Daxun Alloy's pure titanium Grade 1 titanium tubes include:
Seamless titanium tubes and welded titanium tubes, both crafted for superior ductility and exceptional cold formability, ideal for deep drawing applications. Grade 1 titanium tubes are renowned for their robust general and seawater corrosion resistance and their excellent resilience against oxidizing, neutral, and mildly reducing media (solutions), including chlorides.
With its remarkably low density (approximately half that of nickel-based alloys), high strength, lightweight nature, and exceptional corrosion resistance, titanium proves to be an outstanding choice for a myriad of challenging chemical environments. Compliance with standards includes: 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 grade is the most commonly utilized titanium tube for industrial applications, offering a perfect balance of moderate strength and excellent ductility. Notably, it excels in highly oxidizing and mildly reducing conditions (including chlorides), providing top-notch corrosion resistance. Grade 2 titanium is a preferred material 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 adapts exceptionally well to cold forming through standard methods. Its machinability is high, but special care must be taken to keep tools sharp and utilize abundant coolant. Similar to machining austenitic stainless steels, it requires deep and continuous cuts with controlled feeds and speeds for optimal results.
Stock Availability
Daxun Alloys maintains an extensive inventory of CP 2 Grade Titanium Seamless and Welded Pipes in various dimensions to meet diverse customer requirements.
Weight Reduction
CP 2 grade titanium tubes are characterized by their low density and high strength-to-weight ratio, making them ideal for applications that demand weight reduction without compromising strength. These tubes are cold formable, possess excellent ductility, and can be welded using standard TIG and MIG processes, albeit with the necessity for inert gas shielding to prevent weld zone embrittlement.
Crystal Structure
At ambient 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 transitions to a beta (body-centered cubic) form. This transformation temperature can vary with the type and quantity of impurities or alloying elements present. These additions also shift the single equilibrium transformation temperature into distinct alpha and beta zones. Below the alpha transformation temperature, the alloy remains alpha, and above the beta transformation temperature, it remains beta. Between these temperatures, both forms coexist. For grade 2 titanium, typical transformation temperatures are 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 are meticulously produced from hollow blanks through hot extrusion or oblique rolling and piercing, followed by repeated cold rolling stages. Throughout the manufacturing process, the tubes maintain continuous perimeters. The comprehensive production sequence includes: sponge titanium vacuum arc melting, ingot blanking to generate hollow blanks, cleaning, cutting, 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 crafted from annealed flat-rolled steel plate or steel strip using the advanced automatic arc welding (TIG) process. The meticulous production steps 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. Welded pipes undergo at least one stress relief heat treatment post-forming and welding to ensure durability. Note, Daxun utilizes any filler materials during the welding process, guaranteeing optimal quality and consistency.
Ti-6Al-4V Titanium Pipe - Premier Grade 5 Titanium Tube for High-Performance Applications
Titanium Alloy - (UNS R56400) for Superior Strength and Durability
Introduction
DAXUN Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400) stands as the pinnacle of titanium alloys. This duplex alpha+beta titanium alloy, fortified with aluminum as the alpha stabilizer and vanadium as the beta stabilizer, boasts exceptional strength and versatility. It operates effectively at temperatures as low as 800°F (427°C). ATI Ti-6Al-4V, Grade 5 alloy is ideal for processes such as annealing, solution treating, and aging. Its applications span from compressor blades, disks, and rings for jet engines, to fuselage and space capsule components, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and critical forgings, all demanding a high strength-to-weight ratio.
The alloy is initially crafted using cutting-edge techniques such as vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM). It undergoes one or two vacuum arc remelting steps to ensure impeccable quality.
Specifications
• ASTE B338 - Standard for Heat Treatable Titanium Tubes
• AMS 4928 - Specifications for Forgings and Forging Stock (Annealed)
• AMS 4965 - Standards for Forgings (Solution Treated and Aged)
• AMS 4967 - Criteria for Forgings (Annealed, Heat Treatable)
Physical Properties
Ti-6Al-4V Titanium Tube Melting Range: An impressive 2,800-3,000°F (1,538 - 1,649°C)
Density: A robust 0.160 lb/in3; 4.47 g/cm3 for optimal performance
Beta Transus Temperature: 1830°F (± 25°); 999°C (± 14°) ensuring material stability
Heat Treatment
Annealed at a range of 1,700-1,900°F (927 - 1,038°C) to achieve high hardness, tensile strength, and fatigue strength.
DAXUN 6-4 Grade 5 Titanium Tube offers versatile heat treatment options to meet varied requirements.
1. Annealing: Performed at 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, then cooled in air or a furnace.
3. Solution Heat Treating: Executed at 1,675 -1,750°F; (913 - 954°C) for 1 hour, followed by a water quench.
4. Aging: Carried out at 975 -1,025°F; (524 - 552°C) for 4 to 8 hours, then air-cooled.
Optimum Properties
Optimal properties are achieved with small cross sections and rapid quenching in the solution treated and aged condition. Larger cross-sections and/or delayed quenching may result in properties that are less than optimal.
Hardness
In the annealed state, typical hardness ranges from Rockwell C 30-34, while in the solution treated and aged condition, it approximately reaches Rockwell C 35-39.
Forgeability/Formability
The DAXUN Ti-6Al-4V Titanium Tube, also known as Grade 5 Titanium Tube, is expertly forged at a high temperature of 1,750°F (954°C), with its final forging temperature set at 1,450°F (788°C). For optimal performance, a reduction of at least 35% is highly recommended.
While the DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, presents challenges in forming at room temperature-even when annealed-it excels under severe forming operations such as bending or stretching when annealed material is handled at impressive temperatures up to 1,200°F (649°C) without altering its mechanical properties. Creep forming is advisable for hot sizing or forming processes within the temperature range of 1,000 to 1,200°F (538 to 649°C).
Machinability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, can be meticulously machined employing techniques akin to those used for austenitic stainless steels. This includes the use of slow speeds, high feeds, robust tool rigidity, and ample amounts of non-chlorinated cutting fluids to ensure precision and quality.
Weldability
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, demonstrates excellent weldability in both the annealed or solution and partially aged conditions. The aging process is accomplished during post-weld heat treatment.
Special precautions are necessary to prevent contamination from oxygen, nitrogen, and hydrogen. Fusion welding should be conducted in an inert gas-filled chamber or with the use of an inert gas tail shield to protect the molten metal and surrounding hot zones. Techniques such as spot welding, seam welding, and flash welding can be performed without requiring a protective atmosphere.
Special Considerations
The DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube, must be handled with care to avoid contamination from hydrogen during improper pickling, as well as from the absorption of oxygen, nitrogen, and carbon during processes such as forging, heat treating, and brazing. Such contamination can severely reduce ductility and negatively impact notch sensitivity and formability.
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