, with aluminum as the alpha stabilizer and vanadium as the beta stabilizer. This high-strength marvel retains its properties at temperatures as low as 800°F (427°C). ATI Ti-6Al-4V, Grade 5 alloy excels in annealing, solution treating, and aging. It finds critical applications in compressor blades, disks, and rings for jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and pivotal forgings demanding a high strength-to-weight ratio.
The alloy's initial melting is executed using vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). The remelting phase involves one or two meticulous vacuum arc steps, ensuring ultimate purity and consistency.
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 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: 1830°F (± 25°); 999°C (± 14°)
Heat Treatment For applications requiring exceptional hardness, tensile strength, and fatigue strength, it is annealed at 1,700-1,900°F (927 - 1,038°C).
DAXUN 6-4 Grade 5 Titanium Tube offers versatile heat treatment options to meet diverse application needs.
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 Achieving optimal properties is highly dependent on the size of the cross-sections and the rapidity of quenching in the solution treated and aged condition. Larger cross-sections or delayed quenching can result in suboptimal properties.
HardnessIn its annealed condition, the typical hardness ranges from Rockwell C 30-34, while in the solution treated and aged condition, it reaches approximately Rockwell C 35-39.
Forgeability/Formability DAXUN Ti-6Al-4V Titanium Tube: Our premium Grade 5 Titanium Tube is meticulously forged at a precise temperature of 1,750°F (954°C) and finalized at 1,450°F (788°C). To achieve optimal results, a reduction rate of at least 35% is strongly advised.
DAXUN Ti-6Al-4V Titanium Tube: Recognized for its superior quality, our Grade 5 Titanium Tube presents challenges in cold forming, even after annealing. For severe forming operations like bending or stretching, the annealed material can be worked at elevated temperatures up to 1,200°F (649°C) without altering its mechanical integrity. Creep forming is also an effective method for hot sizing or shaping, within a temperature range of 1,000 to 1,200°F (538 to 649°C).
Machinability DAXUN Ti-6Al-4V Titanium Tube: Expertly engineered for machining, our Grade 5 Titanium Tube can be processed using techniques similar to those for austenitic stainless steels. Employ slow speeds, high feeds, robust tool rigidity, and ample use of non-chlorinated cutting fluids to ensure precision and efficiency.
Weldability DAXUN Ti-6Al-4V Titanium Tube: Our Grade 5 Titanium Tube is highly weldable in both annealed and solution-treated, partially aged states. The aging process is
completed during post-weld heat treatment. It's critical to prevent contamination by oxygen, nitrogen, and hydrogen. Fusion welding is best executed in an inert gas-filled chamber or with an inert gas tail shield over the molten and adjacent hot zones. Techniques like spot welding, seam welding, and flash welding can be performed without a protective atmosphere.
Special Considerations DAXUN Ti-6Al-4V Titanium Tube: Attention to detail is paramount when handling Grade 5 Titanium Tube to prevent hydrogen contamination from improper pickling and the absorption of oxygen, nitrogen, and carbon during processes such as forging, heat treating, and brazing. Such contamination can compromise ductility and increase notch sensitivity and formability.
