4140 Annealed Tool Steel Technical Data
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Uses:
Brake die, support tooling, die holders, short run stamping and bending dies.
Forging/Rolling:
Heat slowly and uniformly to a temperature of from 1800° F to 2000° F. Do not forge or roll below 1600° F.
Annealing:
Heat slowly to 1500° F, and hold for 1/2 hour per inch of thickness. Furnace cool at 20° F per hour to 1230° F; air cool to room temperature. Expected Brinell hardness 197 max.
Hardening:
Heat to 1500° F – 1600° F and hold 1/2 hour per inch of greatest thickness. Quench into 150° F oil.
Tempering:
Temper immediately after quenching, before part has cooled to below 150° F. Parts should be held a minimum of 1 hour per inch of thickness. A single temper is sufficient. 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.