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GMW16436

M00002508

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GMW16436 3rd Edition, April 2020 Dendrite Arm Spacing Measurement of Aluminum Castings

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Description / Abstract: Purpose.

This standard covers the process for determining and reporting the microstructural fineness of aluminum castings. Two (2) methods are presented in this standard:

Method A (Appendix A).

Secondary Dendrite Arm Spacing (SDAS) as measured via the linear intercept method.

Method B (Appendix B).

Mean Linear Dendrite Spacing (MLDS) as measured via an image analysis routine.