ARCO Metal Specification (Revised 12/21/09)
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Element3004A GS6GS7 3105
Si0.220.260.300.60
Fe0.500.600.700.70
Cu0.260.300.350.30
Mn0.5-1.400.3-1.60.1-2.00.3-2.0
Mg0.7-2.00.4-2.00.1-2.40.2-2.4
Pb 0.0100 0.0130 0.0150 0.0150
Cd0.0100.0130.0150.015
Zn0.150.180.200.35*
Ti0.020.030.040.05
Na 0.020 0.025 0.030 0.030
Ca 0.020 0.025 0.030 0.030
Cr0.030.050.07 0.20*
B0.00100.00100.00100.0010
Be0.00010.00010.00010.0001
Li0.00050.00050.00050.0005
Others Each0.030.040.050.05
Others Total0.100.120.150.15
Element5182A 5182B5182C
Si0.140.170.20
Fe0.280.300.33
Cu0.070.100.12
Mn0.430.450.47
Mg5.0-12.04.5-12.03.0-12.0
Pb 0.0100 0.0110 0.0120
Cd0.0100.0130.015
Zn0.070.100.15
Ti0.050.060.07
Na 0.020 0.025 0.030
Ca 0.020 0.025 0.030
Cr0.040.050.06
B0.00100.00100.0010
Be0.00010.00010.0001
Li0.00050.00050.0005
Others Each0.030.040.05
Others Total0.100.120.15
The above are maximums expressed in percent of total
Others each includes: Bi, Ni, Sn, Zr, V
Others total includes: Ti, Na, Ca, Cd, Pb, Be, Ni, Cr, Sn, V, Zr, B.

Must be low profile sow or standard T-Bar
All pieces must be marked with heat number

*Preferred Cr<.15, Zn<.30
Element Reporting Requirements for RSI and primary aluminum are shown below.

Lithium

Material from reduction plants using Lithium in their process is not acceptable.

RSI Sow Heat Variation

Maximum heat variation for all ARCO Specs must be no greater than 150% of the average per element. Heat variation greater than 150% of the average per element will not be accepted without prior approval from ARCO.

Italicized numbers in the specification tables above are absolute maximums by heat, unless otherwise approved in advance of shipment.

Loading of RSI Sow
Please load heats on truck/railcar in the same order as listed on the COA sheet. This does not apply to prime aluminum.

For additional shipping requirements click here for the RSI/Prime/Meltable Shipping and Receiving page.

Prime Standards

Aluminum Association Gold Sheets - International Designations and Chemical Composition Limits for Unalloyed Aluminum - North American and International Registration Record, March, 2007 can be obtained from:

http://www.aluminum.org

Element Reporting Requirements

NameSymbol RSI (40)Prime
Aluminum
(30)
Slab, Plate,
Coil, Other *
(16)
Decimal
Reporting
SiliconSiYYY3
IronFeYYY3
CopperCuYYY3
ManganeseMnYYY3
MagnesiumMgYYY3
ChromiumCrYYY3
NickelNiY Y3
ZincZnYYY3
TitaniumTiY YY3
BoronBYYY4
SodiumNaYYY4
CalciumCaYYY4
LithiumLiYYY4
VanadiumVYYY4
LeadPbY R**Y4
TinSnY Y4
BismuthBiY Y4
BerylliumBeY Y4
CadmiumCdY Y4
PhosphorusPY Y4
AntimonySbR** Y4
ZirconiumZrY  4
GalliumGaYYY4

* Aluminum alloys, excludes prime aluminum and RSI
** R=Recommended
Logan Aluminum Inc. is jointly owned by ARCO and Novelis