Product Details
One of the most common forms of wrought iron and steel scrap, heavy melting steel (HMS) is recyclable steel derived from a variety of sources—for example, railroad wheels, ship plates, construction scrap, auto and truck bodies, and so on—and cut into individual pieces not greater than 60 x 24 inches, sized optimally for charging to a furnace. By Institute of Recycling Industries (ISRI) standards, HMS must contain less than 1 percent of non-metal impurities.
HMS scrap comes in two designations, HMS 1 and HMS 2. Specifically, HMS 1 contains no blackened or galvanized steel, while HMS 2 does. While both are quite dense, HMS 1 has a minimum thickness requirement of 1/4 inch, while HMS 2 has a minimum thickness requirement of 1/8 inch. The ISRI provides further categorizations of HMS steel as described below.
HMS 1
HMS 1 consists of heavy melting steel scrap containing no galvanized or blackened steel, and having a minimum thickness of 1/4 inch. Further categories include:
ISRI-200: Pieces no larger than 60 x 24 inches optimized for charging
ISRI-201: Pieces no larger than 36 x 18 inches optimized for charging
ISRI-202: Pieces no larger than 60 x 18 inches optimized for charging
HMS 2
HMS 2 consists of heavy melting steel scrap containing galvanized or blackened steel, having a minimum thickness of 1/8 inch. Further categories include:
ISRI-203: Pieces no larger than 60 x 24 inches optimized for charging
ISRI-204: Pieces no larger than 36 x 18 inches optimized for charging. May include automobile scrap
ISRI-205: Pieces no larger than 36 x 18 inches optimized for charging. May include automobile scrap, but must be free of sheet iron or thin gauge material
ISRI-206: Pieces no larger than 60 x 18 inches optimized for charging. May include automobile scrap, but must be free of sheet iron or thin gauge material
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