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ASTM

A997-08(2018)

Standard Practice for Investment Castings, Surface Acceptance Standards, Visual Examination

2018

2

ASTM Vol.01.02 (2023)

This practice covers the acceptance criteria for surface inspection of investment castings by visual examination.

This practice is expressed in both inch-pound units and in SI units; however, unless the purchase order or contract specifies the applicable M-specification designation (SI units), the inch-pound units shall apply.

The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in nonconformance with the standard.

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