Daxun Alloy's pure titanium Grade 1 titanium tubes include:
Seamless titanium tubes and welded titanium tubes, celebrated for their superior ductility and cold formability, are perfect for deep drawing applications. Renowned for their outstanding general and seawater corrosion resistance, Grade 1 titanium tubes also excel in resisting oxidizing, neutral, and mildly reducing environments, including chloride-rich solutions.
Titanium's exceptional properties, such as low density (approximately half of nickel-based alloys), high strength, light weight, and remarkable corrosion resistance, make it the material of choice for 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)
Widely regarded as the go-to titanium tube for industrial applications, Grade 2 strikes an exceptional balance between moderate strength and commendable ductility. It offers excellent corrosion resistance in both highly oxidizing and mildly reducing conditions, including chloride environments. This grade is indispensable in the chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, fire water systems, ballast water systems, CPI equipment, and various industrial and aerospace components.
Fabrication
Titanium Grade 2 exhibits excellent cold forming capabilities with conventional methods. While it can be easily machined, special care is required to maintain sharp tools and liberal use of coolant. Like machining austenitic stainless steels, cutting should be deep and continuous, with slow feeds and speeds for optimal results.
Stock Availability
Daxun Alloys maintains an extensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in a range of sizes to meet diverse application needs.
Weight Reduction
With their low density and superior strength-to-weight ratio, CP 2 grade titanium tubes are ideal for applications demanding weight reduction without compromising structural integrity. These tubes are cold formable, highly ductile, and weldable using standard TIG and MIG processes, with inert gas shielding to prevent weld zone embrittlement.
Crystal Structure
At room temperature, ASTM B338 Grade 2 titanium tubes exhibit an alpha (hexagonal close-packed) crystal structure, akin to commercially pure titanium grades 1 and 3. Upon reaching approximately 885°C (1625°F), the structure transforms into a beta (body-centered cubic) form. This transformation temperature is adjustable based on impurities or alloying additions. Alloying elements create distinct alpha and beta transformation zones, with typical temperatures for Grade 2 titanium being 890°C (1635°F) for alpha and 913°C (1675°F) for beta.
Grade 2 Titanium Seamless Pipe Manufacturing Process
Daxun's ASTM B338 Grade 2 titanium seamless tubes undergo a meticulous manufacturing process: starting from hollow blanks formed via hot extrusion or oblique rolling and piercing, followed by multiple cold rolling stages. The production sequence 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, 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 stands as a testament to superior craftsmanship, meticulously fabricated from annealed flat-rolled steel plate or steel strip using the sophisticated automatic arc welding (TIG) process. The production journey encompasses several critical steps: 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. Each welded pipe undergoes a stringent stress relief heat treatment post-forming and welding to ensure optimal integrity and performance. Notably, Daxun abstains from using any filler materials during the welding process, ensuring the purest quality of the final product.
Ti-6Al-4V Titanium Pipe - Premium Grade 5 Titanium TubeTitanium Alloy - (UNS R56400)
Introduction
The DAXUN Ti-6Al-4V Titanium Tube, recognized as Grade 5 (UNS R56400), reigns supreme as the most sought-after titanium alloy. This duplex alpha+beta alloy harnesses aluminum as the alpha stabilizer and vanadium as the beta stabilizer, yielding a high-strength material operable at low temperatures around 800°F (427°C). Distinguished by its versatility, ATI Ti-6Al-4V, Grade 5 alloy is integral to annealing, solution treating, and aging processes. Its applications span a vast array of critical aerospace and industrial components, including compressor blades, disks, and rings for jet engines; fuselage and space capsule components; pressure vessels; *** cases; helicopter rotor hubs; fasteners; and high-strength-to-weight ratio forgings.
Initially, the alloy undergoes melting through advanced techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). The remelting phase involves one or two meticulous vacuum arc steps to ensure the alloy's uniformity and quality.
Specifications
• ASTE 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 PropertiesMelting Range of Ti-6Al-4V Titanium Tube: 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 For achieving high hardness, tensile strength, and fatigue strength, the titanium alloy is annealed at temperatures ranging from 1,700 to 1,900°F (927 - 1,038°C).
DAXUN 6-4 Grade 5 Titanium Tube offers diverse heat treatment options to cater to specific application needs.
1. Annealing: Conducted at temperatures between 1,275 - 1,400°F (691 - 760°C) for ½ to 2 hours, followed by air or furnace cooling.
2. Stress Relief Annealing: Performed at 1,000 - 1,200°F (538 - 649°C) for 1 to 8 hours, with subsequent air or furnace cooling.
3. Solution Heat Treating: Executed at 1,675 - 1,750°F (913 - 954°C) for 1 hour, followed by a water quench.
4. Aging: Conducted at 975 - 1,025°F (524 - 552°C) for 4 to 8 hours, followed by air cooling to achieve desired properties.
Optimum Properties Optimum properties are achieved in small cross-sections with rapid quenching in the solution-treated and aged condition. However, larger cross-sections or delayed quenching may result in less-than-optimal properties.
HardnessIn the annealed condition, the typical hardness ranges from Rockwell C 30-34, whereas in the solution and aged condition, it ranges from approximately Rockwell C 35-39.
Forgeability/Formability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is meticulously forged at a high temperature of 1,750°F (954°C), followed by a final forging stage at 1,450°F (788°C). For optimal results, a minimum reduction of 35% is highly recommended, ensuring superior quality and performance.
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube presents challenges when forming at room temperature, even in an annealed state. However, severe forming operations like bending or stretching can be executed on annealed material at elevated temperatures up to 1,200°F (649°C) without altering its mechanical properties. Creep forming is ideal for hot sizing or forming at temperatures ranging from 1,000 to 1,200°F (538 to 649°C), maintaining the integrity of the material.
Machinability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube can be effectively machined using techniques applicable to austenitic stainless steels. This requires slow speeds, high feed rates, robust tool rigidity, and substantial use of non-chlorinated cutting fluids, ensuring precise and efficient machining outcomes.
Weldability DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube offers excellent weldability, whether in the annealed or solution-treated and partially aged conditions. Aging is achieved during post-weld heat treatment, ensuring robust joint integrity.
To prevent contamination from oxygen, nitrogen, and hydrogen, precautionary measures are essential. Fusion welding can be performed in an inert gas-filled chamber or with an inert gas tail shield over the molten metal and adjacent hot areas. Spot welding, seam welding, and flash welding can all be conducted without a protective atmosphere, facilitating versatile welding applications.
Special Considerations DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is susceptible to hydrogen contamination from improper pickling and absorption of oxygen, nitrogen, and carbon during processes like forging, heat treating, and brazing. This contamination may compromise ductility, increase notch sensitivity, and affect formability, necessitating stringent control measures.
