What material is 2A14 and what is 2A12

2A14 belongs to the national standard aluminum alloy, the implementation standard: GB T 3190-20082A14 aluminum plate is a metal material used in occasions requiring high strength and hardness (including high temperature). 2A14 series aluminum plate is characterized by high hardness, of which the original copper content is the highest, about 3-5%.

2A14 series aluminum plate belongs to aviation aluminum, which is not often used in conventional industry. There are few manufacturers of 2A14 series aluminum plates in China. The quality is not yet comparable to foreign countries.

Imported aluminum sheets are mainly supplied by South Korean and German manufacturers. With the development of China's aerospace industry, the production technology of 2A14 series aluminum plate will be further improved. Aircraft heavy, forgings, plates and extrusions, wheels and structural elements, first-stage fuel tanks and spacecraft parts for multi-stage rockets, truck frames and suspension system parts.

The chemical composition of 2A14 is shown in the following figure:

2A14 is widely used in aircraft structures (skin, skeleton, ribs, partitions, etc.) rivets, missile components, truck hubs, propeller elements and other structural parts as structural rivets with a working temperature of no more than 100 meters.

Material Name: Aluminum and Aluminum Alloy Extruded Bar (22mm, H112, T6 state) Grade: 2A14 Standard: GB T 3191-1998

Characteristics and scope of application: 2A14 belongs to duralumin alloy and forged aluminum alloy from the composition point of view, compared with 2A50, because of the higher copper content, so the strength is higher, the thermal strength is better, but the plasticity in the hot state is not as good as 2A50, the alloy has good machinability, good contact welding, spot welding and roll welding performance, arc welding.

and poor gas welding performance; It can be strengthened by heat treatment, and has an extrusion effect; The corrosion resistance is not high, and there is a tendency to corrode between inspections during artificial aging.

Chemical Composition: Aluminum Al: Residual Silicon Si:

Copper Cu : Magnesium Mg: Zinc Zn:

Manganese Mn: Titanium Ti: Nickel Ni:

Iron Fe: Note: Single:

Total: Mechanical properties. Tensile strength.

b (mpa): 440 elongation.

5 (%10 Note: Longitudinal mechanical properties of bar at room temperature Specimen size: bar diameter (diameter of inscribed circle of square bar and hexagonal bar) 22

Heat treatment specifications: 1) Homogenization annealing: heating 475 490; Keep warm for 12 14h; The furnace is cold.

2) Complete annealing: heating 350 400; With the effective thickness of the material, the holding time is 30 120min; Cool with the furnace at a speed of 30 to 50 h to 300 times, and then air cool. 3) Rapid annealing:

Heating 350 460 ; Hold time 30 120min; Air-cooled. 4) Quenching.

and aging: quenching 495 505, water cooled; The natural aging room temperature is 96h.

2A12 is an aluminum alloy material. 2A12 aluminum alloy.

It is a kind of high-strength duralumin, which can be strengthened by heat treatment, and 2A12 aluminum alloy has good weldability by spot welding, and is welded by gas welding and argon arc welding.

From time to time, there is a tendency to form intergranular cracks, and the machinability of 2A12 aluminum alloy is good after cold work hardening. The corrosion resistance is not high, and anodizing is often used.

Treatment and painting methods or aluminium cladding to the surface to improve corrosion resistance.

2A12 Features and Uses:

2A12 aluminum alloy plate is a kind of high-strength duralumin, which can be strengthened by heat treatment, annealed and hardened.

The plasticity is medium in the hot state, the weldability is good in spot welding, and the machinability of the alloy is good after quenching and cold work hardening, but it is poor in the annealed state. The corrosion resistance is not high, and anodizing and painting methods are often used to improve the corrosion resistance by adding an aluminum layer on the surface.

Uses: Mainly used to make various high-load parts and components, but excluding stamping parts and forgings, such as skeleton parts on aircraft, skins, partitions, wing ribs, spars, rivets and other working parts below 150 degrees.

