About the material model
- Last UpdatedMar 25, 2025
- 2 minute read
Important: AVEVA™ Production Management introduces the ability to define materials, but retains the ability to define products. Future development of AVEVA™ Production Management will phase out products and use only materials. Meanwhile, you may be required to maintain materials and products, depending on the modules that your project uses.
The material model defines the actual materials, material definitions, and information about classes of material definitions. Material information includes the inventory of raw, finished, and intermediate materials.
In Studio, a material is a configurable item that you create. You use material items to define each material that the plant uses and produces so that other AVEVA™ Production Management facilities can identify the role of the material in the manufacturing process.

Materials
Materials are the substances that the plant uses and produces. These include raw materials, work-in-process, and finished goods. Also, for purposes of planning, scheduling, and processing: materials are goods with similar characteristics.
Example: Raw, intermediate, and finished materials
The plant might process the raw material of sugar cane into the intermediate material (work-in-process) of syrup, which it then processes into the final material (finished goods) of candy.
Material classes
In addition to the material hierarchy, the ANSI/ISA–95 standard states that the material model also has a concept called material class and each class can have one or more custom properties. A specific material can belong to a material class. Through this association, each material has the same set of custom properties. For more information, see Add and configure material classes.

Example: Create a material class with custom properties
You can configure a material class of Coal with two custom properties: Carbon and Sulphur.

You can configure five specific materials (for example, Raw Coal, Processed Coal, and so on), and associate them with the Coal class. Each of the materials belonging to the material class Coal will inherit the two custom properties: Carbon and Sulphur.