Eastern Alloys is North America's premier supplier of Zinc-Aluminum-Magnesium alloys for hot-dip coated steel products. These alloys have superior corrosion resistance and formability, which allows for longer service, lower manufacturing costs and an overall lower carbon footprint. Eastern Alloys can provide a range of Zn-Al-Mg based alloys following the ASTM B1022 guidelines (shown below), or we can offer a unique blend...
Chemical Analysis
ASTM B1022 | Al (%)E | Mg (%)E | ToleranceE | Additional(Max %)B | Cu(Max %) | Fe(Max %) | Pb(Max %) | Cd(Max %) | Sn(Max %) | ZnD |
| Type 1A,B,C | 5.0-13.0 | 2.0-4.0 | 0.5 | 1.0 | 0.10 | 0.08 | 0.01 | 0.007 | 0.007 | Bal |
| Type 2A,B,C | 3.0-4.9 | 2.0-4.0 | 0.3 | 1.0 | 0.10 | 0.08 | 0.01 | 0.007 | 0.007 | Bal |
| Type 3A,B,C | 3.0-6.0 | 0.40-1.9 | 0.3 | 1.0 | 0.10 | 0.08 | 0.01 | 0.007 | 0.007 | Bal |
| Type 4A,B,C | 0.50-2.9 | 0.40-2.5 | 0.2 | 1.0 | 0.10 | 0.08 | 0.01 | 0.007 | 0.007 | Bal |
| Type 5A,B,C | 0.50-2.9 | 2.6-4.0 | 0.2 | 1.0 | 0.10 | 0.08 | 0.01 | 0.007 | 0.007 | Bal |
| Type IIA,B,C | 4.5-6.2 | 0.06-0.15 | 0.3 Al, 0.05 Mg | | 0.10 | 0.08 | 0.01 | 0.007 | 0.007 | Bal |
Notes:
A For purposes of acceptance and rejection, the observed value or calculated value obtained from analysis should be rounded to the nearest unit in the last right-hand place of figures, used in expressing the specified limit, in accordance with the rounding procedure in Section 3 of Practice E29.
B By agreement between the supplier and the user, one or more additional alloying elements (except iron) may be specified up to a combined total of 1%.
C Zn-Al-Mg alloy ingot for hot-dip coatings may contain antimony in amounts of up to 0.002%. No detrimental effects on alloy performance have ever been noted due to the presence of this element up to this concentration and, therefore, analyses are not required for this element.
D For information only. Quantitative determination of this element is not required. Zinc is assumed to be the difference between 100% and the sum of those elements listedabove (or additional as specified and agreed upon between the supplier and user).
E The customoer may request specific targe levels for Al or Mg, or both. The listed tolerance will represent the acceptable range around the target that may be specified. For example, a customer may specify Type 1 alloy with a target Al level of 9%, then the acceptable range would be 8.5% to 9.5%.
