Grade 2 Titanium Tube (UNS R50400 / Werkstoff WS 3.7034)
This titanium tube stands as the premier choice for industrial applications, offering a remarkable balance of moderate strength and commendable ductility. It excels in corrosion resistance under both highly oxidizing and mildly reducing conditions, including chlorides. This tube significantly enhances corrosion protection in chemical and offshore industries, as well as in aircraft manufacturing where strength and formability are paramount. Additionally, it is indispensable in heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and piping.
Fabrication
Titanium Grade 2 is highly receptive to cold forming with standard methods. It is easily machined, though maintaining sharp tools and using plenty of coolant is crucial. Similar to machining austenitic stainless steels, ensure deep, continuous cuts with slow feeds and speeds for optimal results.
Stock Availability
Daxun Alloys maintains an extensive stock of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes, catering to diverse industrial needs.
Weight Reduction
Grade 2 titanium tubes boast a low density and a high strength-to-weight ratio, perfect for applications demanding weight reduction without compromising strength. They are cold formable, exhibit good ductility, and can be welded with standard TIG and MIG processes, provided inert gas shielding is employed to avert weld zone embrittlement.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tube exhibits an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. Above approximately 885°C (1625°F), it transitions to a beta (body-centered cubic) structure. This transformation temperature can be adjusted by varying impurities or alloying additions. Alloying elements create two distinct 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). Typical transformation temperatures for Grade 2 titanium are 890°C (1635°F) for alpha and 913°C (1675°F) for beta.
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. Seamless tubes maintain continuous perimeters throughout all manufacturing stages. The comprehensive production process includes: sponge titanium vacuum arc melting, ingot blanking for hollow blanks, cleaning, cutting, feeding, hot extrusion or oblique rolling with piercing, degreasing, drying, cutting, online annealing, straightening, pickling, multiple cold rolling, degreasing, drying, vacuum annealing, final straightening, cutting, pickling, inspection, marking (DAXUN), and packaging.
Grade 2 Titanium Welded Pipe Manufacturing Process
Daxun's ASTM B338 Grade 2 titanium welded pipe is produced from annealed flat-rolled steel plate or strip through an automatic arc welding (TIG) process. Key production steps include: titanium plate uncoiling, shearing, butt welding, cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing, annealing, precision sizing and reducing, 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 does not use filler materials during welding.
Grade 2 Titanium Tube (UNS R50400 / Werkstoff WS 3.7034) This titanium tube stands as the most frequently utilized option for industrial applications, offering an exceptional balance between moderate strength and impressive ductility. Its unparalleled corrosion resistance in both highly oxidizing and mildly reducing environments (including exposure to chlorides) makes it invaluable. This tube delivers superior corrosion protection across various sectors such as the chemical industry, offshore operations, and aircraft manufacturing where both strength and formability are paramount. Furthermore, it is extensively used in heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and pipelines.
Fabrication
Titanium Grade 2 exhibits excellent responsiveness to cold forming using conventional techniques. While it is readily machinable, special care must be taken to maintain sharp tools and ensure liberal coolant usage. Similar to machining austenitic stainless steels, the process demands deep and continuous cuts with slow feeds and speeds for optimal results.
Stock Availability
Jiangsu Daxun Alloy Co., Ltd. maintains a comprehensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in a wide array of sizes.
