There are three different ways the make sure what you have in your hand is carbide,

• Is it heavy? It does not take a lot of carbide for the weight to add up. Carbide is much heavier then steel is.
• Is it magnetic? True tungsten carbide has very little attraction to a magnet. You should be able to easily pull the magnet away from the carbide.
• How much does the material spark? If you place a piece of carbide on a grind wheel the spark will be close together and the spark will be more orange in color.

While a piece of steel will spark like a sparkler and the sparks will be whiter.

These are three great ways to ensure that what you are sending us is carbide.