Precision Drill Rod Data Sheet


O1 Oil Hardening

Typical Analysis

Carbon 0.90 Vanadium 0.20
Manganese 1.20 Chromium 0.50
Silicon 0.30  


The most widely used grade of drill rod. It is a general purpose tool steel, outstanding for its

reliability in hardening, good wear resistance, and excellent toughness.


W1 Water Hardening

Typical Analysis

Carbon 0.95 to 1.10  


Water hardening grade is intended to meet the needs of the machine shop for average work
wherever better grades of tool steel drill rod are not required.


A2 Air Hardening

Typical Analysis

Carbon 1.00 Vanadium 0.25
Molybdenum 1.10 Chromium 5.25
Manganese 0.60  


A2 is recommended rather than O1 when increased wear resistance, safer hardening, and less

distortion are required.


S7 Air Hardening Super Shock

Typical Analysis

Carbon 0.50 Molybdenum 1.40
Silicon 0.25 Chromium 3.25
Manganese 0.70  


A new outstanding air-hardening drill rod – the toughest, strongest drill rod for so many jobs that

require maximum strength and impact.


D2 High Carbon – High Chrome

Typical Analysis

Carbon 1.50 Molybdenum 0.75
Chromium 12.00 Vanadium 0.25 to 0.80


An air-hardening type steel, known for its rnaximum wear resistance qualities. It is ideal for use in

tools, dies, etc., used in long production runs.


M2 Moly-Tungsten-High Speed

Typical Analysis

Carbon 0.83 Chromium 4.15
Molybdenum 5.00 Vanadium 1.90
Manganese 6.35  


The most widely used type of high-speed steel and, in general, can be used for the same
applications as T-1 high speed. It’s higher carbon content and balance analysis produce
properties applicable to all general-purpose high -speed uses.





Fine Standard Tolerances


  Standard   Standard
  Tolerance* Straightness Tolerance*
  (section) Max T.I.R. (length)
Round Drill Rod      
3.000″ to 0.500″ +/- .0010″ .005″ +1/8″, -.0
0.499″ thru 0.125″ dia. +/- .0005″ .005″ +1/8″, -.0
0.124″ and smaller +/- .0003″ .005″ +1/8″, -.0
*Closer tolerances than standard can be produced upon special request.




Data shown are typical, and should not be construed as maximum or minimum values for specification or for final design.

Data on any particular piece of material may vary from those herein.