H13 Tool Steel

Chemical Analysis:
Carbon .32/.45
Manganese .20/.50
Phosphorus .030 Max.
Sulfur .030 Max.
Silicon .80/1.20
Chromium 4.75/5.50
Vanadium .80/1.20
Tungsten -------
Molybdenum 1.10/1.75
Cobalt -------
Tempering Temp. º(F): Hardness Rc
As-quenched 54.0
400 54.0
500 53.0
600 53.0
700 53.0
800 53.0
900 54.0
1000 53.0
1100 46.0
1200 36.0


Extrusion dies, forge dies, slitter knives, hot shears, trimmer dies, gripper dies, die casting dies, heading dies, pneumatic tools.


Preheat slowly to 1300° F - 1500° F and soak thoroughly.  Then raise to 2050° F - 2150° F.  Do not forge or roll below 1650° F, cool slowly from the forging or rolling temperature.  Do not normalize.


Heat slowly to 1600° F, and hold for uniformity, cool at a rate of 30° F per hour to 900° F, then air cool.  Expected Brinell hardness 207 max.


Preheat to 1300° F - 1400° 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 in still air and temper without delay.


Temper immediately after quenching, before part has cooled to below 150° F.  Parts should be held a minimum of 2 hours per inch of greatest thickness.  Double tempering is recommended for the H-13 grade.   For most applications, H-13 should be tempered in the 1100° F - 1150° F range.  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.