These castings have been used typically for parts requiring a combination of light weight, high yield strength up to 570 °F (298 °C), and relatively high corrosion resistance, but usage is not limited to such applications.
Rationale: AMS4427C revises Composition test method (3.1), removes hardness from the list of periodic tests (4.2.2), revises sampling for chemistry analysis specimens (4.3.1) and is a Five Year Review and update of this specification.
Also known as: SAE AMS 4427
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