Daxun Alloy's pure titanium Grade 1 titanium tubes include:
The seamless titanium tubes and welded titanium tubes at Daxun Alloy boast outstanding ductility and cold formability, making them perfect for deep drawing. Grade 1 titanium tubes are celebrated for their excellent general and seawater corrosion resistance, as well as their superb resistance to oxidizing, neutral, and slightly reducing environments (solutions) including chlorides.
Titanium's low density-approximately half that of nickel-based alloys-combined with its high strength, light weight, and exceptional corrosion resistance, make it the material of choice for a wide range of harsh chemical conditions. Our products conform to the following execution 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)
Widely regarded as the go-to titanium tube for industrial applications, Grade 2 offers an excellent balance of moderate strength and satisfactory ductility. It excels in both highly oxidizing and slightly reducing conditions, including chlorides. This tube delivers robust corrosion protection in the chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, industrial and aerospace components, CPI equipment, and piping.
Fabrication
Titanium Grade 2 is highly amenable to cold forming using standard methods. It can be easily machined, though special care must be taken to maintain sharp tools and generously apply coolant. Similar to machining austenitic stainless steels, the cuts should be deep and continuous with slow feeds and speeds.
Stock Availability
Daxun Alloys maintains an extensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes, available in a wide array of sizes.
Weight Reduction
With a low density and an outstanding strength-to-weight ratio, CP 2 grade titanium tubes are ideal for applications demanding weight reduction without compromising on strength. These tubes are cold formable, possess good ductility, and can be welded using conventional TIG and MIG processes, though inert gas shielding is necessary to prevent weld zone embrittlement.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tube exhibits an alpha (hexagonal close-packed) crystal structure, similar to commercially pure titanium grades 1 and 3. At around 885°C (1625°F), it transforms to a beta (body-centered cubic) structure. The transformation temperature can vary based on the type and quantity of impurities or alloying additions. Adding alloying elements also bifurcates the equilibrium transformation temperature into two zones: the alpha transformation zone, below which the alloy remains all alpha, and the beta transformation zone, above which the alloy is all beta. Between these temperatures, both alpha and beta forms coexist. 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 meticulously crafted from hollow blanks through a hot extrusion process or oblique rolling and piercing process, followed by multiple cold rolling stages. Each stage of manufacturing ensures continuous perimeters. The comprehensive manufacturing process includes: sponge titanium vacuum arc melting, ingot blanking to create 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, crafted from annealed flat-rolled steel plate or strip, utilizes the precision-driven automatic arc welding (TIG) process. The meticulous production process encompasses: titanium plate uncoiling, shearing, butt welding, cleaning, pipe forming, TIG welding, eddy current testing, pre-sizing, annealing, precision reducing and sizing, straightening, caliper marking, cutting, ultrasonic testing, hydrostatic testing, final inspection, and packaging. To ensure impeccable quality, welded pipes undergo at least one stress relief heat treatment post-forming and welding. Notably, Daxun employs any filler materials during the welding process to achieve optimal results.
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 premier choice among titanium alloys. This duplex alpha+beta titanium alloy leverages aluminum as the alpha stabilizer and vanadium as the beta stabilizer. Renowned for its high strength, this alloy remains highly effective at temperatures as low as 800°F (427°C). ATI Ti-6Al-4V, Grade 5 alloy excels in 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, all demanding a superior strength-to-weight ratio.
This exceptional alloy undergoes initial melting through advanced techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM), followed by one or two steps of vacuum arc remelting.
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 1,700-1,900°F (927 - 1,038°C) when superior hardness, tensile strength, and fatigue resistance are required.
DAXUN 6-4 Grade 5 Titanium Tube offers versatile heat treatment options.
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
Enhanced properties are achieved in solution treated and aged conditions for small cross sections with rapid quenching. Larger cross sections or delayed quenching might yield suboptimal properties.
Hardness
In the annealed condition, typical hardness ranges from Rockwell C 30-34, reaching 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 meticulously forged at a precise temperature of 1,750°F (954°C), concluding at a final forging temperature of 1,450°F (788°C). For optimal results, a reduction of at least 35% is highly recommended, ensuring unmatched structural integrity and performance.
The formidable DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube exhibits significant challenges in forming at ambient temperatures, even when annealed. To achieve intricate forms such as bends or stretches, the material can be manipulated at elevated temperatures up to 1,200°F (649°C) while preserving its mechanical properties. For precision hot sizing or forming, creep forming is an effective technique at temperatures between 1,000 and 1,200°F (538 to 649°C).
Machinability
Exhibiting exceptional machinability, the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube can be efficiently processed using methods akin to those for austenitic stainless steels. Optimal results are achieved with slow speeds, high feeds, and robust tool rigidity, coupled with an ample supply of non-chlorinated cutting fluids.
Weldability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube demonstrates excellent weldability in both annealed and solution-and-partially-aged conditions, with aging effectively conducted during post-weld heat treatment. Comprehensive measures must be taken to prevent contamination from oxygen, nitrogen, and hydrogen.
To ensure pristine welds, fusion welding should be carried out within an inert gas-filled chamber or by employing an inert gas tail shield over the molten metal and adjacent hot zones. Techniques including spot welding, seam welding, and flash welding can also be performed effectively without the need for a protective atmosphere.
Special Considerations
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube necessitates careful handling to avoid contamination with hydrogen from improper pickling and to prevent the absorption of oxygen, nitrogen, and carbon during critical processes like forging, heat treating, and brazing. Such contamination can significantly reduce ductility, impair notch sensitivity, and hinder formability.
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