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). |
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Page 1
... 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 color after exposures of six months , one year ...
... 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 color after exposures of six months , one year ...
Page 3
... change in gloss was noted on the high gloss enamels while an increase of ... NBS units . 3.1 . Visual Observation of Enamels a . Amount of Soil Retained ... change as uniformly with exposure time as color . The nonuniformity is prob ably ...
... change in gloss was noted on the high gloss enamels while an increase of ... NBS units . 3.1 . Visual Observation of Enamels a . Amount of Soil Retained ... change as uniformly with exposure time as color . The nonuniformity is prob ably ...
Page 6
... change in NBS units . b Computed from three specimens at each site . TABLE 4. Color Retention for the various colors of porcelain enamels on aluminum after three years ' exposure Average color retention for the enamels exposed at ...
... change in NBS units . b Computed from three specimens at each site . TABLE 4. Color Retention for the various colors of porcelain enamels on aluminum after three years ' exposure Average color retention for the enamels exposed at ...
Page 7
... NEW YORK ; 4 MONTREAL , 5 LOS ANGELES . 1 KURE BEACH ; 100 98 96 94 92 90 88 86 COLOR RETENTION 4 2 B 80 78 76 74 72 70 68 66 12345 64 BROWN Lt. GREEN WHITE YELLOW GREY ... change in NBS units . TABLE 6. Effect of one and two coats on the. 7.
... NEW YORK ; 4 MONTREAL , 5 LOS ANGELES . 1 KURE BEACH ; 100 98 96 94 92 90 88 86 COLOR RETENTION 4 2 B 80 78 76 74 72 70 68 66 12345 64 BROWN Lt. GREEN WHITE YELLOW GREY ... change in NBS units . TABLE 6. Effect of one and two coats on the. 7.
Page 8
... New York Montreal Los Angeles All Enamels One . Two . 81.8 94.5 95.6 98.5 96.7 97.1 97.5 98.6 98.8 98.9 White Enamels Only One .. Two .. 96.4 98.2 98.7 98.6 98.4 95.5 98.0 98.6 98.1 98.1 • Color retention is 100 minus the color change in ...
... New York Montreal Los Angeles All Enamels One . Two . 81.8 94.5 95.6 98.5 96.7 97.1 97.5 98.6 98.8 98.9 White Enamels Only One .. Two .. 96.4 98.2 98.7 98.6 98.4 95.5 98.0 98.6 98.1 98.1 • Color retention is 100 minus the color change in ...
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