What Does Rimmed Steel Mean? Rimmed steel is a low-carbon steel. This steel contains an amount of iron oxide such that continuous generation of carbon monoxide during solidification is not inhibited. Rimmed steel is virtually free from voids, and is easily bendable and cleanable.

What is the purpose of producing rimmed steel?

Typically, rimmed steels are best suited for the production of steel sheets and plates, as the structural pattern persists through the rolling processes. After solidification of the outer rim, fine gas bubbles form in the body of the ingot and help to counteract the solidification shrinkage.

What is rimmed or capped steels?

Capped steel starts as rimmed steel but part way through the solidification the ingot is capped. ... The yield of rimmed and capped steel is slightly better than that of semi-killed steel. These types of steels are commonly used for sheet and strip metal because of their excellent surface condition.