Daxun Alloy's Pure Titanium Grade 1 Tubes Include:
seamless titanium tubes and welded titanium tubes, which exemplify superior ductility and cold formability, making them ideal for deep drawing applications. Grade 1 titanium tubes are renowned for their outstanding general and seawater corrosion resistance, as well as their excellent resistance to oxidizing, neutral, and slightly reducing media (solutions), including chlorides.
Boasting low density-approximately half that of nickel-based alloys-titanium offers high strength, lightweight properties, and exceptional corrosion resistance, making it an ideal choice for a variety of demanding chemical environments. 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)
This titanium tube is the most frequently utilized for industrial applications, offering an excellent balance of moderate strength and reasonable ductility. It provides superb corrosion resistance in both highly oxidizing and slightly reducing conditions, including chlorides. It's highly effective 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 responsive to cold forming using standard methodologies. It is readily machinable, though careful attention must be given to maintaining sharp tools and using liberal amounts of coolant. Similar to machining austenitic stainless steels, cuts should be deep and continuous with slower feed rates and speeds.
Stock Availability
Daxun Alloys maintains a robust inventory of CP 2 Grade Titanium Seamless and Welded Pipes in various sizes.
Weight Reduction
CP 2 grade titanium tubes offer a remarkable combination of 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 conventional TIG and MIG processes, with inert gas shielding necessary to prevent embrittlement in the weld zone.
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. Around 885°C (1625°F), this structure transitions to a beta (body-centered cubic) configuration. This transformation temperature can vary with the type and quantity of impurities or alloying elements. Alloying elements also modify the single equilibrium transformation temperature into two distinct temperature zones: the alpha transformation zone, below which the alloy is fully alpha, and the beta transformation zone, above which the alloy is entirely beta. Between these temperatures, both alpha and beta forms coexist. 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 crafted from hollow blanks via hot extrusion or oblique rolling and piercing processes, followed by multiple cold rolling stages. Throughout manufacturing, titanium seamless tubes must maintain continuous perimeters. The comprehensive manufacturing 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
Jiangsu Daxun Alloy Co., Ltd. proudly presents Daxun's ASTM B338 Grade 2 titanium welded pipe, meticulously crafted from annealed flat-rolled steel plate or steel strip through an advanced automatic arc welding (TIG) process. Our 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. To ensure the highest quality, welded pipes undergo at least one stress relief heat treatment post-forming and welding, with no filler materials used during the welding process.
Introducing the Ti-6Al-4V Titanium Pipe - Premium Grade 5 Titanium Tube
Titanium Alloy Unveiled - Designation: (UNS R56400)
A Grand Introduction
DAXUN's Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400) stands as the pinnacle of titanium alloys. This duplex alpha+beta titanium alloy is masterfully stabilized with aluminum and vanadium, delivering unmatched high strength, suitable for use at temperatures as low as 800°F (427°C). ATI Ti-6Al-4V, Grade 5, excels in various treatments such as annealing, solution treating, and aging. Its versatility makes it ideal for crafting compressor blades, disks, 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's initial melting is performed using the precise vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM) techniques. Remelting is executed through one or two meticulous vacuum arc steps.
Detailed Specifications
• ASTM B338 - Standard Heat Treatable Titanium Tube
• AMS 4928 - Superior Forgings and Forging Stock (Annealed)
• AMS 4965 - Outstanding Forgings (Solution Treated and Aged)
• AMS 4967 - High-Quality Forgings (Annealed, Heat Treatable)
Physical Properties of Distinction
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°)
Advanced Heat Treatment
Annealed at 1,700-1,900°F (927 - 1,038°C) to achieve high hardness, tensile strength, and fatigue resistance.
DAXUN's Grade 5 (Ti-6Al-4V) Titanium Tube offers versatile heat treatment options.
1. Annealing: 1,275 - 1,400°F (691 - 760°C), ½ to 2 hours, followed by air or furnace cooling.
2. Stress Relief Annealing: 1,000 - 1,200°F (538 - 649°C), 1 to 8 hours, cooled in air or furnace.
3. Solution Heat Treating: 1,675 - 1,750°F (913 - 954°C), for 1 hour, then water quenched.
4. Aging: 975 - 1,025°F (524 - 552°C), for 4 to 8 hours, air-cooled.
Achieving Optimum Properties
Optimal properties are achieved in small cross-section sizes with rapid quenching in the solution treated and aged condition. Larger cross-sections or delayed quenching may result in less than optimal properties.
Superior Hardness
Typical hardness in the annealed condition is Rockwell C 30-34, and Rockwell C 35-39 in the solution treated and aged condition.
Forgeability/Formability
The DAXUN Ti-6Al-4V Titanium Tube, also known as Grade 5 Titanium Tube, showcases exceptional forgeability. It is initially forged at a temperature of 1,750°F (954°C), with the final forging process occurring at 1,450°F (788°C). For optimal results, a reduction of at least 35% in the forging process is highly recommended.
The DAXUN Ti-6Al-4V Titanium Tube, or Grade 5 Titanium Tube, presents challenges in forming at room temperature, even after annealing. However, for severe forming tasks like bending or stretching, the annealed material can be effectively shaped at temperatures up to 1,200°F (649°C) without altering its mechanical properties. Hot creep forming is an advantageous method for sizing or forming at elevated temperatures between 1,000 and 1,200°F (538 to 649°C).
Machinability
The DAXUN Ti-6Al-4V Titanium Tube, or Grade 5 Titanium Tube, offers excellent machinability using techniques suited for austenitic stainless steels. Employ slow speeds, high feeds, and ensure robust tool rigidity, complemented with ample amounts of non-chlorinated cutting fluids for optimal results.
Weldability
The DAXUN Ti-6Al-4V Titanium Tube, also known as Grade 5 Titanium Tube, is highly weldable when in the annealed state or after solution treatment with partial aging. The aging process is completed during the post-weld heat treatment.
It is crucial to prevent contamination with oxygen, nitrogen, and hydrogen during welding. Fusion welding should be performed within 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 all be executed without a protective atmosphere.
Special Considerations
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, is susceptible to contamination by hydrogen due to improper pickling and the absorption of oxygen, nitrogen, and carbon during processes such as forging, heat treating, and brazing. Such contamination can detrimentally affect ductility, notch sensitivity, and formability.
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