ASTM E712 PDF

Standard Practice for Laboratory Screening of Metallic Containment Materials for Use With Liquids in Solar Heating and Cooling Systems (Withdrawn 2018)

ASTM E712 – Standard Practice for Laboratory Screening of Metallic Containment Materials for Use With Liquids in Solar Heating and Cooling Systems (Withdrawn 2018)

1.1 This practice covers several laboratory test procedures for evaluating corrosion performance of metallic containment materials underconditions similar to those that may occur in solar heating and cooling systems.All test results relate to the performance of the metallic containment materialonly as a part of a metal/fluid pair. Performance in these laboratory testprocedures, taken by itself, does not necessarily constitute an adequate basisfor acceptance or rejection of a particular metal/fluid pair in solar heatingand cooling systems, either in general or in a particular design. This practiceis not intended to preclude the use of other screening tests, particularlywhen those tests are designed to more closely simulate field service conditions.

1.2 This practice describes apparatus and procedures for several tests, any one or more of which may be used to evaluate the deteriorationof the metallic containment material in a metal/fluid pair. The proceduresare designed to permit simulation, heating, and cooling systems including(1) operating full flow, (2)stagnant full, (3) stagnant partial fill, and (4) stagnant empty. Particular attention should be directedto properly reflecting whether the system is open or closed to atmosphere.

1.3 This practice covers the following six tests:

1.4 Practice A is concerned with the interaction of metal and fluid when both are at the same temperature with no heat transferfrom one to the other. It is regarded as useful for plumbing, pumps, tanking,etc., but of less significance, taken by itself, for collector panels. PracticesB and F are concerned with the deterioration of the metal when there is transferof heat from the metal into the heat transfer fluid. These practices are especiallyapplicable to the collector panel. Practice C permits a variety of tests butis especially useful in relation to systems that experience high temperatures,or are closed to the atmosphere. Practices D and E evaluate specific corrosionproblems that may be associated with particular metal/fluid pairs and particulardesigns of systems and components.

1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibilityof the user of this standard to establish appropriate safety and health practicesand determine the applicability of regulatory limitations prior to use.