Grade 2 Titanium Tube (UNS R50400 / Werkstoff WS 3.7034)
The Gr2 Titanium Welded Tube (ASTM B861 Grade 2) is a preferred choice for industrial applications due to its exceptional balance of moderate strength and ductility. Renowned for its outstanding corrosion resistance in both highly oxidizing and mildly reducing environments-including chloride-rich conditions-it is indispensable across various sectors. This versatile titanium tube is extensively utilized in chemical processing, offshore industries, aircraft manufacturing, and heat exchangers. It also finds applications in hypochlorite systems, fire water systems, ballast water systems, CPI equipment, and diverse industrial and aerospace components, delivering reliable performance wherever strength and formability are critical.
Fabrication
Titanium Grade 2 is highly receptive to cold forming using conventional techniques. It can be efficiently machined, with a focus on maintaining sharp tools and liberal application of coolants. Similar to austenitic stainless steel machining, cutting operations should be deep and continuous, accompanied by slow feeds and speeds, ensuring precision and integrity.
Stock Availability
Daxun Alloys proudly maintains an extensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes, available in a diverse range of sizes to meet varied industrial needs.
Weight Reduction
The CP 2 Grade Titanium Tubes boast a low density coupled with a high strength-to-weight ratio, ideal for applications necessitating weight reduction without compromising structural integrity. These tubes are cold formable, exhibit excellent ductility, and can be welded using standard TIG and MIG processes. Ensuring inert gas shielding during welding is crucial to prevent embrittlement of the weld zone.
Crystal Structure
ASTM B338 Grade 2 titanium tube features an alpha (hexagonal close-packed) crystal structure at room temperature, akin to commercially pure titanium grades 1 and 3. At approximately 885°C (1625°F), it transitions to a beta (body-centered cubic) structure. This transformation temperature can be altered by the impurities or alloying elements present. Alloying elements further divide the equilibrium transformation temperature into an alpha transformation zone (all alpha) and a beta transformation zone (all beta). Between these zones, both alpha and beta forms coexist. 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 crafted from hollow blanks through hot extrusion or oblique rolling and piercing methods, followed by multiple cold rolling processes. Throughout the manufacturing stages, the seamless tubes maintain continuous perimeters. The comprehensive production process includes sponge titanium vacuum arc melting, ingot blanking to obtain hollow blanks, cleaning, cutting, feeding, hot extrusion or oblique rolling, piercing, degreasing, drying, cutting, online annealing, straightening, pickling, multiple cold rolling, degreasing, drying, vacuum annealing, straightening, cutting, pickling, final inspection, marking (DAXUN), and packaging, ensuring premium quality.
Grade 2 Titanium Welded Pipe Manufacturing Process
Daxun's ASTM B338 Grade 2 titanium welded pipes are produced from annealed flat-rolled steel plate or strip using the automatic arc welding (TIG) process. The meticulous production process encompasses uncoiling titanium plates, shearing, butt welding, cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing annealing, precision reducing, sizing, straightening, caliper marking, cutting, ultrasonic testing, hydrostatic testing, final inspection, and packaging. Post welding, the pipes undergo at least one stress relief heat treatment, with Daxun ensuring no filler materials are used during the welding process for optimal quality.
Grade 2 Titanium Tube (UNS R50400 / Werkstoff WS 3.7034) This titanium tube, frequently utilized in industrial applications, harmonizes moderate strength with impressive ductility. Its superior corrosion resistance prevails in both highly oxidizing and mildly reducing environments, including chlorides. This makes it indispensable for chemical and offshore industries, aircraft manufacturing, and various systems such as heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial components, aerospace parts, CPI equipment, and piping solutions.
Fabrication
Titanium Grade 2 is highly receptive to cold forming by standard methods. It can be easily machined, provided sharp tools and abundant coolant are used. Similar to machining austenitic stainless steels, the process requires deep, continuous cuts at slow feed and speed rates to ensure precision and efficiency.
Stock Availability
Daxun Alloys maintains an extensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes, ready to meet diverse industrial needs.
