SEFA Results
SEFA Results
FINISH TEST
CHEMICAL RESISTANCE TESTING ( RATING SCALE )
LEVEL 0 = NO DETECTABLE CHANGE LEVEL 1 = SLIGHT CHANGE IN COLOR OR GLOSS LEVEL 2 = SLIGHT SURFACE ETCHING OR SEVERE STAINING LEVEL 3 = PITTING, CRATERING, SWELLING, EROSION OF COATING, OBVIOUS & SIGNIFICANT SRETIORATION
10.1.1 Purpose of Test The purpose of the chemical spot test is to evaluate the resistance the finish has to chemical spills. 10.1.2 Test Procedure
The received sample measuring 14” x 24” was tested for chemical resistance as described herein. The panel was placed on a flat surface, cleaned with soap and water, then blotted dry. The panel was conditioned for 48 hours at 73+3˚F and 50+ 5% relative humidity. The panel was then tested for chemical resistance using forty-nine different chemical reagents by one of the following methods. Method A - Volatile chemicals were tested by placing a cotton ball saturated with reagent in the mouth of a 1-oz. bottle an inverting the bottle on the surface of the panel. Method B - Non-volatile chemicals were tested by placing five drops of the reagent on the surface of the panel and covering with a 24mm watch glass, convex side down. For both methods, the reagents were left on the panel for a period of one hour, then washed off with water, cleaned with detergent and naptha, and rinsed with deionized water. The panel was then dried with a towel and evaluated after 24-hours at 73± 3˚F and 50 ± 5% relative humidity. 10.1.3 Acceptance Level Chemical test exceeded the requirements of no more than four of 49 chemicals tested failed with a fail rate of three.
CHEMICAL
RATING
COMMENTS
Amyl Acetate Ethyl Acetate
0 0 0 0 0 0 0 0 2 0 0 0 0 0 1 0 0 0 0 0 0 0 0 2 0 2 0 0 0 0 0 0 2 0 0 0 2 2 2 0 0 0 2 2 1 0 0 0 0
Acetic Acid 98%
Acetone
Acid Dichromate 5%
Butyl Alcohol Ethyl Alcohol Methyl Alcohol
Ammonium Hydroxide 28%
Severe staining (dark became black)
Benzene
Carbon Tetrachloride
Chloroform
Chromic Acid 60%
Cresol
Dichloro Acetic Acid Dimethylformanide
Slight change in gloss
Dioxane
HOT WATER TEST
Ethyl Ether
10.2.1 Purpose of Test The purpose of this test is to insure the coating is resistant to hot water. 10.2.2 Test Procedure
Formaldehyde 37% Formic Acid 90%
Furfural Gasoline
Hot water (190˚F. to 205˚F) was allowed to trickle with a steady stream and at a rate of not less than 6 ounces/minute on the finished surface, which was set at an angle of 45˚, for a period of five minutes. 10.3.3 Acceptance Level After cooling and wiping dry, the finish showed no visible effect from the hot water.
Hydrochloric Acid 37% Hydrofluoric Acit 48% Hydrogen Peroxide 3% Tincture of Iodine Methyl Ethyl Ketone Methylene Chloride Mono Chlorobenzene
Severe staining (surface became white)
Severe staining (surface became yellow)
IMPACT TEST
10.3.1 Purpose of Test The purpose of this test is to evaluate the ductility of the coating. 10.3.2 Test Procedure
VM&P
Nitric Acid 20% Nitric Acid 30% Nitric Acid 70%
A one-pound ball approximately 2” in diameter was dropped from a distance of 12” onto the flat horizontal surface, which was coated to DWI standard manufacturing method. 10.3.3 Acceptance Level There is no visual evidence to the naked eye of cracks or checks in the finish due to impact.
Severe staining (surface became brown)
Phenol 90%
Phosphoric Acid 85% Silver Nitrate (Saturated) Sodium Hydroxide 10% Sodium Hydroxide 20% Sodium Hydroxide 40% Sodium Hydroxide Flake Sodium Sulfide (Saturated)
Severe staining (dark grain became black) Severe staining (dark grain became black) Severe staining (dark grain became black)
Sulfuric Acid 25% Sulfuric Acid 85% Sulfuric Acid 96%
Severe staining (dark grain became brown) Severe staining (dark grain became black) Slight change in color (yellow stain)
Sulfuric Acid 85% & Nitric Acid 70% (Equal Parts)
Toluene
Trichloroethylene
Xylene
Zinc Chloride Saturated TOTAL OF ALL RATINGS
20
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