FAQ - Frequently Asked Questions
Here you can find questions and answers regarding IMDS content and usage in several categories. To see the content of each category and to read the answer to a question, please click on the category/question to expand the content.
You find OEM-specific IMDS documentation for suppliers in the Help category "OEM Specific Information" (no longer under FAQ).
Is there additional information regarding the requirement of a Standard Material Number according to Recommendation IMDS001?
Application codes are related to some legal requirements on certain substances or substance groups. The application codes relate to how the material is used in a component (part). Although it might appear that application codes are related to a material, in actuality it is only possible to select an application code when the material is first attached (referenced) by a component. There may other material nodes or semi-component nodes in the path between the material and the component. It is the usage on the component that determines the appropriate application code.
There is a large number of application codes that can be used, but only a few are valid for each circumstance. In order to assist the user, IMDS only presents application codes relevant to the situation. The "possible" application codes depend on: the material classification, the basic substance, and the % of basic substance in the material. If you do not find an expected application code, then either the material classification is incorrect or the % of the basic substance in the material is too high.
The attached file (downloadable Excel file, updated July 2021) indicates which application codes are permissable in each situation. For ease of use, the tabs in the file relates to a specific substance category: Lead, Hexavalent Chromium, Mercury, Cadmium, Nickel and Polycyclic Aromatic Hydrocarbons. The first column of "Applications" worksheet shows all applications with their text applicable to the substance. The following columns show all material classifications. The resulting table shows the valid applications for a substance within a material of the specified classification. Only where an entry appears in the column is the combination of application and material classification valid. If there is an additional percentage value (e.g. x ≤ 4%), the application is valid only when the percentage of the substance in the material does not exceed the stated percentage value.
With IMDS Release 12.2, the user is responsible to actively select the correct application code.
Here you can find an IMDS Steering Committee document on the application changes for your support (Version: June 2016).
Jokers/wildcards can be used to replace “highly confidential substances” in the material formula. However, the user MUST NOT use a joker/wildcard as a substitute for a declarable or prohibited substance on the GADSL or Renault lists or for a substance that requires an application code. Use of the phrase “not to declare” reminds the user of this.
Due to the requirement that every time the GADSL is updated, the user is required to review all of his materials that contain a joker/wildcard, it is suggested that the use of jokers/wildcards be reduced/eliminated the next time the material is updated and instead use the actual substance and mark it “confidential”.
Materials have to be reported in their final state. For example, if using a polymer such as ABS, you do not report the chemicals that are used for polymerizing ABS. You use an ABS pseudo-substance from the system. Similarly, in paints and adhesives, only the “cured” product is to be reported. However, you do need to report all additives like e.g. pigments, flame retardants, and fillers. You can go to Substance Search and select a substance group to see substances in that group. By using pseudo-substances, where applicable, much of the concern about proprietary formulations is laid to rest.
For the confidential substances: Technically, you can use a joker/wildcard as a substitute for highly confidential substances. However, you cannot use a joker/wildcard for any substances that is declarable or prohibited according to GADSL, application relevant, on a Renault list or an SVHC on the REACH candidate list. But every time one of these lists changes you have to check your entries with a joker/wildcard and certify that the joker/wildcard does not replace a substance which now can be found on the above mentioned lists. That’s a lot of work.
OEMs would prefer if you use the IMDS functionality of marking substances as confidential instead of using jokers/wildcards. Most substances – those not declarable or prohibited according to GADSL, application-relevant, on a Renault list or an SVHC on the REACH candidate list – will have a checkbox next to confidential when added to the tree structure. Should you check the box, only specific users who have been granted “Trust user” status by a Company Administrator in your company can see the actual substance in the tree structure. All other users will only see the expression “confidential substance”. This includes both users in your own IMDS company and OEMs – users in your OEM or in their offline system will not be able to see what the substance is. All they will know is that since it is marked confidential, it cannot be on the GADSL, require an application code, be a joker, or SVHCs on the REACH candidate list.