2A12 (LY12) belongs to the national standard typical duralumin alloy, and the implementation standard.

gb /t 3190-2020

2A12 (LY12) aluminum alloy is a kind of high-strength duralumin, which can be strengthened by heat treatment; 2A12 aluminum alloy.

Spot welding has good weldability, using gas welding and argon arc welding.

There is a tendency to form intergranular cracks from time to time; The machinability of 2A12 aluminum alloy is good after cold work hardening. The corrosion resistance is not high, and anodizing is often used.

Treatment and painting methods or aluminium cladding to the surface to improve corrosion resistance. Purpose: Mainly used to make various high-load parts and components (but excluding stamping forgings) such as skeleton parts, skins, bulkheads, wing ribs, spars, rivets and other working parts below 150 on the aircraft.

The chemical composition of 2A12 (LY12) is shown below

2A12 Introduction to the material in this paragraph:

What is 2A12 material: 2A12 is a typical duralumin alloy in the aluminum-copper-magnesium series, with reasonable composition and good comprehensive properties. This alloy is produced in many countries and is the most used in duralumin.

The characteristics of this alloy are: high strength, certain heat resistance, can be used as a working part below 150 °C. At temperatures above 125°C, alloy 2024 is stronger than alloy 7075.

The formability is relatively good in the hot state, annealing and new quenching state, and the heat treatment strengthening effect is remarkable, but the heat treatment process is strict. The corrosion resistance is poor, but it can be effectively protected by cladding with pure aluminum; Cracks are easy to occur during welding, but they can be welded or riveted with a special process. It is widely used in aircraft structures, rivets, truck wheels, propeller elements and other structural parts.

2A14 belongs to the national standard aluminum alloy and implements the standard.

gb/t 3190-2008

2A14 aluminum sheet is a metal material used in applications that require high strength and hardness, including high temperatures. 2A14 series aluminum plate is characterized by high hardness, among which the copper content is the highest, about 3-5%. 2A14 series aluminum plate belongs to aviation aluminum, which is not often used in conventional industry.

There are few manufacturers of 2A14 series aluminum plates in China. The quality is not yet comparable to foreign countries. Imported aluminum sheets are mainly supplied by South Korean and German manufacturers.

With our country's aerospace.

The development of the business, the production technology of the 2A14 series of aluminum sheets.

will be further improved. Aircraft heavy, forgings, plates and extrusion materials, wheels and structural elements, first-stage fuel tanks and spacecraft parts for multi-stage rockets, truck frames and suspension system parts.

The chemical composition of 2A14 is shown in the following figure:

2A14 is widely used in aircraft structures (skins, skeletons, ribs, bulkheads, etc.) rivets, missile components, truck hubs, propellers.

Elements and other structural parts are used as structural rivets with a working temperature of not more than 100 °C.

2A14 aluminum alloy is a kind of material belonging to the ridge duralumin alloy, the main chemical composition is zinc, iron, magnesium, aluminum, etc., with good machinability, electric register macro resistance, spot welding and seam weldability Sakurazi good energy.

Material name: aluminum and aluminum alloy extruded bar.

Characteristics and scope of application: 2A14 belongs to duralumin alloy and forged aluminum alloy, with high copper content, high strength, good thermal strength, but the plasticity in the hot state is general, this alloy has good machinability, good contact welding, spot welding and rolling welding performance, poor arc welding and gas welding performance, can be strengthened by heat treatment, has extrusion effect, corrosion resistance is not high, and has an indirect corrosion tendency during artificial aging.

2A12 is a high-strength duralumin that can be strengthened by heat treatment. 2A12 aluminum alloy spot welding has good weldability, and there is a tendency to form intergranular cracks when gas welding and argon arc welding are used. The machinability of 2A12 aluminum alloy is good after cold work hardening.

2A12 aluminum alloy is mainly used to make various high-load parts and components (but excluding stamping parts and forgings), such as skeleton parts on the aircraft, skins, spars, spars, rivets and other working parts below 150.