6063, Aluminium alloy

Chemical composition

Nominal chemical composition

Al-0,7Mg-0,4Si

Chemical composition according to EN 573-3

6063ximsostavTable 1

designations

  • EN 573-3: EN AW-6063
  • USA standard ANSI H35.1: 6063
  • Teal Sheet (Aluminum Association): 6063
  • Unified Numbering System (UNS): A96063
  • ISO 209: 6063 (to 2007 Year by ISO 209-1 – AlMg0,7Si)
  • Japan: A6063
  • DIN 1725-1 (canceled): none

Metallurgical characteristics

  • series – 6xxx
  • Wrought
  • Thermally hardenable
  • The main alloying elements – magnesium and silicon, without special additives.
  • hardening phase – intermetallic compound Mg2Si. At nominal chemical composition and complete dissolution of the alloying elements of this amount of the reinforcing compound is about 1 %, without excessive silicon content.
  • Any other elements considered as impurities.
  • The absence of corrective additives can create difficulties in controlling grain growth after heating for quenching and quenching [2].
  • Typical conditions: T5, T6 and T66.
  • The place of alloy 6063 among other 6xxx series alloys are shown . in the figure below.

Alloy analog AD31

Alloy AD31 GOST 4784-97:

The iron content 0,5 % instead 0,35 %

Alloy 6063 in GOST 22233-2001

  • The maximum magnesium content 0,60 % instead 0,9 %
  • The minimum content of silicon 0,30 % instead 0,20 %

Typical applications

pressed aluminum profiles:

  • Enclosing constructions, such as windows, facade constructions, enter the store, winter gardens.
  • tubes, rail, sport equipment.
  • irrigation pipes
  • Bodies of trucks and vans [1]

The mechanical properties of the alloy 6063

Normalized mechanical properties as per EN 755-2

6063-mexsvoyistva-EN573Table 2

Typical mechanical properties

Tensile strength, tensile strength in tension – look. table 3 [1].

6063-mexsvoyistva-typicalTable 3

yield strength

See. table 3.

Relative extension

Elongation of a fivefold sample (A, d5) - cm. table 3.

Hardness

Brinell and Rockwell - see. table 3.

Poisson's ratio

0,33.

Elastic modulus

Tensile modulus - 68300 MPa.
shear modulus - 25800 MPa.
compressive modulus - 69700 MPa.

Physical properties

Density

2,69 g / cm3 at 20 ° C

melting and crystallization temperature

Alloy liquidus temperature 6063: 655 ° C

the solidus temperature of the alloy 6063: 615 ° C

The coefficient of linear thermal expansion

Linear: 23,4 μm / (m ° C) in the range from 20 by 100 ° C.
Volume: 67∙10-6 m3/(m3 ∙ ° С)

technological characteristics

Weldability

Good arc-welded under inert gas, in particular, argon arc welding, as non-consumable electrode (GTAW-TIG), and consumable electrode (GMWA-MIG). Conventional welding alloy - 4043.

annealing temperature

415 ° C.

quenching temperature

520 ° C.

artificial aging

175 ° C. 8 hours.

bending

In the state T4.

Modifications

Aluminum alloy 6063

  • 0,15-0,35 % Fe; 0,30-0,6 % And; 0,6-0,9 % Mg
  • Strength properties slightly higher, than an alloy 6063 (on 15-25 MPa for condition T6) without reducing the quality of anodizing

Aluminium alloy 6463

  • 0,15 % Fe; 0,20 % Cu
  • Strength properties below, than an alloy 6063
  • It is used to obtain a shiny surface anodized.

Sources:
1) Aluminum and Aluminum Alloys, ed. J. R. Quote
2) IN 573-3
3) IN 755-2

In Handbook of deformable alloys

See. also:
Alloy AD31 and its foreign counterparts
Aluminum profiles of alloy AD31 (6063)
aluminum alloys 6060, 6063 and AD31