Daxun Alloy's Pure Grade 1 Titanium Tubes Include:
Our seamless and welded titanium tubes boast exceptional ductility and cold formability, making them ideal for deep drawing applications. Renowned for their superior general and seawater corrosion resistance, these Grade 1 titanium tubes also offer excellent protection against oxidizing, neutral, and slightly reducing media, including chlorides.
With a remarkably low density (approximately half that of nickel-based alloys), high strength, lightweight, and outstanding corrosion resistance, titanium is the perfect choice for challenging chemical environments. Adhering to high standards, we comply with the following: 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)
Widely recognized as the titanium tube of choice for industrial applications, Grade 2 titanium offers an exceptional balance of moderate strength and impressive ductility. It excels in corrosive environments, both highly oxidizing and slightly reducing, including chlorides. Its robust corrosion protection capabilities make it invaluable in chemical and offshore industries, aircraft manufacturing, and heat exchangers, as well as hypochlorite systems, fire water systems, ballast water systems, and many industrial and aerospace components, CPI equipment, and pipes.
Fabrication
Titanium Grade 2 is highly responsive to cold forming using conventional methods and can be easily machined. It is crucial to maintain sharp tools and generously apply coolant. Similar to machining austenitic stainless steels, cuts should be deep and continuous, employing slow feeds and speeds.
Stock Availability
Daxun Alloys maintains a comprehensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes available in various sizes.
Weight Reduction
Featuring a low density and a commendable strength-to-weight ratio, CP 2 grade titanium tubes are ideally suited for applications demanding weight reduction without compromising strength. These tubes are cold formable, exhibit good ductility, and can be welded using standard TIG and MIG processes with inert gas shielding to prevent embrittlement in the weld zone.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tubes exhibit an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. At around 885°C (1625°F), they transform into a beta (body-centered cubic) structure. The transformation temperature can vary based on impurities or alloying elements. The addition of alloying elements divides the equilibrium transformation into 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 meticulously crafted from hollow blanks through hot extrusion or oblique rolling and piercing processes, followed by multiple cold rolling stages. These tubes maintain continuous perimeters throughout manufacturing. The production 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 stages, degreasing, drying, vacuum annealing, straightening, final cutting, pickling, thorough inspection, marking (DAXUN), and packaging.
Grade 2 Titanium Welded Pipe Manufacturing Process
Daxun's ASTM B338 Grade 2 titanium welded pipe is meticulously manufactured from annealed flat-rolled steel plate or steel strip using the advanced automatic arc welding (TIG) process. Our comprehensive production process encompasses: titanium plate uncoiling, precision shearing, meticulous butt welding, thorough cleaning, precision pipe forming, TIG welding, rigorous eddy current testing, pre-sizing, precision annealing, precision reducing and sizing, straightening, secondary eddy current testing, precise caliper marking, accurate cutting, ultrasonic testing, hydrostatic testing, final inspection, and secure packaging. Each welded pipe undergoes a mandatory stress relief heat treatment after forming and welding. At Daxun, no filler materials are introduced during the welding process, ensuring the highest integrity and performance.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium TubeTitanium Alloy - (UNS R56400)
Introduction
DAXUN's Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400) is renowned as the most popular titanium alloy. This exceptional duplex alpha+beta titanium alloy utilizes aluminum as the alpha stabilizer and vanadium as the beta stabilizer, offering remarkable high-strength performance at low temperatures around 800°F (427°C). The ATI Ti-6Al-4V, Grade 5 alloy is adeptly utilized for annealing, solution treating, and aging processes. It finds extensive applications in the production of compressor blades, disks, and rings for jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and critical forgings that necessitate a high strength-to-weight ratio.
The alloy's initial melting is accomplished using state-of-the-art methods such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM), followed by one or two additional vacuum arc remelting steps to achieve optimal purity and quality.
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: 1,830°F (± 25°); 999°C (± 14°)
Heat Treatment When high hardness, tensile strength, and fatigue strength are required, DAXUN's Ti-6Al-4V Grade 5 Titanium Tube is expertly annealed at 1,700-1,900°F (927-1,038°C).
DAXUN's 6-4 Grade 5 Titanium Tube is versatile and can undergo various heat treatments.
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 Maximum properties are achieved with small cross sections and rapid quenching in the solution-treated and aged condition. Larger cross sections or delayed quenching may result in less than optimal properties.
HardnessTypical hardness values for the annealed condition are Rockwell C 30-34, while the solution-treated and aged condition yields approximately Rockwell C 35-39.
Forgeability/Formability The DAXUN Ti-6Al-4V Titanium Tube, which is Grade 5, showcases exceptional forging characteristics. It is ideally forged at temperatures of 1,750°F (954°C) with a finishing forging temperature of 1,450°F (788°C). For optimal results, a reduction of at least 35% is highly recommended.
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, presents challenges when forming at room temperature, even post-annealing. However, intense forming operations like bending or stretching can be effectively performed on the annealed tube at elevated temperatures up to 1,200°F (649°C) without compromising its mechanical integrity. Additionally, creep forming is an excellent method for hot sizing or forming, operating efficiently between 1,000 to 1,200°F (538 to 649°C).
Machinability The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is amenable to machining using techniques similar to those applied to austenitic stainless steels. Optimal machining requires slow speeds, high feeds, robust tool rigidity, and a substantial application of non-chlorinated cutting fluids to ensure precision.
Weldability The DAXUN Ti-6Al-4V Titanium Tube Grade 5 is highly weldable in both annealed and solution-treated, partially aged conditions, with post-weld aging enhancing its properties.
To prevent contamination by oxygen, nitrogen, and hydrogen, strict precautions must be observed. Fusion welding can be achieved in an inert gas-filled environment or by using an inert gas tail shield over the molten weld and adjacent hot areas. Additionally, spot welding, seam welding, and flash welding can be performed effectively without a protective atmosphere.
Special Considerations It is crucial to avoid hydrogen contamination in the DAXUN Ti-6Al-4V Titanium Tube, Grade 5, which can occur due to improper pickling or from the absorption of oxygen, nitrogen, and carbon during processes like forging, heat treating, and brazing. Such contamination can significantly reduce ductility, negatively affecting notch sensitivity and formability.