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Technical Data » Grade » W1

W1 Tool Steel

W1 is a water hardening cold work tool steel that is supplied as drill rod in sizes from .062" to 2" round.

APPLICATIONS: Shafts, pins, blacksmithing tools, and a variety of short-term wear tooling. W1 Drill Rod is typically supplied in 36" lengths and can be special ordered as twelve foot bars.

Composition
C Mn Si Cr Mo W V
.95/1.05 .3/.4 .1/.25 .15 1 .15 .1

Heat Treating Instructions

Annealing: Heat to 1375 to 1400° F, soak until uniformly heated, approximately, one-half hour per inch. Furnace cool 50° F per hour to 975° F, air cool to room temperature. Approximate annealed hardness 200 Max. Brinell.

Preheating: Heat to 1200° F, hold at this temperature until thoroughly soaked.

Stress Relief of Unhardened Material: Heat slowly to 1200 to 1250° F. Soak for two hours per inch of thickness at heat. Soak, slow cool (furnace cool if possible) to room temperature.

Hardening

Preheating: Heat to 1200° F, hold at this temperature until thoroughly soaked.

Hardening: Heat to 1425 to 1475° F. Soak at heat for 30 minutes per inch of thickness. Temperatures on the high side of the range will increase the depth of the case.

Quenching: This material may be water quenched, but brine quenching is preferred. Water or brine quench to 150 to 200° F. Oil quenching is sometimes used for light sections and where maximum hardness is not required.

Tempering: Normally water hardening steels need be single tempered only. However, double tempering may sometimes be preferred. Soak at heat for two hours per inch of thickness for each temper. Air cool to room temperature between tempers.

Tempering Chart, W1 Tool Steel, Hudson Tool Steel
Machinability

W1, in the annealed state, machines at 100% of a 1095 carbon steel.


All tool steel is sold as annealed with the exception of P20 and 4140HT, which are heat treated to HRC 28/32
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California800-996-0411

17871 Park Plaza Dr., Suite #135
Cerritos, CA 90703

New Hampshire866-557-2874

14 Industrial Park Dr
Dover, NH 03820

North Carolina800-991-0306

434 Springbrook Road
Charlotte, NC 28217

Illinois800-338-4566

7987 Crest Hills Drive
Loves Park, IL 61111

Sales Offices: Tennessee 888-848-0037 Michigan 833-235-1678