Daxun Alloy's pure titanium Grade 1 titanium tubes include:
Our seamless and welded titanium tubes boast exceptional ductility and cold formability, perfect for deep drawing applications. Grade 1 titanium tubes stand out with their impressive resistance to general and seawater corrosion, as well as their superb resilience against oxidizing, neutral, and slightly reducing media, including chlorides.
Titanium, known for its low density (approximately half that of nickel-based alloys), high strength, lightweight, and remarkable corrosion resistance, is ideal for various challenging chemical environments. Our tubes adhere to the following 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, offering a perfect blend of moderate strength and ductility. They deliver outstanding corrosion resistance in both highly oxidizing and slightly reducing conditions, including chlorides. These tubes are invaluable in the chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, and more, where strength and formability are critical.
Fabrication
Titanium Grade 2 is highly responsive to cold forming using standard techniques. While it can be easily machined, it requires precision-sharp tools and ample coolant are essential. Similar to machining austenitic stainless steels, it demands deep, continuous cuts with slow feeds and speeds.
Stock Availability
Daxun Alloys maintains a diverse inventory of CP 2 Grade Titanium Seamless and Welded Pipes, available in various sizes to meet your specific requirements.
Weight Reduction
With their low density and impressive strength-to-weight ratio, CP 2 grade titanium tubes are ideal for weight-sensitive applications without compromising strength. These tubes are cold formable, exhibit excellent ductility, and can be welded using traditional TIG and MIG processes, provided inert gas shielding is employed to prevent weld zone embrittlement.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium features an alpha (hexagonal close-packed) crystal structure, similar to grades 1 and 3 of commercially pure titanium. Around 885°C (1625°F), it transitions to a beta (body-centered cubic) structure. This transformation temperature varies with the type and amount of impurities or alloying elements. Alloy additions also bifurcate the equilibrium transformation temperature into two zones: the alpha transformation zone (all alpha) and the beta transformation zone (all beta), with both forms present between these temperatures. 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 crafted from hollow blanks through hot extrusion or oblique rolling and piercing, followed by multiple cold rolling stages. Ensuring continuous perimeters at all manufacturing stages, the process includes: sponge titanium vacuum arc melting, ingot blanking to obtain hollow blanks, cleaning, cutting, 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 fabricated from annealed flat-rolled steel plate or steel strip through an advanced automatic arc welding (TIG) process. Key production steps encompass: 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. Post-welding, all pipes must undergo at least one stress relief heat treatment. Note that Daxun employs filler materials during the welding process.
Ti-6Al-4V Titanium Pipe - Grade 5 Premium 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 alloy incorporates aluminum as the alpha stabilizer and vanadium as the beta stabilizer. It offers a high-strength profile suitable for low temperatures around 800°F (427°C). ATI Ti-6Al-4V, Grade 5, is ideal for annealing, solution treating, and aging, and finds applications in compressor blades, disks, and rings for jet engines, fuselage and space capsule components, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and critical high strength-to-weight ratio forgings.
The alloy is initially melted using advanced techniques such as vacuum arc remelting (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Remelting can be performed in one or two vacuum arc steps to ensure purity and consistency.
Specifications
• ASTM B338 - Standard Specification for Heat-Treatable Titanium Tube
• AMS 4928 - Standard for Forgings and Forging Stock (Annealed)
• AMS 4965 - Standard for Forgings (Solution Treated and Aged)
• AMS 4967 - Standard for 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: 1,830°F (± 25°); 999°C (± 14°)
Heat Treatment When high hardness, tensile strength, and fatigue strength are required, anneal at 1,700-1,900°F (927 - 1,038°C).
DAXUN 6-4 Grade 5 Titanium Tube supports diverse heat treatment methodologies.
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, followed by water quenching.
4. Aging: 975 - 1,025°F (524 - 552°C), 4 to 8 hours - air cool.
Optimum Properties Optimal properties are achieved in small cross sections with rapid quenching post-solution treatment and aging. Larger cross-section sizes or delayed quenching may lead to suboptimal properties.
HardnessTypical hardness in the annealed state is Rockwell C 30-34, increasing to approximately Rockwell C 35-39 in the solution treated and aged condition.
Forgeability/Formability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is expertly forged at a precise temperature of 1,750°F (954°C), with a final refinement at 1,450°F (788°C). To achieve optimal results, a reduction of at least 35% is strongly recommended.
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube presents challenges in forming at room temperature, even when annealed. For demanding forming operations such as bending or stretching, the annealed material can be effectively manipulated at elevated temperatures up to 1,200°F (649°C) without compromising 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 Machining DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is akin to machining austenitic stainless steels. Optimal performance is achieved with slow speeds, high feeds, robust tool rigidity, and the generous use of non-chlorinated cutting fluids.
Weldability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube offers exceptional weldability in both annealed and solution-treated conditions. Aging can be seamlessly integrated during post-weld heat treatment.
To ensure pristine welds, precautions must be taken to prevent contamination from oxygen, nitrogen, and hydrogen. Fusion welding should be conducted in an inert gas-filled chamber or with an inert gas tail shield covering the molten metal and adjacent hotspots. Techniques such as spot welding, seam welding, and flash welding can be performed effectively without needing a protective atmosphere.
Special Considerations DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube requires meticulous attention to avoid hydrogen contamination from improper pickling and the absorption of oxygen, nitrogen, and carbon during processes like forging, heat treating, and brazing. Such contamination can detrimentally affect ductility and compromise notch sensitivity and formability.