1964 Exposure Test of Porcelain Enamels on Aluminum: Three Year InspectionU.S. National Bureau of Standards, 1970 - 11 pages An exposure test of porcelain enamels on aluminum was initiated by the National Bureau of Standards and the Porcelain Enamel Institute in 1964.The enamels were returned from the exposure sites to the laboratory at NBS to be measured for changes in gloss and col * or after exposures of six months, one year, and three years.Changes were found to be greatest at Kure Beach and least at Montreal and Los Angeles, with moderate changes occurring at Washington and New York.Although the boiling citric acid test is used as an acceptance test for these enamels, the correlation with color change, particularly at Kure Beach, was not as good as expected.A cupric chloride test was developed which shows an improvement in this correlation.(Author). |
From inside the book
Results 1-5 of 5
Page 1
... indicated in table 1 . The enamels in this test were coded for identifica- tion . Each enamel system can be identified by the first two code letters . The first letter is always A and indicates an enamel on aluminum . This letter may ...
... indicated in table 1 . The enamels in this test were coded for identifica- tion . Each enamel system can be identified by the first two code letters . The first letter is always A and indicates an enamel on aluminum . This letter may ...
Page 4
... and high , 70 or over . The average color - retention data ( top section of table 5 ) indicate Enamel Kure Beach New York Washington Los Angeles Montreal 6 4 Comparison of Exposure Sites Effect of Different Colors Effect of Initial Gloss.
... and high , 70 or over . The average color - retention data ( top section of table 5 ) indicate Enamel Kure Beach New York Washington Los Angeles Montreal 6 4 Comparison of Exposure Sites Effect of Different Colors Effect of Initial Gloss.
Page 5
... indicated no consistent correlation between color retention and initial gloss . 3.6 . Effect of Coating Thickness The average color retention for the one- and two- coat enamels ( top part of table 6 ) indicates a differ- ence in these ...
... indicated no consistent correlation between color retention and initial gloss . 3.6 . Effect of Coating Thickness The average color retention for the one- and two- coat enamels ( top part of table 6 ) indicates a differ- ence in these ...
Page 10
... indicated by the smaller residual standard deviations ( see table 7 ) for the fits of the least squares lines ... indicate that the enamels in the current test are as durable as the early porcelain enamels on aluminum at all sites , and ...
... indicated by the smaller residual standard deviations ( see table 7 ) for the fits of the least squares lines ... indicate that the enamels in the current test are as durable as the early porcelain enamels on aluminum at all sites , and ...
Page 11
... indicated that : 1. The color retention of all colors except reds was good at all sites except Kure Beach . 2. There was no significant spalling on any of the enamels originally included in this test . One nature - tone enamel added to ...
... indicated that : 1. The color retention of all colors except reds was good at all sites except Kure Beach . 2. There was no significant spalling on any of the enamels originally included in this test . One nature - tone enamel added to ...
Common terms and phrases
1964 Exposure Test 25 cents accordance with ASTM acid resistance acid solubility test acid spot test AG-C Angeles Montreal ASTM Book ASTM designation E-376 automatic data processing Average color retention boiling acid solubility boiling cupric chloride Book of Standards Building Science Series Bureau of Standards change in NBS citric acid spot color change color-retention data correlation between color cupric chloride test Eddy Current enamel colors Enamel Kure Beach enamel systems enamels exposed enamels included enamels on aluminum exposed at Kure gloss and color gloss range high gloss enamels initial gloss Interrelations Between Cement Kure Beach Washington low gloss enamels Medium minus the color Montreal Los Angeles National Bureau nature-tone enamels NBS units percentage gloss retained porcelain enamels Portland Cement Resistance of Porcelain RETENTION AFTER 3-YEARS retention is 100 retention of porcelain sign test Spalling specimens specular gloss spot test ratings Test of Porcelain Washington New York Weather Resistance York Montreal