6013

Aluminum alloy 6013 is a relatively new medium-strength heat-treatable alloy. The strengthening of its heat treatment aging comes from the precipitation of magnesium-silicon and magnesium-silicon-copper-aluminum phases. Although 6013 alloy has good corrosion resistance, it still has a higher tendency of intergranular corrosion compared with 6061 alloy. Under improper processing, it is expected to lead to a decrease in fatigue resistance, ductility and strength.

6013AlloyCharacteristicAdvantage
6013-T4

  • Formability is equivalent to 2024-O.

  • The subsequent natural aging is highly sensitive to grain growth at strains of 2% to 13% prior to solution heat treatment.


  • Remains relatively formability after several months at ambient temperature. In contrast, 2024-W must consider the refrigeration process to maintain formability.

  • Aging heat treatment can be performed directly after forming without the need for solid solution heat treatment again, which can reduce the degree of deformation of the product.
6013-T6

  • Its yield strength, fracture toughness and fatigue resistance are similar to 2024-T3 plate.


  • Better corrosion resistance and lower density than 2024-T3

Main compositionMgSiCuMnAl
60130.900.800.850.5Balance
6013 composition (wt.%)MinMax
Mg0.81.0
Cu0.61.1
Si0.61.0
Mn0.200.8
Fe--0.50
Zn--0.25
Cr--0.10
Ti--0.10
Other impurities
each--0.05
total--0.15
AlBalance

Mechanical properties:

AlloyT.S. (MPa)Y.S. (MPa)Elongation (%)Density (gcm3)
6013-T651≥379≥359≥52.71

Application:
Due to the insignificant natural aging hardening in the T4 temper and excellent formability, 6013 alloy can be subjected to aging heat treatment directly after forming to obtain peak strength. The main application is as a candidate material for aircraft skins and automotive parts such as 2024 sheets.
Due to its higher strength than ordinary 6xxx alloys and good weldability, 6013 alloy is also widely used in bicycle frames, wheel frames, handlebars, etc.

References:

1.AIWT, Aerospace Structure Metals Handbook, Nonferrous Alloys, 6013Al

2.Matweb, datasheet.


Standards

AMS 4347、AMS4216

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