1.1This practice covers the acceptance criteria for the surface inspection of steel castings by visual examination. Four levels of acceptance standards are provided.

1.2Acceptance levels utilize Steel Castings Research and Trade Association (SCRATA)2 graded reference comparators for the visual determination of surface texture, surface roughness, and surface discontinuities described as follows: Acceptance levels

A-Surface Texture

B-Nonmetallic Inclusions

C-Gas Porosity

D-Solidification Discontinuities

E-Sand Expansion Discontinuities

F-Metal Inserts

G-Thermally Cut Surfaces

H-Mechanically Prepared Surfaces

J-Welded Surfaces

1.3Descriptions of terms related to casting discontinuities are in Section 2.

1.4This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.