Daxun Alloy's Pure Grade 1 Titanium Tubes Include:
Seamless titanium tubes and welded titanium tubes, renowned for their exceptional ductility and cold formability, making them ideal for deep drawing applications. Grade 1 titanium tubes are celebrated for their excellent resistance to general and seawater corrosion, as well as their remarkable resilience against oxidizing, neutral, and slightly reducing media (including chlorides).
Titanium's unique properties-low density (about half that of nickel-based alloys), high strength, lightweight, and outstanding corrosion resistance-make it an unparalleled choice for demanding chemical environments. Compliance with 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)

Grade 2 titanium tubes are the industry standard for a balanced combination of moderate strength and excellent ductility. They offer superb corrosion resistance in both highly oxidizing and slightly reducing environments (including chlorides). Their versatility extends to chemical and offshore industries, aircraft manufacturing, heat exchangers, hypochlorite systems, firewater systems, ballast water systems, CPI equipment, and industrial and aerospace components, where strength coupled with ease of forming is paramount.

Fabrication

Stock Availability

Weight Reduction

Crystal Structure

Grade 2 Titanium Seamless Pipe Manufacturing Process

Grade 2 Titanium Welded Pipe Manufacturing Process

Daxun's ASTM B338 Grade 2 titanium welded pipe is meticulously crafted from annealed flat-rolled steel plate or steel strip utilizing advanced automatic arc welding (TIG) technology. The sophisticated 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, eddy current testing, caliper marking, cutting, ultrasonic testing, hydrostatic testing, final inspection, and packaging. Each welded pipe undergoes a mandatory stress relief heat treatment post-forming and welding. Daxun ensures the use of high-grade filler materials during the welding process, guaranteeing superior quality and durability.

Ti-6Al-4V Titanium Pipe- Grade 5 Titanium Tube

Titanium Alloy - (UNS R56400)
Introduction
DAXUN's Ti-6Al-4V Titanium Tube, Grade 5 (UNS R56400) stands as the epitome of titanium alloys. This duplex alpha+beta titanium alloy is ingeniously stabilized with aluminum and vanadium. Known for its remarkable strength, this alloy performs efficiently at temperatures as low as 800°F (427°C). ATI's Ti-6Al-4V, Grade 5 alloy is versatile, serving purposes such as annealing, solution treating, and aging. Its applications are vast, including compressor blades, disks, and rings for jet engines, fuselage and space capsule components, pressure vessels, *** cases, helicopter rotor hubs, fasteners, and critical forgings that demand a high strength-to-weight ratio.
The alloy boasts an initial melting process that leverages vacuum arc (VAR), electron beam (EB), or plasma arc hearth melting (PAM) techniques, with remelting performed through one or two vacuum arc steps, ensuring the highest 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 1,700-1,900°F (927 - 1,038°C) to achieve superior hardness, tensile strength, and fatigue strength.
DAXUN 6-4 Grade 5 Titanium Tube can undergo a variety of heat treatments to meet diverse requirements.
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: Conducted at 1,000 -1,200°F (538 - 649°C) for 1 to 8 hours, with air or furnace cooling.
3. Solution Heat Treating: Executed at 1,675 -1,750°F (913 - 954°C) for 1 hour, then water quenched.
4. Aging: Conducted at 975 -1,025°F (524 - 552°C) for 4 to 8 hours, followed by air cooling.

Optimum Properties

For optimal mechanical properties, small cross sections should be rapidly quenched in the solution treated and aged condition. Larger cross-section sizes or delayed quenching may result in suboptimal properties.

Hardness

In the annealed condition, the typical hardness is Rockwell C 30-34, while in the solution treated and aged condition, it reaches 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), with a final forging phase occurring at 1,450°F (788°C). For optimal results, a significant reduction of no less than 35% is highly recommended.

DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube presents challenges when forming at room temperature, even after annealing. Thus, severe forming operations, such as bending or stretching, are best conducted on the annealed material at elevated temperatures up to 1,200°F (649°C) to maintain its mechanical properties. Creep forming is an ideal method for hot sizing or forming within the temperature range of 1,000 to 1,200°F (538 to 649°C).

Machinability

DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube can be efficiently machined using techniques suited for austenitic stainless steels. Employing slow speeds, high feeds, robust tool rigidity, and generous quantities of non-chlorinated cutting fluids ensures optimal machining performance.

Weldability

DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube is highly weldable whether in the annealed condition or after solution and partial aging treatments, with post-weld aging conducted during heat treatment.

It is crucial to prevent contamination from oxygen, nitrogen, and hydrogen. Fusion welding should be performed within an inert gas-filled chamber, or by utilizing an inert gas tail shield over the molten metal and nearby hot zones. Techniques such as spot welding, seam welding, and flash welding can be successfully executed without a protective atmosphere.

Special Considerations

DAXUN Ti-6Al-4V Titanium Tube, Grade 5 Titanium Tube must be handled with care to avoid contamination with hydrogen, especially during improper pickling, and the absorption of oxygen, nitrogen, and carbon during processes like forging, heat treating, and brazing. Such contamination can significantly reduce ductility, negatively impacting notch sensitivity and formability.