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
| DIMENSIONAL 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.