48-OT3Titanium Alloy Plate

48-OT3 (TA5) titanium alloy is a medium-strength α-type titanium alloy, which contains 4% α stable element Al and trace element B, of which Al strengthens the alloy and B can refine the alloy structure. The alloy cannot be heat-treated and strengthened and is usually used in an annealed state. The alloy has excellent welding properties and corrosion resistance, allowing it to undergo conventional pressure and machining.

1. Chemical composition

Table 1 Chemical composition (mass fraction/%).

2. Physical and chemical properties
The density was ρ=4.43g/cm3.
The thermal conductivity is shown in Table 2 .

Specific heat capacity is shown in Table 3.

The linear expansion coefficient is shown in Table 4.

Non-magnetic.
Oxidation Resistance: Similar to Gr.6 alloy.
Corrosion resistance: Corrosion resistance in seawater is better than aluminum alloys, stainless steel, and nickel-based alloys. Generally, there is no pitting corrosion, intergranular corrosion, etc. in use.

3. Mechanical properties
Tensile properties: The tensile properties of 48-OT3 titanium alloy sheets at various temperatures are shown in Table 5.

Welding performance: 48-OT3 titanium alloy plate has excellent welding performance and can perform argon arc welding and electron beam welding.

The chemical composition of TA5 titanium alloy ingots with a diameter of 660mm produced by three vacuum melting meets the requirements of GB/T3620.1 standard, and the phase transition point is tested by metallographic method at about 1000°C. After the ingot is forged into a billet of 120mm×800mm× 1000mm for rolling. The rolling process adopts the self-developed uncovered hot rolling process A and multi-pass cold rolling process B, and both hot and cold rolling are carried out on a 1450mm four-roll reversible rolling mill. The specific process route is as follows:

Process A: The slab is hot-rolled to 5mm→ the plate is cut and cut→ 2 pieces of titanium plates are welded into stacked rolling wraps→ heated at 930°C→ annealed to 3mm→ 650°C→ surface treatment→ cut into 3mm×1000mm× 2000mm finished plates.

Process B: The slab is hot-rolled to 3.5mm→800°C, then crystallized and annealed→ surface treatment→ and the finished product is 3mm→650°C annealing →→ the surface treatment cut into 3mm×1000mm×2000mm.

48-OT3 titanium alloy plate has excellent corrosion resistance and welding properties, and is used in the manufacture of ship chimney skins, masts and other parts used in marine environments, and is widely used in the shipbuilding industry and marine engineering environment.

Hot rolling and cold rolling are common processing methods in the industrial production of titanium alloy plates, usually for medium and heavy plates above 4mm, hot rolling can be directly used to roll to the thickness of the finished product through 1~3 rolling courses, while for thin plates below 3mm, hot rolling or multi-rolling cold rolling can be used for processing and production. At present, the 48-OT3 titanium alloy plate is mainly changed by changing a certain process parameter in rolling, forging or heat treatment to change its influence on the alloy structure and properties.

Product packaging: 48-OT3 titanium alloy plate is wrapped in moisture-proof paper and plastic film for boards with a thickness greater than 4mm, and then packaged in wooden boxes or iron sheets; Boards with a thickness of less than 4mm are separated with moisture-proof paper and wrapped in plastic film before being packed into wooden or iron boxes.

After-sales service: Each batch of products comes with a quality certificate providing 48-OT3 titanium alloy plates, and indicating product information, inspection results, etc., to ensure product quality and traceability.

Provide customized services: Support customized packaging solutions according to customer needs, such as special markings, protective packaging. Support for technical services, such as advice on product application, processing, installation, etc.

Note: The specific product parameters and packaging schemes need to be confirmed with the supplier according to the procurement.

Shaanxi Hangyu Nonferrous Metals Processing Co., Ltd. was established in December 2005, is a high-tech enterprise focusing on the forging of titanium and titanium alloys, nickel, zirconium and other non-ferrous metal materials and the deep processing of precision parts, with a product range involving aerospace, weapons, marine equipment and petrochemical industries. The production capacity of titanium and titanium alloy bars, forgings and plates reaches 3,000 tons/year, and the machining capacity of non-ferrous metal precision parts reaches 500,000 pieces/year, and has the deep processing capacity of the whole industry chain from titanium and titanium alloy raw materials to precision parts.

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