ASTM D1882-17(R2021) pdf free download
ASTM D1882-17(R2021) pdf free download.Standard Test Method for Effect of Cooling System Chemical Solutions on Organic Finishes for Automotive Vehicles
1. Scope
1.1 This test method determines the effect ofcooling system chemical solutions on organic finishes used on motor vehicles. Cooling system chemicals include: coolants or corrosion inhibitors, or both, cooling system cleaners or flushes, or both, and stop leak additives. N OTE 1—This test method is a modification of Method of Test D1540. 1.2 The values stated in SI units are to be regarded as standard. The values given in parentheses after SI units are provided for information only and are not considered standard. 1.3 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appro- priate safety, health, and environmental practices and deter- mine the applicability ofregulatory limitations prior to use. 1.4 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
3. Summary of Test Method
3.1 Concentrated or diluted cooling system chemical solu- tions are brought into contact with organic finishes typical of those used on automobiles for 1 h at room temperature. The surface of the finish then is inspected visually for any of the surface changes mentioned in Section 4.
4. Significance and Use
4.1 This test method will distinguish between cooling sys- tem chemical solutions that do or do not have a tendency to change the surface appearance when applied to organic finishes used on vehicles. Such changes may be manifested by discoloration, loss ofgloss, softening, swelling, or other similar phenomena.
5. Materials
5.1 Test Panels—Steel panels, approximately 100 mm by 150 mm (4 in. by 6 in.) shall be prepared in accordance with the Methods of Preparation of Practice D609. The surface of the test panels shall be roughened to 0.25 µm to 0.50 µm (10 µin. to 20 µin.) prior to applying the organic finish. These panels shall be coated with an organic finish ofthe type used on vehicles such as clear coated and non-clear coated thermoset urethane and acrylic urethane finishes. Other finishes and painted panels of varying age and dimensions (24 in. 2 mini- mum) may be used upon agreement between the customer and supplier.
6. Test Solution
6.1 The coolant to be tested shall be either a concentrate or a dilution. Sufficient ASTM Type IV water shall be added to yield a solution of 50 % concentration by volume in accor- dance with Practice D1176, section on Preparation ofSolutions Requiring Inclusion of Separated Solids and Liquids. Any separated solids or liquids shall be included in the test material.6.2 Other cooling system chemicals shall be tested both without dilution and at a typical use concentration as indicated by instructions on the label. Any separated solids or liquids shall be included in the test material.
7. Procedure
7.1 Conduct the test at 25 °C 6 5 °C without humidity control. 7.2 Select a test panel prepared in accordance with Section 5. Place sufficient test solution on the surface of the test panel to form spots approximately 25 mm (1 in.) in diameter. 7.3 After 1 h, wipe the surface with a wet cloth, buff with a soft, dry cloth and examine the finish for visual and physical evidence of the effects listed in Section 4. 7.4 Lightly polish the test surface with any well-known liquid car cleaner. Compare the untreated area with the treated spots on the basis of removability of the stain. N OTE 2—Stains may disappear after short exposure to the weather, for example, 8 h to 24 h of sunshine. Such stains are considered by some persons to be unobjectionable.
