TAA Metal Specification

Posted: 04/10/2015


The chemical limits below do not apply to metal recovered from Logan dross.  Element reporting at the bottom of this page does apply to metal recovered from Logan dross.

Element 3004A GS6 GS7 3105
Si # # # #
Fe # # # #
Cu # # # #
Mn # # # #
Mg # # # #
Pb 0.0100 0.0120 0.0140 0.0150
Cd 0.002 0.002 0.002 0.002
Zn* 0.15 0.18 0.20 0.35*
Ti 0.02 0.03 0.04 0.05
Na 0.020 0.025 0.030 0.030
Ca 0.020 0.025 0.030 0.030
Cr* 0.03 0.05 0.07 0.20*
B 0.0010 0.0010 0.0010 0.0010
Be 0.0001 0.0001 0.0001 0.0001
Li 0.0005 0.0005 0.0005 0.0005
Zr** 0.0055 0.0055 0.0055 0.0055
Ga 0.03 0.03 0.03 0.03
Others Each 0.03 0.04 0.05 0.05
Others Total 0.10 0.12 0.15 0.15

# Refer to your supply contract for these limits.  You may also contact Tri-Arrows Aluminum Inc. for more details.

* Preferred Cr <0.15 an Zn <0.30

 

 

Element 5182A 5182B 5182C
Si 0.14 0.17 0.20
Fe 0.28 0.30 0.33
Cu 0.07 0.10 0.12
Mn 0.43 0.45 0.47
Mg 5.0-12.0 4.5-12.0 3.0-12.0
Pb 0.0100 0.0110 0.0120
Cd 0.010 0.013 0.015
Zn 0.07 0.10 0.15
Ti 0.05 0.06 0.07
Na 0.0020 0.0025 0.0030
Ca 0.030 0.030 0.035
Cr 0.04 0.05 0.06
B 0.0010 0.0010 0.0010
Be 0.0001 0.0001 0.0001
Li 0.0005 0.0005 0.0005
Zr** 0.0055 0.0055 0.0055
Ga 0.03 0.03 0.03
Others Each 0.03 0.04 0.05
Others Total 0.10 0.12 0.15

The above are maximums expressed in percent of total
Others each includes: Bi, Ni, Sn, V
Others total includes: Ti, Na, Ca, Cd, Pb, Be, Ni, Cr, Sn, V, B.

** The maximum Zr level per heat in a shipment is 0.0055%. Zr contamination typically comes from some Mg alloys or some 7000 series scrap.  Zr analysis from the supplier is required as indicated by the Element Reporting Requirements table below.

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

Element Reporting Requirements for RSI and primary aluminum are shown below.

Lithium
Primary aluminum from reduction plants using Lithium in their process is not acceptable.  The maximum allowed Li is 0.0005% (5 ppm) for all grades of primary aluminum unless otherwise agreed upon.

RSI Sow Heat Variation
Maximum heat variation for all TAA 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 TAA.

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

Name Symbol RSI (40) Prime
Aluminum
(30)
Slab, Plate,
Coil, Other *
(16)
Decimal
Reporting
Silicon Si Y Y Y 3
Iron Fe Y Y Y 3
Copper Cu Y   Y 3
Manganese Mn Y   Y 3
Magnesium Mg Y   Y 3
Chromium Cr Y   Y 3
Nickel Ni Y   Y 3
Zinc Zn Y Y Y 3
Titanium Ti Y   Y 3
Boron B Y   Y 4
Sodium Na Y R** Y 4
Calcium Ca Y R** Y 4
Lithium Li Y R** Y 4
Vanadium V Y Y Y 4
Lead Pb Y R** Y 4
Tin Sn Y   Y 4
Bismuth Bi Y   Y 4
Beryllium Be Y   Y 4
Cadmium Cd Y   Y 4
Phosphorus P Y   Y 4
Antimony Sb R**   Y 4
Zirconium Zr Y     4
Gallium Ga Y Y Y 4
           

* Aluminum alloys, excludes prime aluminum and RSI
** R=Recommended