H13 Tool Steel
|Tempering Temp. º(F):||Hardness Rc|
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.