Alloy for crash applications with high strength and excellent deformation capacity

The alloy trimal®-53 (AlMgSi) is suitable for crash-relevant structural components with high strength and excellent deformation capacity. The wrought alloy from the 6xxx series is corrosion resistant and homogenized in a way that creates a microstructure with predominantly round structured phases. This also has a positive influence on the subsequent forming process. 

The alloy can be adapted to specific customer requirements.

Aluminium wrought alloys of the 6xxx series are established in automotive applications. They exhibit good strength and formability and are corrosion resistant. The alloy group is widely used in many application areas and can be easily recycled. The main alloying elements magnesium and silicon ensure the basic strength of these alloys. Other elements provide a finely grained structure and a comparatively benevolent quenching behavior.

Chemical composition

The following table shows a reference analysis for the described material in weight percent. Customer specifications may vary

% Si Fe Cu Mn Mg Cr
Min. 0.45       0.45  
Max. 0.90 0.25 0.20 0.60 0.90 0.20
% Zn Ti V o.e. o.t. other
Min.           AL
Max. 0.15 0.10 0.20 0.03 0.1

Mechanical properties

The mechanical properties shown below are based on quasi-static tensile tests using flat bar tension specimens taken from extruded profiles. The values are considered reference values for the use of this alloy and can vary in individual applications.

Temper Yield strength Rp0.2 MPa Tensile strength Rm MPa Elongation A %
T7 ≥ 250 ≥ 270 ≥ 10

T7 describes the overaged condition after extrusion and artificial aging. Information on other heat treatment conditions can be provided on request.


The alloy achieves strengths up to ≥ 270 MPa. At this level of strength, reaching the required compression behavior represents a particular challenge. With an elongation of ≥ 10%, the alloy trimal®-53 shows an excellent performance. In comparison to conventional alloys, higher component strengths can be achieved with the same wall thickness. The wall thickness of components can also be reduced while maintaining the same strength, thus reducing the weight of the component. This enables our customers to use trimal®-53 for the most diverse dimensioning objectives. Structural components can be produced at low cost and thermally or mechanically joined with other materials, e.g. cast nodes. The alloy is particularly suitable for extruded profiles in accordance with BMW delivery specifications (GS93047.HST, formerly WS02003.TypB), but also for other application areas (e.g. VW-TL116. C24, DBL-4919.30).

trimal®-53 product information sheet

Download the product information sheet for our trimal®-53 alloy here.


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TRIMET Aluminium SE

Aluminiumallee 145356 EssenGermanyTelephone: +49 201 3660Fax: +49 201 366506Mail

Dr.-Ing. Marcel Rosefort

TRIMET Aluminium SE

Aluminiumallee 145356 EssenGermanyTelephone: +49 201 366154Fax: +49 201 36621154Mail