Should the status of the substance change, for example it will be added to one of the lists , the Company Administrator of the material creating company and users of the company who request notification on settings will receive an e-mail indicating that resubmission is required as the substance can no longer be marked confidential.
You can mark up to 10% of the substances in a material as “confidential” without generating an IMDS warning.
Please find the answer in this document.
With Release 3.0 (active since May 24th, 2005) IMDS implemented the Recyclate tab directly to the material chapter if one of the following classifications is built to a component level: 1.1 up to 5.5.2 and 6.2.
For classifications 7.1 and 7.2 this was implemented in May 4th, 2011.
The default Recyclate answer is ‘No’ – this became activated automatically if one of the given classifications has been added to a component node – for components which were created prior to these dates the recyclate question does not need to be answered if IMDS does not generate an error message.
Is there additional information regarding the requirement of a
Standard Material Number according to Recommendation IMDS001?
The standard material number field is only available for material classifications 1x - 4x. This number is from a numbering schema that uniquely identifies the chemical composition of the metal. Different parts of the world use different standards. One of the more popular numbering schemas is the UNS (Unified Numbering System), although the Japanese standard is JIS. Another schema is the VDeH which only encompasses Steels and Irons.
It should be noted that not all materials in classification 1x - 4x are manufactured to a norm or have a standard material number. A missing value in this field is not an automatic reason for rejection (which is why lack of a value does not result in a warning or error in IMDS).
Prior to Release 4.1 it was impossible to add a standard material number e.g. for copper alloys. Therefore, data without standard material number are still valid, if they were created before IMDS Release 4.1. Please check the release date on materials of this classification.
If tolerances were not allowed, the Calculated weight would always equal the Analysis weight. However, since tolerances are allowed, there are sometimes differences.
In the check function to release an MDS, the system compares the “Measured Weight” of the parent with the “Sum of the Measured Weight” of the children (Calculated Weight).
However, Analysis checks the measured weights of the entire tree structure.
For further information, please read How can I find where I've used a particular substance or how can I analyze MDSs or how can the Analysis function be best used?
If the sum of all single means from sub-nodes in a product structure tree is not 100% a correction of these means is necessary. For doing so, the ranges are used as weighting coefficient. Large ranges are corrected more, smaller ranges less.
Calculating the means is carried out according to the formula
(min + max) / 2 (= arithmetic mean)
However, there are exeptions to this rule, e.g. if the sum of all arithmetic means plus fix values is larger or smaller than 100%.
To give you an example with one MDS containing two materials with ranges:
A 30 - 51% (arithmetic mean 40.5%)
B 49 - 60% (arithmetic mean 54.5%)
There are no further nodes on this level and no rest. The sum of the arithmetic means is 95%.
Therefore, a correction of these means is necessary in order to reach 100%. For doing so, the ranges (21 for the first node and 11 for the second node) are used as weighting coefficient.
21% + 11% = 32%
Corrective value for material A: 5% / 32% x 21% = 3,28125%
Corrective value for material B: 5% / 32% x 11% = 1,71875%
The following weighted means are the result:
A 40,5% + 3,28125% = 43,78125%
B 54,5% + 1,71875% = 56,21875%
It is also possible that the sum of all substances in one case is 99.99999% and in another 100.000001%. These differences to 100% are a result of rounding-off differences if there are many nodes and many corrective values to be calculated.
To determine the range permitted and not receive the Recommendation 001 warning
- Note your material classification.
- Use the Material classification to find the right table - most will use the 3rd table.
- Note your lower limit.
- Select the correct row in the table paying particular attention to the breakpoints. If it is on the border, the higher row in the table is used.
- Find the associated M value.
- Add M to the lower limit to get the maximum allowable upper value that will not generate a warning.
Please find the answer in this document.
FAQ(よくあるご質問集) - その他
ELV and Annex
Where can I find the European ELV Directive and the latest version of Annex II?
Here you can additionally find an IMDS Steering Committee document on the application changes for your support (Version: June 2016).