Alro Steel was established in 1948 by Al and Robert Glick and has grown to include Alro Plastics, Alro Industrial Supply and Alro Metals Outlet.

D-2 Drill Rod Tool Steel

D-2 Drill Rod Tool Steel
Chemical Composition
Carbon (C)             1.40/1.60
Manganese (Mn)     .60 max
Silicon (Si)              .60 max
Tungsten (W)          N/A
Molybdenum (Mo)  .70/1.20
Chromium (Cr)       11.00/13.00
Vanadium (V)       1.10 max
Cobalt (Co)           1.00 max
*Nickel (Ni)            .30 max
* Unless otherwise specified, nickel plus copper equal 0.75% max. for all tool steel types

D-2 Air-Hardening Tool Steel

What is D2 Drill Rod?

D2 Drill Rod is D2 Tool Steel round stock that has been ground to a very tight tolerance. Buying this ground rod lets you get straight to making your part(s) because no up front preparation is required. In addition to grade D-2, drill rod is available in other grades (see below). D2 is air-hardened and has a higher alloy content which makes it the toughest of the drill rod grades.

More About D-2 Tool Steel

D-2 is a very deep hardening steel and will be practically free from size change after proper treatment. The high percentage of chromium gives it mild corrosion-resisting properties in the hardened condition. It has low machinability and grindability, with a medium resistance to decarburization. For more information visit our Tool Steel Page.

If you need something other than a round drill rod, consider Alro's Super Square. Alro can precision mill D2 Tool Steel into a Super Square - these can be 2, 4, or 6 side precision milled pieces. Alro will precision mill to customer tolerances and do it fast. For other shapes, Alro Steel is also able to grind tool steel with a rotary grinding machine for a fast turnaround, with reciprocal grinding for an even smoother finish. Alro Steel is a large tool steel supplier offering a wide variety of tool steels suitable for various applications.

For more information or to receive a quote contact Alro Steel.

Other D2 Tool Steel Shapes

  • Flat
  • Plate
  • Round
  • Square

Other Drill Rod Grades

  • A2
  • O1
  • W1
  • S7
  • M2
  • V44


D-2 is typically bought to meet chemistry requirements rather than physical requirements. For that reason, physical properties are generally not provided unless requested prior to production. Any material can be sent to a third party after production to be tested for physical properties.

Typical Uses

D2 tool steel can be used to create a variety of parts. Typical applications include:

  • Blanking Dies
  • Forming Dies
  • Coining Dies
  • Slitting Cutters
  • Heading Tools
  • Long Punches
  • Forming Rolls
  • Edging Rolls
  • Master Tools
  • Drawing Dies
  • Shear Blades
  • Gauges
GradeBuy ROUND
D-2 Drill Rod