6063, Aluminium alloy
Chemical composition
Nominal chemical composition
Al-0,7Mg-0,4Si
Chemical composition according to EN 573-3
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 Mg2And. 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
Typical mechanical properties
Tensile strength, tensile strength in tension – look. table 3 [1].
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 to 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