Weight Reduction
CP 2 grade titanium tubes boast a low density coupled with a high strength-to-weight ratio, making them ideal for applications where reducing weight is crucial without compromising strength. These tubes are cold formable, display excellent ductility, and can be welded using standard TIG and MIG processes, although inert gas shielding is necessary to avoid weld zone embrittlement.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tube showcases an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. Upon heating to approximately 885°C [1625°F], it transitions to a beta (body-centered cubic) structure. This transformation temperature can vary with different impurities or alloying elements. Alloying elements not only alter this transformation temperature but also split it into two zones: the alpha transformation zone and the beta transformation zone, where both crystal structures coexist. For Grade 2 titanium, typical alpha and beta transformation temperatures are around 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 produced from hollow blanks through hot extrusion or oblique rolling and piercing processes, followed by multiple stages of cold rolling. Throughout the entire manufacturing operation, these titanium seamless tubes maintain continuous perimeters. The core manufacturing steps include: 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, straightening, pickling, multiple cold rolling stages, 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 fabricated from annealed flat-rolled steel plates or strips through an automatic arc welding (TIG) process. Key production stages encompass: uncoiling of titanium plates, 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. Post-formation and welding, welded pipes undergo at least one stress relief heat treatment. Daxun does not use any filler materials during 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), 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, offering exceptional strength even at low temperatures around 800°F (427°C). Renowned for its versatility, ATI Ti-6Al-4V, Grade 5 alloy excels in processes such as annealing, solution treating, and aging. Ideal for critical applications, it is used in compressor blades, disks, and rings for jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and high strength-to-weight ratio forgings.
The initial melting of the alloy is accomplished using advanced methods such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Subsequent remelting is conducted through one or two vacuum arc steps to ensure superior 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), showcasing its ability to withstand extreme temperatures.
Density: A remarkable 0.160 lb/in3; 4.47 g/cm3, highlighting the alloy's lightweight yet robust nature.
Beta Transus Temperature: 1830°F (± 25°); 999°C (± 14°), underscoring its critical transition properties.
Heat Treatment Annealed at 1,700-1,900°F (927 - 1,038°C), this process is essential when high hardness, tensile strength, and fatigue strength are paramount.
DAXUN 6-4 Grade 5 Titanium Tube offers versatile heat treatment options to meet diverse requirements.
1. Annealing: Conducted 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, using air or furnace cooling.
3. Solution Heat Treating: Executed at 1,675 -1,750°F (913 - 954°C) for 1 hour, ending with a water quench.
4. Aging: Carried out at 975 -1,025°F (524 - 552°C) for 4 to 8 hours, air cooling thereafter.
Optimum Properties Achieving optimum properties involves rapid quenching of small cross-sections in the solution-treated and aged condition. Larger cross-sections or delayed quenching may yield suboptimal properties.
HardnessTypical hardness ranges from Rockwell C 30-34 in the annealed condition to approximately Rockwell C 35-39 in the solution and aged condition.
Forgeability/Formability Forging the DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is optimally performed at 1,750°F (954°C) with a final forging temperature of 1,450°F (788°C). A reduction of at least 35% is recommended for exceptional results.
Due to its inherent strength, the DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is challenging to form at room temperature, even when annealed. Severe forming operations, such as bending or stretching, are best performed on annealed material at temperatures up to 1,200°F (649°C) without degrading mechanical properties. Additionally, creep forming is suitable for hot sizing or forming at temperatures from 1,000 to 1,200°F (538 to 649°C).
Superior Machinability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, boasts exceptional machinability. It can be expertly crafted using techniques suited for austenitic stainless steels. By employing slow speeds, high feeds, robust tool rigidity, and copious amounts of non-chlorinated cutting fluids, unparalleled precision and efficiency can be achieved.
Outstanding Weldability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, is remarkably weldable in both the annealed and solution-and-partially-aged conditions. The welding process is further optimized with aging accomplished during post-weld heat treatment.
During welding, it is crucial to prevent contamination from oxygen, nitrogen, and hydrogen. Fusion welding may be conducted within an inert gas-filled chamber, or by using an inert gas tail shield to protect the molten metal and adjacent hot zones. Advanced techniques such as spot welding, seam welding, and flash welding can be performed effectively without a protective atmosphere.
Crucial Special Considerations When working with DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, it is essential to avoid hydrogen contamination from improper pickling. Additionally, it is vital to prevent the absorption of oxygen, nitrogen, and carbon during forging, heat treating, and brazing, as such contamination can significantly reduce ductility, impair notch sensitivity, and diminish formability.
