SES N 3224 Plastic Part Identification

Developed by Suzuki Motor Corporation as part of its polymer identification/marking standards, the “SES N 3224 Plastic Part Identification” standard is an automotive materials standard that specifies how plastic parts in vehicles should be identified and marked. This standard complements previous standards such as SES N 3220 and SES N 3223 by enabling each plastic component to be clearly traceable, classified, and managed throughout its lifecycle.

The main objective of the SES N 3224 standard is to ensure that each plastic part can be correctly identified in the following respects:

Type of material (e.g., PP, ABS, PA)
Additives or reinforcements (e.g., GF for glass fiber)
Manufacturer or supplier code
Production or batch information (if required)

This identification is usually done through molded markings, labels, or codes engraved on the part.

The basic requirements in the SES N 3223 standard are defined as follows:

Material identification marking: Plastic parts must include standardized material symbols. For example,
>PP-GF30<: Polypropylene containing 30% glass fiber.
>ABS<: Acrylonitrile butadiene styrene

These markings comply with international standards (e.g., ISO 11469 standard).

Location and visibility: Signage should have the following characteristics:
It should be clearly visible or easily accessible.
They should be placed in non-functional areas (to avoid affecting performance or aesthetics).
It must be durable for the entire lifespan of the vehicle.
Marking method: The preferred method is molding (embossing or engraving). Alternatives may include laser marking or ink printing (if permanent only).
Additional identification: Depending on original equipment manufacturer requirements, parts may also include:
Supplier identification code
Date / production batch
Part number or space number

In the automotive industry, the requirement for the SES N 3224 standard is based on a fundamental idea: every plastic part must be clearly identifiable throughout its entire lifecycle, from production to recycling. This standard is considered important for the following reasons:

Traceability and quality control: Modern vehicles contain thousands of plastic components from multiple suppliers. If a defect occurs, manufacturers need to quickly identify it:
Which material was used?
Which supplier produced it?
Which party did he/she come from?

Without proper identification,

Root cause analysis becomes slow or impossible.
Recalls are becoming more expensive and less targeted.

This standard enables fast and accurate traceability.

Recycling and environmental compliance: At the end of a vehicle's life, plastics must be properly separated and recycled.
Different plastics (PP, ABS, PA, etc.) cannot be mixed.
Incorrect sorting reduces recycling efficiency and material quality.

This standard

It provides clear material markings.
It supports compliance with environmental regulations (e.g., end-of-life vehicles directive).
It enables high-quality recycling and reuse.
Standardization across the supply chain: Automotive manufacturing involves global suppliers. Without a common standard,
Each supplier may use different marking systems.
Misinterpretation of the materials may occur.

This standard provides:

A uniform identification system
Clear communication between original equipment manufacturers and suppliers.
Maintenance and repair efficiency: During servicing or repair,
Technicians need to know the exact material.
Some plastics require specific specifications, such as adhesives, welding methods, and replacement procedures.

With accurate identification, repairs are faster and more accurate, and the risk of using the wrong materials is reduced.

Cost reduction: Poor identification leads to:
Sorting errors
Manufacturing defects
Inefficient recalls

This standard helps reduce waste, prevent rework, and increase production efficiency.

Regulatory and original equipment manufacturer compliance: Automotive manufacturers must meet the following:
International standards (e.g., ISO material marking guidelines).
Legal requirements regarding recyclability and material description.

This standard ensures compliance with these regulations and prepares for audits and certifications. With this standard, each component has an identity, problems can be traced, and sustainability goals can be achieved.

In conclusion, the SES N 3224 standard plays a critical role in ensuring that plastic components are identifiable, traceable, and recyclable. In modern automotive manufacturing, where sustainability, quality, and global supply chains are key, this standard helps maintain consistency, compliance, and efficiency from production to end-of-life.

In today's automotive industry, characterized by complex supply chains, stringent regulations, and sustainability goals, this standard is also critical for control, efficiency, and environmental responsibility.

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 3224 standard.