Weight Reduction
The CP 2 grade titanium tubes boast a low density coupled with a high strength-to-weight ratio, making them perfect for applications necessitating weight reduction without compromising strength. They are cold formable, exhibit excellent 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 possesses 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 can fluctuate based on impurities or alloying elements present. Alloying elements further delineate the equilibrium transformation temperature into the alpha and beta transformation zones, with both forms coexisting between specific temperature ranges. 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 manufactures ASTM B338 Grade 2 titanium seamless tubes starting with hollow blanks produced by hot extrusion or oblique rolling and piercing, followed by multiple cold rolling stages. Throughout production, seamless tubes maintain continuous perimeters. The process involves: vacuum arc melting of sponge titanium into ingots, blanking to create 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 produces ASTM B338 Grade 2 titanium welded pipes from annealed flat-rolled steel plate or strip using the automatic arc welding (TIG) process. Key production steps include: uncoiling titanium plate, 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-forming and welding, the pipes undergo at least one stress relief heat treatment, with Daxun ensuring no filler materials are used during welding.
Ti-6Al-4V Titanium Pipe- Grade 5 Titanium TubeTitanium Alloy - (UNS R56400)
Introduction
Introducing the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400), the pinnacle of titanium alloys. Renowned for its duplex alpha+beta composition, this advanced alloy leverages aluminum as the alpha stabilizer and vanadium as the beta stabilizer. Engineered to deliver exceptional high-strength performance, it thrives even at low temperatures around 800°F (427°C). Our ATI Ti-6Al-4V, Grade 5 alloy excels in annealing, solution treating, and aging processes. It's the backbone of key aerospace components including compressor blades, disks, and rings for jet engines, fuselage and space capsule parts, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and critical forgings where a high strength-to-weight ratio is paramount.
Crafted through cutting-edge vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM) techniques, this alloy undergoes meticulous initial melting. Optimal properties are ensured through one or two vacuum arc remelting steps, guaranteeing the highest levels of purity and performance.
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 PropertiesThe Ti-6Al-4V Titanium Tube offers an exceptional melting range of 2,800-3,000°F (1,538 - 1,649°C), making it robust for demanding applications.
Density: 0.160 lb/in3; 4.47 g/cm3
Beta Transus Temperature: 1830°F (± 25°); 999°C (± 14°)
Heat Treatment When high hardness, tensile strength, and fatigue strength are required, the material is annealed at 1,700-1,900°F (927 - 1,038°C).
The versatile DAXUN 6-4 Grade 5 Titanium Tube offers multiple heat treatment options to suit various requirements.
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 Ensuring rapid quenching for small cross-sections will achieve the best properties in the solution treated and aged condition. Larger sections or delayed quenching may yield slightly lesser properties.
HardnessIn its annealed state, the typical hardness ranges from Rockwell C 30-34, while in the solution and aged condition, it reaches approximately Rockwell C 35-39.
Forgeability/Formability The DAXUN Ti-6Al-4V Titanium Tube, Grade 5, achieves optimal forging at 1,750°F (954°C) with a final forging temperature of 1,450°F (788°C). A minimum reduction of 35% is recommended to secure the best results.
Known for its formidable strength, the DAXUN Ti-6Al-4V Titanium Tube, Grade 5, is challenging to form at room temperature, even when annealed. For severe forming operations like bending or stretching, annealed material can be processed at up to 1,200°F (649°C) without compromising mechanical properties. Creep forming is ideal for hot sizing or forming at temperatures between 1,000 and 1,200°F (538 to 649°C).
Machinability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube can be expertly machined using techniques viable for austenitic stainless steels. Ensure slow speeds, high feeds, and robust tool rigidity, complemented with generous amounts of non-chlorinated cutting fluids for optimal efficiency.
Weldability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube exhibits excellent weldability in both annealed or solution and partially aged conditions. Ensure proper aging processes during post-weld heat treatment.
During post-weld heat treatment, careful measures are necessary to avoid contamination from oxygen, nitrogen, and hydrogen. Fusion welding is best performed within an inert gas-filled chamber or using an inert gas tail shield over the molten metal and adjacent hot zones. Additionally, spot welding, seam welding, and flash welding can be achieved without a protective atmosphere.
Special Considerations DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube requires vigilance against hydrogen contamination from improper pickling and absorption of oxygen, nitrogen, and carbon during processes like forging, heat treating, and brazing. Such contaminations may compromise ductility, notch sensitivity, and formability.
