Daxun Alloy's pure titanium Grade 1 titanium tubes include:
Our seamless and welded titanium tubes boast exceptional ductility and cold formability, making them perfect for deep drawing applications. Grade 1 titanium tubes are renowned for their outstanding general and seawater corrosion resistance, as well as their excellent resistance to oxidizing, neutral, and slightly reducing media (including chlorides).
Titanium's impressive low density-approximately half that of nickel-based alloys-coupled with its high strength, light weight, and superb corrosion resistance, positions it as the premier choice for a myriad of demanding chemical environments. Compliance standards include: 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)
Frequently chosen for industrial applications, Grade 2 titanium tube strikes an ideal balance between moderate strength and good ductility. This grade excels in corrosion resistance, both in highly oxidizing and slightly reducing environments (including chlorides). It's the go-to material for the chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and piping systems.
Fabrication
Titanium Grade 2 readily adapts to cold forming using conventional methods. It is easily machined, provided that sharp tools and ample coolant are maintained. Similar to machining austenitic stainless steels, deep and continuous cuts with slow feeds and speeds yield the best results.
Stock Availability
Daxun Alloys maintains a diverse inventory of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes.
Weight Reduction
CP 2 grade titanium tubes are characterized by their low density and high strength-to-weight ratio, making them ideal for applications demanding weight reduction without compromising strength. These tubes are cold formable, possess good ductility, and can be welded using standard TIG and MIG processes, though inert gas shielding is necessary to prevent embrittlement in the weld zone.
Crystal Structure
At ambient temperatures, ASTM B338 Grade 2 titanium tube exhibits an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. Around 885°C [1625°F], it transitions to a beta (body-centered cubic) structure. This transformation temperature fluctuates depending on the type and amount of alloying elements involved. Alloy additions also alter the transformation temperature, creating distinct alpha and beta zones: the alpha transformation zone below which the alloy is purely alpha, and the beta transformation zone above which the alloy is entirely beta. In the intermediate temperature range, both alpha and beta phases 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 expertly crafted from hollow blanks through hot extrusion or oblique rolling and piercing, followed by multiple cold rolling processes. Throughout the production stages, titanium seamless tubes maintain continuous perimeters. The comprehensive manufacturing sequence includes: sponge titanium vacuum arc melting, ingot blanking to create hollow blanks, cleaning, cutting, feeding, hot extrusion or oblique rolling and piercing, degreasing, drying, cutting, online annealing and straightening, pickling, multiple cold rolling phases, 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 stands as a testament to precision engineering and advanced material science. Crafted meticulously from annealed flat-rolled steel plate or steel strip, it employs the sophisticated automatic arc welding (TIG) process. The production journey encompasses several critical stages: uncoiling the titanium plate, precise shearing, butt welding, thorough 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. Notably, every welded pipe undergoes at least one stress relief heat treatment post forming and welding, ensuring unrivaled durability and performance. Daxun expertly incorporates filler materials during the welding process to achieve impeccable joins.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium Tube: The Pinnacle of Strength and Versatility
Titanium Alloy - (UNS R56400): Achieving New Heights in Material Innovation
Introduction
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400) represents the zenith of titanium alloys. This duplex alpha+beta titanium alloy ingeniously combines aluminum as the alpha stabilizer and vanadium as the beta stabilizer. Known for its formidable strength, it thrives at low temperatures around 800°F (427°C). ATI Ti-6Al-4V, Grade 5 is versatile, ideal for annealing, solution treating, and aging. Its applications are vast, including compressor blades, disks, and rings for jet engines, fuselage and space capsule components, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and critical forgings that demand a high strength-to-weight ratio.
The alloy's initial melting phase leverages advanced techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Subsequent remelting is accomplished through one or two additional vacuum arc steps, ensuring superior purity and consistency.
Specifications
• ASTE B338 - Standard for Heat Treatable Titanium Tubes, ensuring high-performance and reliability.
• AMS 4928 - Forgings and Forging Stock (Annealed), setting the benchmark for material quality.
• AMS 4965 - Forgings (Solution Treated and Aged), providing enhanced mechanical properties.
• AMS 4967 - Forgings (Annealed, Heat Treatable), designed for optimal performance.
Physical Properties
Ti-6Al-4V Titanium Tube boasts a melting range of 2,800-3,000°F (1,538 - 1,649°C), showcasing its impressive thermal resilience.
Density: A robust 0.160 lb/in3; 4.47 g/cm3, highlighting its lightweight yet durable nature.
Beta Transus Temperature: Precisely 1830°F (± 25°); 999°C (± 14°), critical for phase transformation control.
Heat Treatment
Annealed at 1,700-1,900°F (927 - 1,038°C), ensuring maximum hardness, tensile strength, and fatigue resistance.
DAXUN 6-4 Grade 5 Titanium Tube can undergo diverse heat treatments to meet specific application needs.
1. Annealing: At temperatures of 1,275-1,400°F (691-760°C) for ½ to 2 hours, followed by air or furnace cooling, achieving a balanced microstructure.
2. Stress Relief Annealing: Conducted at 1,000-1,200°F (538-649°C) for durations between 1 to 8 hours, with air or furnace cooling, to alleviate residual stresses.
3. Solution Heat Treating: At 1,675-1,750°F (913-954°C) for 1 hour, with a water quench to lock in the desired microstructure.
4. Aging: Performed at 975-1,025°F (524-552°C) for 4 to 8 hours, followed by air cooling to stabilize properties.
Optimum Properties
Achieving optimal properties depends on rapid quenching of small cross-sections in the solution treated and aged condition. Larger cross-sections and delayed quenching may lead to suboptimal properties.
Hardness
Typical hardness values are Rockwell C 30-34 in the annealed condition and approximately Rockwell C 35-39 in the solution treated and aged condition, reflecting its robust nature.
Forgeability/Formability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is meticulously forged at a precise temperature of 1,750°F (954°C) with a final forging phase at 1,450°F (788°C). For optimal results, a reduction of at least 35% is highly recommended, ensuring the highest quality and performance.
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube presents challenges when forming at room temperature, even post-annealing. However, severe forming operations such as bending or stretching can be effectively executed on the annealed material at elevated temperatures up to 1,200°F (649°C) without altering its mechanical properties. Creep forming is an excellent technique for hot sizing or forming within the temperature range of 1,000 to 1,200°F (538 to 649°C).
Machinability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube can be precisely machined using techniques suitable for austenitic stainless steels. Employ slow speeds, high feeds, ensure robust tool rigidity, and utilize copious amounts of non-chlorinated cutting fluids for the best machining outcomes.
Weldability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube boasts excellent weldability in both annealed and solution-treated, partially aged conditions, with aging.
completed during post-weld heat treatment. It is imperative to take precautions against contamination by oxygen, nitrogen, and hydrogen. Fusion welding should be conducted in an inert gas-filled chamber or with an inert gas tail shield to protect the molten metal and adjacent hot zones. Spot welding, seam welding, and flash welding can be performed without a protective atmosphere.
Special Considerations
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is susceptible to contamination by hydrogen during improper pickling and by oxygen, nitrogen, and carbon during forging, heat treating, brazing, etc. Such contamination can severely reduce ductility and negatively impact notch sensitivity and formability. Proper handling and treatment are essential to maintain the integrity of the material.
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