Answer :

Final answer:

For grinding ferrous metals on a grinder, aluminum oxide is the recommended abrasive type due to its heat resistance and durability.

Explanation:

When grinding ferrous metals on a pedestal and bench grinder, the most suitable wheel abrasive type is aluminum oxide. This abrasive is preferred because it is durable and designed to handle the high levels of heat generated when grinding ferrous metals. Additionally, it is important to select the appropriate grade of aluminum oxide wheel depending on the hardness of the material being worked on. For high tensile strength materials like steel, a harder grade such as medium to fine is typically advised.

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Rewritten by : Barada