What are auger bits made of?
|During the 19th Century, auger bits were made of hot rolled cast steel.|
|However, they are now most commonly made from high carbon tool steel, which is harder and more resilient.|
|This is slightly softer than the high speed steel used to make other drill bits, but it is not necessary for a bit to be quite so hard when it is primarily designed for cutting wood. Auger bits are also used at a slow speed in comparison to twist bits, meaning there is less need for heat resistance|
|Auger bits made from high speed steel are available, but they are less common.
For more information on high speed steel, see: What are drill bits made of?
|Titanium carbide is used for the tips of some auger bits as it is hard enough to cut through nails.
For more information on titanium carbide, see: What are drill bits made of?
|Auger bits are not usually supplied with any form of coating, as the tool steel they are made from is hard wearing enough for them to last a long time.|