Daxun Alloy's premium pure titanium Grade 1 titanium tubes include:
seamless titanium tubes and welded titanium tubes. Known for their superior ductility and cold formability, they are perfect for deep drawing applications. Grade 1 titanium tubes stand out for their exceptional general and seawater corrosion resistance, and their extraordinary resilience against oxidizing, neutral, and slightly reducing media (solutions), including chlorides.
Titanium boasts a low density, roughly half that of nickel-based alloys, coupled with high strength, light weight, and outstanding corrosion resistance. This makes it a top choice for various stringent chemical conditions. Execution standards: 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 industrial titanium tube strikes a perfect balance between moderate strength and excellent ductility. It excels in corrosion resistance under highly oxidizing and slightly reducing conditions, including chlorides. Its robust performance extends across the chemical, offshore, and aerospace industries, as well as in aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, CPI equipment, and piping solutions where strength and formability are crucial.
Fabrication
Titanium Grade 2 is highly amenable to cold forming through standard methods. It is readily machinable, requiring sharp tools and ample coolant. Similar to machining austenitic stainless steels, deep and continuous cuts with slow feeds and speeds are recommended.
Stock Availability
Daxun Alloys proudly offers CP 2 Grade Titanium Seamless and Welded Pipes in a versatile array of sizes.
Weight Reduction
CP 2 grade titanium tubes are characterized by their low density and high strength-to-weight ratio, ideal for weight-sensitive applications without compromising strength. These tubes are cold formable, exhibit good ductility, and can be welded using conventional TIG and MIG processes, requiring inert gas shielding to prevent weld zone embrittlement.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tube features an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. Near 885°C (1625°F), it transitions to a beta (body-centered cubic) structure. Impurities or alloying elements can shift this transformation temperature. These elements also segment the equilibrium transformation temperature into alpha and beta zones, defining the material's structural phase. Typical alpha and beta transformation temperatures for grade 2 titanium are approximately 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 begin with hollow blanks formed via hot extrusion or oblique rolling and piercing. This is followed by multiple cold rolling stages. Each manufacturing step ensures continuous perimeter formation. Key stages include: sponge titanium vacuum arc melting, ingot blanking for hollow blanks, cleaning, cutting, feeding, hot extrusion or oblique rolling and piercing, degreasing, drying, cutting, online annealing, 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 crafted from annealed flat-rolled steel plate or steel strip, employing the meticulous automatic arc welding (TIG) process. The principal production stages 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. All welded pipes undergo at least one stress relief heat treatment post-forming and welding. Daxun ensures the welding process is executed without the use of any filler materials.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium TubeTitanium Alloy - (UNS R56400)
Introduction
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400) stands as the most sought-after titanium alloy. This duplex alpha+beta titanium alloy incorporates aluminum as the alpha stabilizer and vanadium as the beta stabilizer. Boasting high strength, it performs exceptionally at temperatures as low as 800°F (427°C). Renowned for its impeccable properties, the ATI Ti-6Al-4V, Grade 5 alloy is utilized in annealing, solution treating, and aging processes. It's the preferred choice for compressor blades, disks, and rings in jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and critical forgings demanding a high strength-to-weight ratio.
The alloy's initial melting is achieved using advanced techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Subsequent remelting involves one or two stages of vacuum arc steps to ensure optimal material homogeneity.
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: 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 Annealed at 1,700-1,900°F (927 - 1,038°C) when high hardness, tensile strength, and fatigue strength are required.
DAXUN 6-4 Grade 5 Titanium Tube can undergo various heat treatment processes, tailored for optimal performance.
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 involves rapid quenching of small cross-sections in the solution treated and aged condition. Larger cross-section sizes and delayed quenching may yield less than optimal characteristics.
HardnessIn the annealed condition, typical hardness ranges from Rockwell C 30-34, while in the solution and aged condition, it approximates Rockwell C 35-39.
Forgeability/Formability The DAXUN Ti-6Al-4V Titanium Tube, also known as the Grade 5 Titanium Tube, embodies advanced engineering with its forging conducted at an impressive 1,750°F (954°C) and final forging temperature of 1,450°F (788°C). To achieve optimal results, a reduction rate of at least 35% is highly recommended.
When it comes to forming, the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube poses challenges at room temperature, even when annealed. However, for rigorous forming operations such as bending or stretching, the annealed material can be manipulated at elevated temperatures up to 1,200°F (649°C) without altering its mechanical properties. For tasks like hot sizing or forming, creep forming is ideal within the temperature range of 1,000 to 1,200°F (538 to 649°C).
Machinability The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube can be expertly machined using techniques akin to those for austenitic stainless steels. Optimal machining involves slow speeds, high feeds, and robust tool rigidity, along with the generous application of non-chlorinated cutting fluids to ensure precision and efficiency.
Weldability The remarkable weldability of the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube makes it suitable for joining in both annealed and solution-treated, partially aged conditions. Aging is seamlessly achieved during post-weld heat treatment.
To prevent contamination during welding, stringent precautions are necessary to avoid exposure to oxygen, nitrogen, and hydrogen. Fusion welding should be performed within an inert gas-filled chamber or with the use of an inert gas tail shield over the molten and adjacent hot zones. Additionally, processes like spot welding, seam welding, and flash welding can be executed without requiring a protective atmosphere.
Special Considerations The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube requires careful handling to avoid contamination from hydrogen due to improper pickling, as well as the absorption of oxygen, nitrogen, and carbon during processes like forging, heat treating, and brazing. Such contamination can detrimentally affect ductility, notch sensitivity, and formability, underscoring the necessity for meticulous process controls.