Daxun Alloy's Pure Titanium Grade 1 Tubes Include:
Seamless titanium tubes and welded titanium tubes, which boast excellent ductility and cold formability, making them ideal for deep drawing. Grade 1 titanium tubes are renowned for their superb general and seawater corrosion resistance. They also exhibit exceptional resistance to oxidizing, neutral, and slightly reducing solutions (including chlorides).
Titanium's low density (approximately half that of nickel-based alloys), combined with its high strength, light weight, and superior corrosion resistance, make it an excellent choice for a variety of demanding chemical environments. The execution standards are: 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)
This titanium tube is the most commonly used for industrial applications, offering an outstanding balance of moderate strength and reasonable ductility. It provides excellent corrosion resistance in both highly oxidizing and slightly reducing conditions (including chlorides). Ideal for the chemical and offshore industries, as well as aircraft manufacturing, where strength and formability are key. It is also utilized in heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and pipes.
Fabrication
Titanium Grade 2 responds exceptionally well to cold forming using standard methods. It is readily machinable, but special attention must be given to maintaining sharp tools and the liberal use of coolant. Similar to machining austenitic stainless steels, cuts should be deep and continuous with slow feeds and speeds.
Stock Availability
Daxun Alloys maintains a robust inventory of CP 2 Grade Titanium Seamless and Welded Pipes in a variety of sizes.
Weight Reduction
CP 2 grade titanium tubes feature low density and a high strength-to-weight ratio, making them ideal for applications requiring weight reduction without compromising strength. They are cold formable, exhibit good ductility, and can be welded using conventional TIG and MIG processes, although inert gas shielding is necessary to prevent embrittlement of the weld zone.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tubes possess an alpha (hexagonal close-packed) crystal structure, similar to commercially pure titanium grades 1 and 3. At approximately 885°C (1625°F), they transform to a beta (body-centered cubic) structure. This transformation temperature can vary depending on impurities or alloying additions. Alloying elements also create two 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. Between these temperatures, both alpha and beta forms coexist. Typical alpha and beta transformation temperatures for Grade 2 titanium 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 via a hot extrusion process or an oblique rolling and piercing process, followed by multiple cold rolling stages. Titanium seamless tubes maintain continuous perimeters throughout all manufacturing stages. The de novo 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 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, utilizing the automatic arc welding (TIG) process. Our sophisticated production processes encompass: titanium plate uncoiling, shearing, butt welding, cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing, annealing, precision reducing and sizing, straightening, further eddy current testing, caliper marking, cutting, ultrasonic testing, hydrostatic testing, final inspection, and packaging. To ensure superior quality, our welded pipes undergo at least one stress relief heat treatment post forming and welding. Notably, Daxun refrains from using any filler materials during the welding process.
Ti-6Al-4V Titanium Pipe - Grade 5 Titanium Tube
Titanium Alloy - (UNS R56400)
Introduction
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400), stands as the most coveted titanium alloy in the market. This duplex alpha+beta titanium alloy employs aluminum as the alpha stabilizer and vanadium as the beta stabilizer. Renowned for its high strength, this alloy is operational at temperatures as low as 800°F (427°C). ATI Ti-6Al-4V, Grade 5 alloy is ideal for annealing, solution treating, and aging processes. It finds widespread application in compressor blades, disks, and rings for jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and critical forgings, all benefiting from its exceptional strength-to-weight ratio.
The alloy is initially melted using advanced techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). Subsequent remelting is conducted in one or two vacuum arc steps to ensure purity and quality.
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 Properties
Ti-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
Annealing at 1,700-1,900°F (927 - 1,038°C) is recommended when high hardness, tensile strength, and fatigue strength are required.
DAXUN's 6-4 Grade 5 Titanium Tube can undergo a variety of heat treatments to achieve desired properties.
1. Annealing: 1,275 -1,400°F; (691 - 760°C), for ½ to 2 hours, followed by air or furnace cooling.
2. Stress Relief Annealing: Conducted at 1,000 -1,200°F (538 - 649°C) for 1 to 8 hours, with air or furnace cooling.
3. Solution Heat Treating: Performed at 1,675 -1,750°F (913 - 954°C) for 1 hour, followed by a water quench.
4. Aging: Executed at 975 -1,025°F (524 - 552°C) for 4 to 8 hours, with air cooling.
Optimum Properties
For optimal properties, small cross-sections with rapid quenching are ideal in the solution treated and aged condition. Larger cross-section sizes and/or delayed quenching may yield less than optimal results.
Hardness
Typical hardness ranges include Rockwell C 30-34 in the annealed condition and approximately Rockwell C 35-39 in the solution and aged condition.
Forgeability/Formability
Introducing the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube! This exceptional tube is forged at a high temperature of 1,750°F (954°C) and reaches a final forging temperature of 1,450°F (788°C). For optimal performance and integrity, we recommend a reduction of at least 35% during the forging process.
When it comes to forming, the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, showing unparalleled resilience even at room temperature, presents significant forming challenges. However, even after annealing, severe bending or stretching can be efficiently executed at elevated temperatures up to 1,200°F (649°C) without compromising mechanical properties. For hot sizing or forming, creep forming at temperatures between 1,000 and 1,200°F (538 to 649°C) is highly effective.
Remarkable Machinability
Experience superior machinability with the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube. Utilizing standard machining methods for austenitic stainless steels, this tube ensures precision and durability. Employ slow speeds, high feeds, robust tool rigidity, and abundant non-chlorinated cutting fluids for optimal machining results.
Superior Weldability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube offers exceptional weldability in both annealed and solution-treated and partially aged conditions, ensuring reliable and robust joints.
Post-weld heat treatment accomplishes aging for the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube. To preserve material integrity, precautions must be taken to prevent contamination with oxygen, nitrogen, and hydrogen. Fusion welding can be performed in an inert gas-filled chamber or with an inert gas tail shield over the molten metal and nearby hot zones. Additionally, spot welding, seam welding, and flash welding are feasible without a protective atmosphere.
Critical Special Considerations
While working with the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, it's crucial to prevent hydrogen contamination from improper pickling and avoid the absorption of oxygen, nitrogen, and carbon during processes like forging, heat treating, and brazing. Such contamination can potentially reduce ductility, impair notch sensitivity, and hinder formability.
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