D2 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

D2 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

D2 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 upfront 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 D2 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