Dual hardness steel article
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United States of America Patent
Stats
-
Dec 8, 2020
Grant Date -
Jan 24, 2019
app pub date -
Sep 26, 2018
filing date -
Jan 7, 2011
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A dual hardness steel article comprises a first air hardenable steel alloy having a first hardness metallurgically bonded to a second air hardenable steel alloy having a second hardness. A method of manufacturing a dual hard steel article comprises providing a first air hardenable steel alloy part comprising a first mating surface and having a first part hardness, and providing a second air hardenable steel alloy part comprising a second mating surface and having a second part hardness. The first air hardenable steel alloy part is metallurgically secured to the second air hardenable steel alloy part to form a metallurgically secured assembly, and the metallurgically secured assembly is hot rolled to provide a metallurgical bond between the first mating surface and the second mating surface.
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