2A12 Aircraft Aerospace Grade Aluminum Plate Sheet

Alloy

Alloy series

Main features

Σb Value/MPa

Temperature/℃

2A12

Al-Cu-Mg

The heat-treated reinforced alloy has good plastic forming ability and machinability, and it can produce all kinds of semi-finished products. The corrosion resistance is poor, the welding performance is good, and the welding performance is poor.

345～440

<150

         Technical indexes of common 2A14 aluminum alloy

Alloy

Type

Temper

δor d/mm

σ_b/MPa

σ_{p 0.2}/MPa

δ/%

K_{IC or} K_C/MPa

Technical Standard

2A12

Clad aluminum sheet

T4

0.3~6.5

405~425

270~275

13

－

GJB2053--1994

T62

0.5~4.0

390

305

6

－

2A12 Aircraft aerospace grade aluminum plate

T4

> 10~25

420

275

7

－

GJB 2662--1996

> 25~40

390

255

5

T351

> 12~25

435

290

7

－

GJB 1741--1993

> 25~40

425

290

6

Alloy

Temper

Aircraft Model

Application parts and typical parts

2A12

Aluminum sheet： T4、T62

Aluminum plate： T4、T351

Y8， Y12，J6，J7，J8

The central wing and aileron wing, connectors, wing stringers, fork, pins, washers, curved skin, central wing strip, a base plate and a cover plate

2A14 welding property

Alloy

Resistance welding

Melting welding

Argon arc welding

Note

2A12

Good

Worse

Worse

For gas welding and argon arc welding of aluminum alloy as solder, tend to form crystalline cracks; 4A01 alloy solder, forming cracks tend to be significantly reduced, but the strength of welded joint is greatly reduced, such as heat treatment after welding, the joint strength is close to the substrate, but the ductility decreases.