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HMS 1 and 2 Metal / Steel (Iron) Scrap for sale.
 
Heavy melting steel (HMS) or heavy melting scrap 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. HMS is typically traded as a blend of 1 and 2, either a premium blend (80/20) or lower grade mixes (70/30) and (60/40). For example, HMS 1 and 2 (80/20) should consist of HMS 1 and 2 in the ratio of 80% (HMS 1) and 20% (HMS 2).
 
Each grade guarantees a minimum piece thickness: at least 1/4 inch (6.3 mm) for HMS 1, and 1/8 in for HMS 2
 
HMS 1 and 2 specifications as defined by ISRI 
 
ISRI SPEC 200 (HMS 1) Wrought iron and/or steel scrap 1/4 inch and larger in thickness. All pieces must be smaller than 60×24 in.
ISRI SPEC 201 (HMS 1) Same as ISRI 200 except pieces must be smaller than 36×18 in.
ISRI SPEC 202 (HMS 1) Same as ISRI 200 except pieces must be smaller than 60×18 in.
ISRI SPEC 203 (HMS 2) Wrought iron and/or steel scrap, black and galvanized, 1/8 inch and larger in thickness.
ISRI SPEC 204 (HMS 2) Same as ISRI 203 except pieces must be smaller than 36×18 in.
ISRI SPEC 205 (HMS 2) Same as ISRI 204 except it may contain automotive scrap, except for thin guage material.
ISRI SPEC 206 (HMS 2) Same as ISRI 205 except pieces must be smaller than 60×18 in.
 
Composition
C - 0.54-0.82%,
SI - 0.18-0.40%,
MN - 0.60-1.05%,
S - 0.04% maximum
P - 0.035% maximum
AS: - 0.01% Maximum of Mass Shar