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[Law] International Material Data System
16/06/2026
What is IMDS?
Those familiar with automotive parts manufacturing or surface treatment likely have some understanding of this system, but for beginners, let's introduce it further.
The International Material Data System (IMDS) was initially established primarily for data entry, aggregation, and storage of materials used in the automotive industry to meet relevant international and national regulations.
Purpose
To ensure that manufactured vehicles comply with international environmental regulations (such as the EU's ELV and REACH), the material composition of vehicle components must be accurately recorded in the Material Declarations (MDS) system. This allows automakers and environmental authorities in various countries to monitor whether the content of substances in the vehicles meets regulations.
The IMDS (Industrial Material Declarations) regulations require that the content of chemical substances in each component be recorded within a specific range to protect suppliers' patented formulations and maintain transparency regarding the materials used in the entire vehicle.
IMDS Material Scope Requirements
1. Proportion Limits: The declared substance content range must comply with the general rules and guidelines of the IMDS system. Excessively large range values cannot be used to circumvent the declaration of prohibited substances.
2. Tolerances: For basic substances, the system sets permissible tolerance ranges based on the substance's content. Warnings or errors will be triggered when values exceed system settings or violate guidelines (e.g., the maximum value of the range is used for worst-case calculations; if wild-type substances are included, the cumulative proportion cannot exceed the limit).
3. Classification Coverage: The system has specific component definitions and declaration rules for different material classifications (e.g., metals, plastics, adhesives, etc., corresponding to classification codes 5.x to 9.x).
4. Regulatory Limits: For prohibited/restricted substances such as GADSL (Global Automotive Substances List) and SVHC (Substances of Very High Concern), the content is typically declared with a threshold of 0.1%. If the limit is met or exceeded, the type of chemical presence must be clearly declared (e.g., intended addition, residue, or impurity).
Investigation Focus and Login Items
1. Basic Substances and Chemical Composition: A detailed list of all chemical substances constituting the material, including CAS numbers, substance names, and precise weight ratios.
2. GADSL and REACH Controlled Substances: Automatically corresponds to the Global Automotive Substances List (GADSL), Substances of Very High Concern (SVHC) under REACH regulations, and prohibited substances (such as lead, mercury, cadmium, hexavalent chromium, etc.).
3. Part/Node Basic Information: Part name, part number, drawing version, supplier code, and company information.
4. Material Classification: Must be classified according to the IMDS standard classification (e.g., 1.x Steel, 2.x Non-ferrous Metals, 5.x Plastics, 6.x Elastomers, 9.x Special Substances, etc.).
5. Homogeneous Material Declaration: Demonstrates the compositional consistency of each homogeneous material (the smallest indivisible unit).
6. Circular Economy and Environmental Data (Specific Requirements):
Recycled Material Ratio: Indicates whether the material contains recycled materials (such as PCR plastics, recycled metals).
Bio-based Materials: Declares the proportion of materials with bio-based origins.
Inorganic/Fossil Material Content: Reports the percentage of ores or fossil fuels according to specific classifications.
The above is information about IMDS. For more detailed information, please visit the official website: