Rationale

Revise Socpe to clarify that this specification should be used for all aluminum alloy permanent mold castings. Revise wording to allow use of other ferrous alloys than iron for molds. Revise Number of Tests section to clarify the number of test specimens required. Revise footnote to explain that times and temperature shown ifor heat treatment are ones commonly used and not required Correct footnotes for E357.0 - T61