Daxun Alloy's pure titanium Grade 1 titanium tubes include:
Our product range features seamless and welded titanium tubes that boast unparalleled ductility and cold formability, making them perfect for deep drawing. Renowned for their superior general and seawater corrosion resistance, Grade 1 titanium tubes offer exceptional resistance to oxidizing, neutral, and slightly reducing media, including chlorides.
With a low density (approximately half that of nickel-based alloys), alongside high strength and lightweight attributes, titanium stands out for its robust corrosion resistance, making it the material of choice in numerous severe chemical environments. Adhering to stringent 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)
Grade 2 titanium tubes are the go-to choice for industrial applications, striking an excellent balance between moderate strength and reasonable ductility. They are renowned for their outstanding corrosion resistance in both highly oxidizing and slightly reducing environments, including chlorides. These tubes provide superior protection in the chemical and offshore industries, as well as in aircraft manufacturing, where strength and formability are critical. Their versatility extends to heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and piping solutions.
Fabrication
Titanium Grade 2 is highly responsive to cold forming using standard techniques. It is easily machinable, but attention must be given to maintaining sharp tools and using plenty of coolant. Similar to machining austenitic stainless steels, the cutting process should involve deep, continuous cuts at slow feeds and speeds.
Stock Availability
Daxun Alloys maintains an extensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes, ready to meet diverse application needs.
Weight Reduction
CP 2 grade titanium tubes are characterized by their low density and excellent strength-to-weight ratio, making them ideal for applications prioritizing weight reduction without compromising strength. These tubes are cold formable, exhibit good ductility, and can be welded using conventional TIG and MIG processes, provided inert gas shielding is used to prevent weld zone embrittlement.
Crystal Structure
At ambient temperatures, ASTM B338 Grade 2 titanium tubes exhibit an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. Upon reaching approximately 885°C [1625°F], they transition to a beta (body-centered cubic) structure. This transformation temperature can vary with the type and amount of impurities or alloying elements. Alloying elements also bifurcate the single equilibrium transformation temperature into two distinct 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 zones, 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
Our ASTM B338 Grade 2 titanium seamless tubes are meticulously crafted from hollow blanks through either hot extrusion or oblique rolling and piercing, followed by multiple cold rolling stages. Throughout the manufacturing, the titanium seamless tubes maintain continuous perimeters. The comprehensive 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 rollings, 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 an advanced automatic arc welding (TIG) process. The comprehensive production stages include: uncoiling shearing, butt welding, cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing, annealing, precision reducing and sizing, straightening, final eddy current testing, caliper marking, cutting, ultrasonic testing, hydrostatic testing, final inspection, and packaging. Each welded pipe undergoes a crucial stress relief heat treatment post forming and welding to ensure optimal performance. Notably, Daxun employs high-quality filler materials throughout the welding process.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium TubeTitanium Alloy - (UNS R56400)
Introduction
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400), represents the pinnacle of titanium alloy innovation. This duplex alpha+beta titanium alloy incorporates aluminum as the alpha stabilizer and vanadium as the beta stabilizer, offering exceptional strength. It is capable of performing reliably at temperatures as low as 800°F (427°C). The ATI Ti-6Al-4V, Grade 5 alloy is ideal for critical applications including annealing, solution treating, and aging. It is indispensable in jet engine components such as compressor blades, disks, and rings; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and critical forgings requiring a high strength-to-weight ratio.
This superior alloy undergoes initial melting via vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM), followed by remelting in one or two vacuum arc steps to ensure the utmost 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 PropertiesThe Ti-6Al-4V Titanium Tube boasts a melting range of 2,800-3,000°F (1,538 - 1,649°C), ensuring excellent thermal stability.
With a density of 0.160 lb/in3 (4.47 g/cm3), this titanium tube offers a remarkable strength-to-weight ratio.
Beta Transus Temperature: 1,830°F (± 25°); 999°C (± 14°)
Heat Treatment When high hardness, tensile strength, and fatigue strength are critical, annealing at 1,700-1,900°F (927 - 1,038°C) is the optimal heat treatment for this alloy.
DAXUN's 6-4 Grade 5 Titanium Tube can undergo a variety of heat treatments to achieve desired mechanical properties.
1. Annealing: Carried out 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 subsequent air or furnace cooling.
3. Solution Heat Treating: Executed at 1,675 -1,750°F (913 - 954°C) for 1 hour, followed by a water quench.
4. Aging: Carried out at 975 -1,025°F (524 - 552°C) for 4 to 8 hours, followed by air cooling.
Optimum Properties Achieving optimal properties in small cross sections is possible through rapid quenching in the solution-treated and aged condition. However, larger cross-sections and/or delayed quenching might result in suboptimal properties.
HardnessIn the annealed state, typical hardness ranges from Rockwell C 30-34, whereas the solution-treated and aged state achieves approximately Rockwell C 35-39.
Forgeability/Formability DAXUN Ti-6Al-4V Titanium Tube, renowned as Grade 5 Titanium Tube, undergoes precision forging at 1,750°F (954°C) with a crucial final forging temperature of 1,450°F (788°C). To achieve optimal results, a significant reduction of at least 35% is highly recommended, ensuring exceptional quality and performance.
DAXUN Ti-6Al-4V Titanium Tube, or Grade 5 Titanium Tube, presents challenges in forming at room temperature, even post-annealing. However, extensive forming operations, such as bending or stretching, are achievable when annealed material is heated up to 1,200°F (649°C), maintaining all mechanical properties intact. Additionally, creep forming facilitates hot sizing or forming between 1,000 and 1,200°F (538 to 649°C).
Machinability DAXUN Ti-6Al-4V Titanium Tube, or Grade 5 Titanium Tube, can be expertly machined using techniques suitable for austenitic stainless steels. Employ slow speeds, high feeds, and ensure robust tool rigidity, along with the application of copious non-chlorinated cutting fluids for optimal machining results.
Weldability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, exhibits excellent weldability in both annealed and solution partially aged conditions, with subsequent aging.
Post-weld heat treatment accomplishes effective aging. It is crucial to avoid contamination with oxygen, nitrogen, and hydrogen. Fusion welding should be performed in an inert gas-filled chamber or utilize an inert gas tail shield for the molten metal and adjacent hot zones. Techniques such as spot welding, seam welding, and flash welding can be executed without a protective atmosphere.
Special Considerations DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, may experience contamination with hydrogen from improper pickling and absorption of oxygen, nitrogen, and carbon during forging, heat treating, brazing, etc. Such contamination could potentially reduce ductility and negatively impact notch sensitivity and formability.
