D7 Tool Steel Technical Data
(Rounds Only)
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Uses:
Brick mold liners, sand slinger liners, dies, machine ways, track packer pads, tile die.
Forging/Rolling:
Preheat to 1500° F and soak thoroughly. Then raise to 2050° F – 2125° F. Do not forge or roll below 1800° F, cool slowly from the forging or rolling temperature. Do not normalize.
Annealing:
Heat slowly to 1600° F – 1650° F, and hold for uniformity, furnace cool at a rate of 20° F per hour to 1000° F then air cool. Expect Brinell hardness 235 – 262.
Hardening:
Preheat to 1500° F and soak until uniformly heated and either transfer or raise furnace temperature to 1850° F – 1950° F, and hold 1 hour per inch of greatest thickness. Cool in still air.
Tempering:
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 maximum wear resistance temper at 300° 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.
Diamond Metals' trucks can deliver to customers in our part of Ohio.
Each block or round ships with a detailed label that incudes PO, Job and Detail Numbers.
With its testing equipment Diamond Metals can deliver Metallurgical Reports where required.