The post describes how to know the material info easily if needed.
Many times we create material master by referring to another already created material. We need to know what is the industry sector and material type in Tx- MM01.
Go to Tx- MM03 and provide the already created material that you want to refer to create a new material.
Choose Basic Data 1.
Select the marked [ i ] icon.
It displays the industry sector and the material type of the material. You can easily know this without going back to the DB tables and checking the details.