ASTM E3030-19e1

standard by ASTM International, 08/15/2019
Standard Digital Reference Images for Heavy-Walled (2 to 4<fraction><num>1</num><den>2</den></fraction > in. (50.
Category: ASTM

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Description

Full Description

1.1 These digital reference images illustrate various categories, types, and severity levels of discontinuities occurring in steel castings that have section thicknesses of 2 in. (50.8 mm) to less than 4¹/₂ in. (114 mm). The digital reference images are an adjunct to this standard and must be purchased separately from ASTM International, if needed (see 2.3). Categories and severity levels for each discontinuity type represented by these digital reference images are described in 1.2.

Note 1: The basis of application for these reference images requires a prior purchaser supplier agreement of radiographic examination attributes and acceptance criteria as described in Sections 4, 6, and 7 of this standard.

1.2 These digital reference images consist of three separate volumes (see Note 2) as follows: (I) 1 MV X-rays and Iridium-192, (II) 2 MV to 4 MV X-rays and Cobalt-60, and (III) 4 MV to 30 MV X-rays. Unless otherwise specified in a purchaser supplier agreement (see 1.1), each volume is for comparison only with production digital images produced with radiation energy levels within the thickness range covered by this standard. Each volume consists of five categories of graded discontinuities of increasing severity level and three categories of ungraded discontinuities. Reference images containing ungraded discontinuities are provided as a guide for recognition of a specific casting discontinuity type where severity levels are not needed. The following is a list of discontinuity categories, types, and severity levels for the adjunct digital reference images of this standard:

1.2.1 Category A-Gas porosity; severity levels 1 through 5.

1.2.2 Category B-Sand and slag inclusions; severity levels 1 through 5.

1.2.3 Category C-Shrinkage; 3 types:

1.2.3.1 Ca - Linear Shrinkage-Severity levels 1 through 5.

1.2.3.2 Cb - Feathery Shrinkage-Severity levels 1 through 5.

1.2.3.3 Cc - Sponge Shrinkage-Severity levels 1 through 5.

1.2.4 Category D-Crack; 1 illustration.

1.2.5 Category E-Hot tear; 1 illustration.

1.2.6 Category F-Insert; 1 illustration.

Note 2: The digital reference images consist of the following:

Volume I: 1 MV X-rays and Iridium-192 Volume II: 2 MV to 4 MV X-rays and Cobalt-60 Volume III: 4 MV to 30 MV X-rays

1.3 All areas of this standard may be open to agreement between the cognizant engineering organization and the supplier, or specific direction from the cognizant engineering organization. These items should be addressed in the purchase order or the contract.

1.4 Units-The values stated in inch-pound units are to be regarded as standard. The values given in parentheses are mathematical conversions to SI units that are provided for information only and are not considered standard.

1.5 These digital refere