Daxun Alloy's pure titanium Grade 1 titanium tubes include:
seamless titanium tubes and welded titanium tubes, which boast exceptional ductility and cold formability, making them perfect for deep drawing applications. Grade 1 titanium tubes are celebrated for their outstanding general and seawater corrosion resistance, as well as their excellent resistance to oxidizing, neutral, and slightly reducing media (including chlorides).
Titanium's low density (approximately half that of nickel-based alloys), combined with its high strength, light weight, and superb corrosion resistance, makes it an unparalleled choice for a wide range of harsh chemical conditions. Compliance standards include: 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)
The most widely utilized titanium tube in industrial applications, Grade 2 offers a perfect balance of moderate strength and reasonable ductility. It excels in corrosion resistance under highly oxidizing and slightly reducing conditions (including chlorides). This makes it ideal for the chemical and offshore industries, aircraft manufacturing, and is also widely used in heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and piping.
Fabrication
Titanium Grade 2 easily accommodates cold forming using conventional methods. It is readily machinable, though it requires careful attention to maintaining sharp tools and liberal coolant usage. Similar to machining austenitic stainless steels, the cuts should be deep and continuous with slow feeds and speeds.
Stock Availability
Daxun Alloys maintains a comprehensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes.
Weight Reduction
CP 2 grade titanium tubes have a low density and a high strength-to-weight ratio, making them ideal for applications needing weight reduction without compromising strength. These tubes are cold formable, exhibit good ductility, and can be welded using standard TIG and MIG processes, with inert gas shielding necessary to prevent weld zone embrittlement.
Crystal Structure
At ambient temperatures, ASTM B338 Grade 2 titanium tubes exhibit an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. At roughly 885°C (1625°F), this transforms to a beta (body-centered cubic) structure. Depending on impurities or alloying additions, this transformation temperature can fluctuate. Alloying elements also 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. Between these zones, both alpha and beta forms co-exist. Typical 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 meticulously crafted from hollow blanks through a hot extrusion or oblique rolling and piercing process, followed by multiple stages of cold rolling. These seamless tubes must maintain continuous perimeters throughout manufacturing. Essential steps in the production of titanium seamless tubes include: 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 premium ASTM B338 Grade 2 titanium welded pipe, crafted from annealed flat-rolled steel plates or strips, utilizes advanced automatic arc welding (TIG) technology. The meticulous production process includes: uncoiling titanium plates, shearing, butt welding, cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing, annealing, precision reducing, sizing, straightening, a second round of eddy current testing, caliper marking, cutting, ultrasonic testing, hydrostatic testing, final inspection, and meticulous packaging. Each welded pipe undergoes stress relief heat treatment post formation and welding. Daxun ensures optimal quality without 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), the industry's favored alloy, is a duplex alpha+beta titanium alloy with aluminum as the alpha stabilizer and vanadium as the beta stabilizer. Renowned for its superior strength, it performs excellently at low temperatures around 800°F (427°C). The ATI Ti-6Al-4V, Grade 5 alloy is versatile, suitable for annealing, solution treating, and aging. It is ideal for compressor blades, discs, and rings in jet engines; fuselage and space capsule parts; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and high strength-to-weight ratio critical forgings.
This exceptional alloy is initially melted using advanced techniques like vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). The remelting process involves 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: 1830°F (± 25°); 999°C (± 14°)
Heat Treatment
Annealed at temperatures between 1,700 - 1,900°F (927 - 1,038°C), this treatment is ideal for achieving high hardness, tensile strength, and fatigue resistance.
DAXUN 6-4 Grade 5 Titanium Tube can be expertly heat-treated through various methods.
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: 1,000 -1,200°F (538 - 649°C), for 1 to 8 hours, followed by air or furnace cooling
3. Solution Heat Treating: 1,675 -1,750°F (913 - 954°C), for 1 hour, followed by water quenching
4. Aging: 975 -1,025°F (524 - 552°C), for 4 to 8 hours, followed by air cooling
Optimum Properties
Achieve optimal properties with small cross-sections and rapid quenching in the solution treated and aged condition. Larger cross-sections or delayed quenching may result in properties that are less than optimal.
Hardness
Typical hardness ranges: Rockwell C 30-34 in the annealed condition and approximately Rockwell C 35-39 in the solution and aged condition.
Forgeability/Formability
Experience the superior performance of DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube. Expertly forged at a precise 1,750°F (954°C) with a meticulous final forging temperature of 1,450°F (788°C), ensuring exceptional quality. To achieve optimal results, a reduction of at least 35% is highly recommended.
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube presents challenges at room temperature, even post-annealing. For demanding forming processes such as bending or stretching, we recommend performing these operations on the annealed material at elevated temperatures up to 1,200°F (649°C) to maintain mechanical integrity. Utilize creep forming for hot sizing or shaping at temperatures between 1,000 and 1,200°F (538 to 649°C) for best results.
Machinability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is machined with precision using techniques suitable for austenitic stainless steels. Employ slow speeds, high feeds, and robust tool rigidity while ensuring ample use of non-chlorinated cutting fluids for optimal machining performance.
Weldability
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube offers exceptional weldability in both annealed and solution-treated conditions, with aging seamlessly integrated during post-weld heat treatment.
To ensure superior weld integrity, precautions are imperative to prevent contamination by oxygen, nitrogen, and hydrogen. Fusion welding should be conducted in an inert gas-filled chamber or with an inert gas tail shield over the molten and nearby hot zones. Spot welding, seam welding, and flash welding can be executed without a protective atmosphere, ensuring versatility in welding techniques.
Special Considerations
To preserve the integrity of DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, it is crucial to avoid contamination with hydrogen during improper pickling and prevent the absorption of oxygen, nitrogen, and carbon during forging, heat treating, and brazing. Such contamination can adversely affect ductility and compromise notch sensitivity and formability.