SES N 3134 Aluminum Extrusion Materials

Developed by Suzuki Motor Corporation as part of aluminum material standards, the “SES N 3134 Aluminum Extrusion Materials” standard describes the requirements for aluminum extrusion materials used in vehicle components. This standard defines the material properties, production conditions, and quality criteria for extruded aluminum profiles.

The automotive industry is undergoing a major transformation driven by the need for lightweight, fuel-efficient, and environmentally friendly vehicles. One of the key materials enabling this change is aluminum extrusion. Aluminum extrusion materials are becoming increasingly important in modern vehicle design, particularly in electric vehicles, by providing an optimal balance between strength, weight reduction, design flexibility, and cost efficiency.

Aluminum extrusion is a manufacturing process in which heated aluminum billets are passed through a die to produce components with a consistent cross-sectional profile. This process allows engineers to create complex geometries, including hollow sections and multifunctional profiles, that are difficult or impossible to achieve with traditional steel forming methods.

Common alloys used in automotive extrusion are from the 6xxx series. These alloys offer excellent strength, corrosion resistance, and weldability.

The advantages of aluminum extrusion materials in automotive applications are as follows:

Lightweight construction: Reducing vehicle weight is crucial for improving fuel efficiency and battery performance. Aluminum is significantly lighter than steel, allowing car manufacturers to:
Reducing fuel consumption in vehicles with internal combustion engines.
Extending the driving range of electric vehicles.
High strength-to-weight ratio: Extruded aluminum components can be designed to provide high mechanical strength while maintaining low mass, making them ideal for structural applications.
Design flexibility: Extrusion allows multiple functions to be integrated into a single component.
Conduits for cabling or cooling.
Reinforcement ribs
Assembly specifications

This reduces the number of parts and simplifies assembly.

Corrosion resistance: Aluminum naturally forms a protective oxide layer, making it suitable for prolonged exposure to harsh environments without significant degradation.
Energy absorption and safety: Extruded profiles can be designed to efficiently absorb collision energy, enhancing passenger safety. This makes them valuable in the following areas:
Collision boxes
Side impact beams

The main automotive applications for extruded materials conforming to the SES N 3134 standard are as follows:

Structural components: Aluminum extrusions are commonly used in load-bearing structures:
Front and rear collision management systems
Subframes and longitudinal beams
Space frames in premium and electric vehicles.
Body and external parts
Roof rails
Door frames
Window frames

These components benefit from aluminum's formability and aesthetic surface quality.

Electric vehicle systems: Extrusions play a crucial role in electric vehicle design.
Battery housings
Cooling plates
Structural battery trays

They help improve thermal management and structural integrity.

Functional and thermal components
Heat spreaders for electronic systems.
Engine housings
Mounting rails and brackets

The production and processing aspects are as follows:

Heat treatment: Extruded aluminum is often heat-treated to achieve the desired mechanical properties.
Joining techniques:
Source
Mechanical connection
Joining with adhesive
Surface treatments:
Anodized coating
Powder coating
Painting

These improve corrosion resistance and appearance.

The SES N 3134 standard defines the following requirements:

Material composition

Mechanical properties
Dimensional tolerances
Surface quality and tests

They ensure consistency, safety, and reliability in automotive supply chains.

The importance of aluminum extrusion materials is expected to increase for the following reasons:

The increasing use of electric vehicles
Stricter emissions regulations
Demand for lightweight multi-material vehicle architectures.

Innovations such as high-strength alloys, hybrid structures, and advanced extrusion techniques are further expanding their applications.

Consequently, aluminum extrusion materials have become a cornerstone of modern automotive engineering. Their ability to combine lightweight performance, structural strength, and design flexibility makes them indispensable in both conventional and electric vehicles. As the industry continues to evolve, aluminum extrusions play a significant role in shaping the future of mobility.

The SES N 3134 standard covers the following:

Material grades: Aluminum alloys optimized for extrusion (mostly 6xxx series)
Defined chemical composition limits

Mechanical properties include the following:

Tensile strength
Yield strength
Elongation
Fatigue performance

These features enable the parts to withstand dynamic automotive loads.

This standard also covers the following:

Heat treatment conditions
Common tempers
Monitoring aging and quenching processes for consistent characteristics.
Dimensional tolerances:
Profile accuracy
Linearity, bending, and wall thickness control.
Surface quality:
Surface defects (scratches, cracks)
Corrosion resistance
Coating compatibility (anodization, painting)
Tests and examinations:
Mechanical tests (tensile, hardness)
Metallurgical analysis
Non-destructive testing (if necessary)

The basic properties of extruded aluminum are defined in the SES N 3134 standard as follows:

Lightweight yet strong: Aluminum is approximately 33 percent lighter than steel while maintaining good structural strength.
Excellent formability: Enables complex hollow and multi-chambered profiles.
Corrosion resistance: Suitable for long-term automotive use.
Energy absorption: Important for collision structures.

Aluminum extrusions are increasingly used because they reduce vehicle weight, improve fuel efficiency, and lower emissions.

The SES N 3134 standard is a fundamental tool that ensures aluminum extrusion materials perform reliably in demanding automotive environments. This standard is considered important for the following reasons:

Ensures consistent material quality.
It supports vehicle safety.
It makes lightweight engineering possible.
It guarantees production compatibility.
It checks dimensional accuracy.
It increases durability and corrosion resistance.
It reduces costs and production risks.
It facilitates supplier qualification and auditing.
Ensures compliance with legal regulations and original equipment compatibility.

For many years, our organization, with its competent and experienced team, has been understanding the needs of its clients, providing the advanced testing services they require, and assisting them in the establishment, implementation, and improvement of management systems. Within this framework, we also provide testing services compliant with the SES N 3134 standard.