ASTM D1384 & D8040
The ASTM D1384 and ASTM D8040 test methods covers a simple beaker-type procedure for evaluating the effects of engine coolants or heat transfer fluids on metal specimens under controlled laboratory conditions. In the test method, specimens of metals typical of those present in engine coolant solutions and heat transfer fluids are totally immersed in aerated engine coolant solutions or heat transfer fluids for 336 hours at 88°C (190°F). The corrosion-inhibitive properties of the test solution are evaluated on the basis of the weight changes incurred by the specimens. These test methods will generally distinguish between coolants and heat transfer fluids that are deﬁnitely deleterious from the corrosion standpoint and those that are suitable for further evaluation.