ASTM International - ASTM C703-72(2011)e1
Standard Test Methods for Spalling Resistance of Porcelain Enameled Aluminum
| Organization: | ASTM International |
| Publication Date: | 1 April 2011 |
| Status: | inactive |
| Page Count: | 4 |
| ICS Code (Enamels): | 25.220.50 |
significance And Use:
It is difficult to overemphasize the importance of the spall test. Porcelain enameled aluminum that fails this test will probably spall in service if subjected to moisture or weathering.
scope:
1.1 These test methods cover accelerated determination of the resistance of porcelain enamel coatings on aluminum alloys to spalling from exposure to moisture or weathering. Test Method A, using a 5 % solution of ammonium chloride, requires 96-h immersion while Test Method B, using a 1 % solution of antimony trichloride, is completed after 20 h of immersion. The spalling tendency is evaluated by the same criteria in both methods. While either method is suitable for magnesium silicon alloys, such as 6061, Test Method B is preferred for simple alloys or commercially pure aluminum, such as 1100.
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