- Jan 15, 2019-
What is Abrasion-Resistant Steel Plate?
Abrasion-resistant (AR) steel plate is a high-carbon alloy steel plate, which signifies that AR is formable and weather-resistant due to the added alloys, and harder due to the addition of carbon.
Carbon is added during the formation of steel plate which considerably increases hardness and toughness, but reduces strength. Hence, the AR plate is employed in conditions where wear and tear and abrasions are the main causes of failure. The AR plate is not perfect for structural construction applications, like support beams in buildings or bridges.
Common applications of the AR plate include dump liners, grates, buckets, construction attachments, conveyors, body armor, and ballistic plates (and as targets at shooting ranges).
What is Through-Hardening?
AR steel is usually explained as being through-hardened, but what does that actually mean?
The composition of the whole plate changes when the grain structure changes during the primary heating stage of Q&T. This is known as through-hardening. Through-hardening is different from “case-hardening,” also known as “surface-hardening,” which only hardens the surface while enabling the metal deeper beneath to stay soft. In this case, the hardening or composition of the plate only varies at the surface level.
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