Wrought aluminium alloys

6005A aluminium alloy

Chemical composition

Nominal chemical composition of alloy 6005A

Al-0,7Si-0,6Mg-MnCr

The chemical composition of alloy 6005A

Table 1 – Table fragment 6 from EN 573-3. The chemical composition of 6005A alloy

Alloy designation 6005A

  • EN 573-3: EN AW-6005A и EN AW-Al SiMg (A)
  • International Registration (Teal Sheats – Aluminum Association): 6005A
  • Unified Numbering System (UNS): А96005A
  • ISO 209:2007: 6005A
  • DIN 1725-1 (canceled): AlMgSi0.7 and 3.3210

Metallurgical characteristics

  • Wrought
  • Heat hardenable
  • It refers to alloys with an average level of strength
  • The strengthening component is the intermetallic compound Mg2Si. When the proportion of the nominal chemical composition of this compound is 0,9 %, wherein the excess silicon content is 0,4 %.
  • Manganese and chromium provide resistance to crystallization, which ensures control of the morphology and grain size during heat treatments in the technological cycle [2]
  • Typical material condition - T6: extruded sections are cooled with water after heating for quenching at 530 ºC and artificial aging at 175 ° C within 8 hours [2]
  • Location 6005A alloy among other alloys 6xxx series – look. picture below.

Fig. 1 – The most used series alloys 6000 [3]

Typical applications

  • Extruded profiles and pipes, which require a higher level of strength, than can provide alloy 6063
  • stairs
  • frame details, seats and suspension of passenger cars

strength properties

Requirements for the mechanical properties of alloy 6005A

Table 2 – Requirements for the mechanical properties of pressed products from alloy 6005A according to EN 755-2

Physical properties

Density

2,70 g / cm3 at 20 ° C

Thermal properties

Interval melting temperature

605 – 655 ° C

Coefficient of thermal expansion

Linear: 23,6 μm / (m ° C) in the range from 20 to 100 ° C.

Technological properties

  • Compressibility: medium
  • Machining by cutting: medium to mediocre
  • Weldability: good
  • Formability: medium

Alloy modification

  • Alloy 6005, base
  • Cplav 6005B.

Sources:

  1. Aluminum and Aluminum Alloys, ed. J. R. Quote - AMS International, 1993
  2. Aluminium & Car: design, technology, innovation – Edimet Spa, 2005
  3. Influence of Al Microstructure on Hard Anodising Quality – Profile Material / Tom Hauge, Hydro Aluminium, Norway – 2014

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