W-1 Drill Rod Tool Steel is a popular, versatile and inexpensive grade of drill rod tool steel. It has a high carbon content so it is usually used without heat treat. Its tool life isn't equal to O-1 tool steel.
Standard bar lengths are 3 foot long but can be supplied in 12 foot long as well.
This material is stocked in the annealed condition and ground and polished in tight tolerances.
Specifications:
UNS 20102105, SAE J437, ASTM A686