Eastern Tool
Steel Service, Inc.

1045 Delaum Rd.

P.O. Box 857

St. Marys, Pa 15857

Phone: (814) 834-7224
Fax: (814) 834-7225
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D-2 Tool Steel Data Sheet

D-2 is a high carbon, high chromium heat treatable tool steel intended for applications requiring high wear resistance.

Chemical Composition

Carbon 1.55%
Manganese 0.35%
Chromium 11.5%
Molybdenum 0.90%
Vanadium 0.80%

Typical Applications

Blanking DiesThread Roll Dies
Forming DiesTrim Dies
PunchesShear Blades
GuagesWear Inserts
Powder Compaction Punches

Cold Work Tool Steel Comparison Chart

Thermal Treatments

Preheat : 1100/1250F (595/675C), equalize, 1350/1450F (775/790C), equalize.

Austenize : 1825/1875F (995/895C), 30/45 minutes at temperature.

Quench : Air, positive pressure vacuum. Cool to 150F (65C).

Temper : 400/1000F (205/540C), hold 2 hours at temperature, air cool. Temper twice.

Cryogenic Treating : Refrigeration treatments may improve long term dimensional stability by transforming retained austenite. Refrigeration treatments should generally be performed after the first temper, and must be followed by a temper.

Hardness and Impact Toughness Data
Air cooled from 1850F(970C)

Tempering Toughness
Temperature HardnessCharpy C-Notch
Deg. FDeg. CHRCFt. Lbs.Joules
As quenched 63 -
300 150 6217 23
400 205 61 21 29
500 260 60 23 31
600 315 59 22 30
700 379 58 22 30
800 425 58 21 29
900 480 58 21 29
1000 540 55 19 26

Surface Treatments

D-2 can be given standard surface treatments such as nitriding, titanium nitride coating, or hard chrome plating if desired.Prior to nitriding or PVD treatment, double temper at or above the process temperature.


A. Heat to 1600F (870C), hold 2 hours, slow cool 50F (30C)/hour maximum) to 1200F (650C), air cool.
B. Heat to 1600F (870C), hold 2 hours, cool to 1400F (760C), hold 6 hours, air cool.
Typical annealed hardness: 221/225 BHN.

Stress Relieving

Annealed Material: Heat to 1200/1250F(650/675C), hold two hours, cool in still air.
Hardened Material: Heat to 25F(15C) below original tempering temperature, hold two hours, cool in still air.


Use air hardening tool steel filler material.

Annealed Material:Preheat 700/900F(370/485C), maintain over 700F(370C) during welding. Reanneal or temper 1425F(775C) 6 hours after welding.

Hardened Material: Preheat to 25F(15C) below original tempering temperature (350F(150C) minimum). Maintain above 350F(150C) during welding. Cool to 150F(65C) after welding. Temper 25F(15C) below original tempering temperature. Minimum 350F(170C)

Physical Properties

Modulus of Elasticity
30psix10(6)(207 GPa)
Density0.278 lb/in3(7695 kg/M3)
Thermal Conductivity15 BTU/hr./ft./F26 W/m/ K)

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