Heavy melting steel

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. The difference between the two is HMS 1 does not contain galvanized and blackened steel, whereas HMS 2 does. The Institute of Scrap Recycling Industries breaks up the categories further:

*ISRI 200 (HMS 1): Wrought iron and/or steel scrap 1/4 inch and larger in thickness. All pieces must be smaller than 60x24 in.
*ISRI 201 (HMS 1): Same as ISRI 200 except pieces must be smaller than 36x18 in.
*ISRI 202 (HMS 1): Same as ISRI 200 except pieces must be smaller than 60x18 in.
*ISRI 203 (HMS 2): Wrought iron and/or steel scrap, black and galvanized, 1/8 inch and larger in thickness.
*ISRI 204 (HMS 2): Same as ISRI 203 except pieces must be smaller than 36x18 in.
*ISRI 205 (HMS 2): Same as ISRI 204 except it may contain automotive scrap except for thin gauge material.
*ISRI 206 (HMS 2): Same as ISRI 205 except pieces must be smaller than 60x18 in.

ee also

*Steel

References

*Citation| title = Scrap Specifications Circular 2007| publisher = Institute of Scrap Recycling Industries, Inc.| year = 2007| url = http://www.isri.org/AM/Template.cfm?Section=Commodity_Specifications&CONTENTID=14799&TEMPLATE=/CM/ContentDisplay.cfm.