The standard states that "IATF 16949 defines the quality management system requirements for a client providing design and development, production and, when relevant, assembly, installation, and services of automotive-related products". Unfortunately, this doesn't include production of raw materials.
In addition, the document called Rules for achieving and maintaining IATF recognition published by AIAG, states "Only manufacturing sites where production, service parts, and/or accessory parts that shall be mechanically attached or electrically connected to the vehicle are manufactured and supplied to automotive customers are eligible for IATF 16949 certification".
If the raw material produced is a material component to be used in the automotive industry and to be assembled on a road vehicle, in this case, the raw material producer can apply for the IATF 16949.2016 certificate.
As an example, we can give the car paint raw material manufacturer or the steel manufacturer. In both cases, the raw material is used both in the vehicle bodywork to produce the car.
Raw material suppliers producing these materials can obtain IATF 16949 certification.