ASTM E745 PDF

Standard Practices for Simulated Service Testing for Corrosion of Metallic Containment Materials for Use With Heat-Transfer Fluids in Solar Heating and Cooling Systems (Withdrawn 2018)

ASTM E745 – Standard Practices for Simulated Service Testing for Corrosion of Metallic Containment Materials for Use With Heat-Transfer Fluids in Solar Heating and Cooling Systems (Withdrawn 2018)

1.1 These practices cover test procedures simulating field service for evaluating the performance under corrosive conditions ofmetallic containment materials in solar heating and cooling systems. All testresults relate to the performance of the metallic containment material onlyas a part of a metal/fluid pair. Performance in these test procedures, takenby itself, does not necessarily constitute an adequate basis for acceptanceor rejection of a particular metal/fluid pair in solar heating and coolingsystems, either in general or in a particular design.

1.2 These practices describe test procedures used to evaluate the resistance to deterioration of metallic containment materialsin the several conditions that may occur in operation of solar heating andcooling systems. These conditions include: (1) operatingfull flow; (2) stagnant empty vented; (3) stagnant, closed to atmosphere, non-draindown; and (4) stagnant, closed to atmosphere, draindown.

1.3 The recommended practices cover the following three tests:

1.3.1 Practice A – Laboratory Exposure Test for Coupon Specimens.

1.3.2 Practice B – Laboratory Exposure Test of Components or Subcomponents.

1.3.3 Practice C – Field Exposure Test of Components or Subcomponents.

1.4 Practice A provides a laboratory simulation of various operating conditions of solar heating and cooling systems. It utilizescoupon test specimens and does not provide for heating of the fluid by thecontainment material. Practice B provides a laboratory simulation of variousoperating conditions of a solar heating and cooling system utilizing a componentor a simulated subcomponent construction, and does provide for heating ofthe fluid by the containment material. Practice C provides a field simulationof various operating conditions of solar heating and cooling systems utilizinga component or a simulated subcomponent construction. It utilizes controlledschedules of operation in a field test.

1.5 The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.6 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. For a specific safety precaution statement see Section 6.