ISRI Codes of Steel Scrap

Obsolete scrap comprise of HMS 1 and HMS 2.
Heavy melting steel (HMS) or heavy melting scrap is a designation for recyclable steel and wrought iron. It is broken up into two major categories: HMS 1 and HMS 2, where HMS 1 does not contain galvanized and blackened steel, whereas HMS 2 does.
The Institute of Scrap Recycling Industries breaks up the categories further:

Heavy Melting Steel No. 1:

ISRI Code 200

ISRI Code 201

ISRI Code 202

Heavy Melting Steel No. 2

ISRI Code 203

ISRI Code 204 / 205 / 206

Shredded Steel Scrap

ISRI Code 211

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