D2 Tool Steel Technical Data

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Chemical Analysis
Chemical Analysis
Carbon
1.45/1.50
Manganese
.60 Max.
Phosphorus
.030 Max.
Sulfur
.030 Max.
Silicon
.60 Max.
Chromium
11.00/13.00
Vanadium
1.10 Max.
Tungsten
-------
Molybdenum
.70/1.20
Cobalt
1.00 Max.
Tempering Temp. (ºF):
Hardness Rc
As-Quenched
64
400
60
500
58
600
58
700
58
800
57
900
58.0/60.0
1000
56
1100
48
1200
40

Uses:

Slitter knives, planer knives, shear blades, plastic granulator knives, punches, dies, form rolls, rolls, thread roll dies.

 

Forging/Rolling:

Preheat to 1250° F and soak thoroughly.  Then raise to 1950° F – 2050° F.  Do not forge or roll below 1700° F, cool slowly from the forging or rolling temperature.  Do not normalize.

 

Annealing:

Heat slowly to 1600° F – 1650° F, and hold for uniformity.  Cool at a rate of 20° F per hour to 900° F.   Furnace cool slowly.  Expected Brinell hardness 229 max.

 

Hardening:

Preheat to 1200° F – 1250° F, soak until uniformly heated, and either transfer or raise furnace temperature to 1850° F, and hold 1 hour per inch of greatest thickness.  Quench into 150° F oil.

 

Tempering:

Temper immediately after quenching, before part has cooled to below 150° F.  D-2 parts should always be double tempered and the parts should be held a minimum of 2 hours per inch of greatest thickness.  For most applications the tempering range for the D-2 analysis is 900° F – 960° F.  The above tempering table may be used as a guide.  However, since 1/2″ dia. specimens were used for this test, it may be found that heavier sections are several points lower.

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