Daxun Alloy's Pure Titanium Grade 1 Tubes Offer Unmatched Quality:
Our seamless and welded titanium tubes boast excellent ductility and cold formability, ideal for deep drawing applications. Grade 1 titanium is renowned for its superb resistance to general and seawater corrosion, as well as its outstanding performance in oxidizing, neutral, and slightly reducing environments, including chlorides.
Titanium's unique properties-such as low density (approximately half that of nickel-based alloys), high strength, light weight, and exceptional corrosion resistance-make it the material of choice for challenging chemical conditions. Our tubes adhere to rigorous standards: ASTM B338, ASTM B265, ASME SB265, ASTM F67, ISO 5832-2, 3.7025, UNS R50250.
Grade 2 Titanium Tubes (UNS R50400 / Werkstoff WS 3.7034):
Grade 2 titanium tubes are the industry standard for balancing strength and ductility. They provide exceptional corrosion resistance in both highly oxidizing and slightly reducing environments, including chlorides. Ideal for chemical, offshore, and aerospace industries, they are also perfect for heat exchangers, hypochlorite systems, fire water systems, ballast water systems, CPI equipment, and aircraft manufacturing.
Fabrication
Titanium Grade 2 is highly responsive to cold forming using standard techniques. While it can be easily machined, it is crucial to use 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 maintains an extensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in a variety of sizes to meet diverse needs.
Weight Reduction
CP 2 grade titanium tubes offer low density and a high strength-to-weight ratio, making them ideal for applications requiring weight reduction without compromising strength. These tubes are cold formable with good ductility and can be welded using standard TIG and MIG processes, provided inert gas shielding is used to prevent weld zone embrittlement.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tubes exhibit an alpha (hexagonal close-packed) crystal structure, similar 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 vary based on impurities or alloying additions, creating distinct alpha and beta transformation zones. Typical temperatures for Grade 2 are 890°C (1635°F) for the alpha zone and 913°C (1675°F) for the beta zone.
Grade 2 Titanium Seamless Pipe Manufacturing Process
Daxun's ASTM B338 Grade 2 titanium seamless tubes are produced from hollow blanks via hot extrusion or oblique rolling and piercing, followed by multiple cold rolling processes. The seamless tubes maintain continuous perimeters throughout manufacturing, which includes: sponge titanium vacuum arc melting, ingot blanking, cleaning, cutting and feeding, hot extrusion or oblique rolling and piercing, degreasing, drying, cutting, online annealing and 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 meticulously crafted from annealed flat-rolled steel plate or steel strip using an advanced automatic arc welding (TIG) process. The comprehensive production processes 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. These welded pipes undergo at least one stress relief heat treatment post forming and welding to ensure optimal performance. Notably, Daxun refrains from using any filler materials during the welding process.
Ti-6Al-4V Titanium Pipe - Premium 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, revered for its duplex alpha+beta composition where aluminum acts as the alpha stabilizer and vanadium the beta stabilizer. This high-strength alloy performs exceptionally well at temperatures as low as 800°F (427°C). ATI Ti-6Al-4V, Grade 5 alloy is indispensable for annealing, solution treating, and aging processes. Its applications span across compressor blades, disks, and rings for jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and critical forgings demanding a stellar strength-to-weight ratio.
The alloy is initially melted using cutting-edge techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Remelting is meticulously achieved in one or two vacuum arc steps.
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: 1830°F (± 25°); 999°C (± 14°)
Heat Treatment For applications requiring high hardness, tensile strength, and fatigue strength, DAXUN anneals its Grade 5 Titanium Tube at 1,700-1,900°F (927 - 1,038°C).
DAXUN's 6-4 Grade 5 Titanium Tube is versatile, offering various heat treatment methods.
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 For optimal properties, rapid quenching of small cross sections in the solution treated and aged condition is recommended. Larger cross-section sizes or delayed quenching may result in suboptimal properties.
HardnessIn its annealed state, the typical hardness is Rockwell C 30-34, and in the solution and aged condition, it reaches approximately Rockwell C 35-39.
Forgeability/Formability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is meticulously forged at a high temperature of 1,750°F (954°C) with a final forging temperature of 1,450°F (788°C). For optimal results, a reduction of at least 35% is recommended, ensuring superior quality and performance.
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube presents significant challenges when forming at room temperature, even in an annealed state. However, it excels in severe forming operations such as bending or stretching when performed on annealed material up to 1,200°F (649°C) without altering its mechanical properties. For hot sizing or forming, creep forming is an effective method at temperatures ranging from 1,000 to 1,200°F (538 to 649°C), ensuring precision and durability.
Machinability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube can be effectively machined employing techniques used for austenitic stainless steels. This includes using slow speeds, high feeds, excellent tool rigidity, and copious amounts of non-chlorinated cutting fluids, ensuring precise and efficient machining processes.
Weldability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube demonstrates exceptional weldability in both annealed or solution and partially aged conditions. Aging is achieved during post-weld heat treatment.
It is imperative to take precautions to prevent contamination by oxygen, nitrogen, and hydrogen. Fusion welding should be executed in an inert gas-filled chamber or with an inert gas tail shield over the molten metal and adjacent hot zones. Additionally, spot welding, seam welding, and flash welding can be performed without the necessity of a protective atmosphere.
Special Considerations DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube must be protected against contamination by hydrogen during improper pickling and from absorbing oxygen, nitrogen, and carbon during various processes such as forging, heat treating, and brazing. Such contamination can significantly reduce ductility, impair notch sensitivity, and diminish overall formability.