Class Scrap Specifications And Compositions
UBC Used Beverage Cans
CLASS I 3004, clean, body stock: skeletons & trim, slitter balls & trim, undecorated cans & cups
CLASS II 5000 series alloy: skeletons & trim, slitter balls & trim, spoiled uncompounded ends, spoiled cans & cups, tab stock skeletons & particles, mislithographed sheets
CLASS III Spoiled decorated cans: 3004 type
CLASS IV Spoiled compounded ends: 5000 series

Composition Limits as Follows:
Component Class I & II UBC Class II
Si 0.2100 0.2100 0.1700 max
Fe 0.4500 0.4200 0.2800 monthly avg
Fe 0.5200 0.4700 0.3500 max
Fe 0.5200 max ingot
Cu 0.2500 0.2500 0.1000 max
Mn 1.2000 1.1000 0.4000 max
Mg 1.5000 1.5000 2.0-5.1 max
Cr 0.0300 0.0300 0.0500 max
Ni 0.0200 0.0200 0.0200 max
Zn 0.1000 0.1000 0.1000 max
Ti 0.0200 0.0200 0.0500 max
Pb 0.0100 0.0100 0.0100 max
Bi 0.0100 0.0100 0.0100 max
Ca 0.0200 0.0200 0.0200 max
Li 0.0005 0.0005 0.0005 max
Others Each 0.0300 0.0300 0.0300 max
Others Total 0.1000 0.1000 0.1000 max