More E Scope 1. The reference radiograph films are an adjunct to this document and must be purchased separately from ASTM International, if needed see 2. Categories and severity levels for each discontinuity type represented by these reference radiographs are described in 1.
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More E Scope 1. The reference radiograph films are an adjunct to this document and must be purchased separately from ASTM International, if needed see 2. Categories and severity levels for each discontinuity type represented by these reference radiographs are described in 1. Reference radiographs for other steel casting thicknesses may be found in Reference Radiograph standards E and E Reference Radiograph standards E and E provide some overlap of severity levels for similar discontinuity categories within the same energy level range see 4.
This includes cobalt or equivalent isotope radiation and from 2—MV up to 4—MV X rays- Set of 28 plates nominal 5 by 8 in. Each volume consists of three categories of graded discontinuities in increasing severity levels, and three categories of ungraded discontinuities.
Reference radiographs containing ungraded discontinuities are provided as a guide for recognition of a specific casting discontinuity type where severity levels are not needed. Following is a list of discontinuity categories, types and severity levels for the adjunct reference radiographs of this standard: 1. Called Type 1 in previous revisions 2 Cb—feathery shrinkage—Severity levels 1 through 5.
Called Type 2 in previous revisions 3 Cc—sponge shrinkage—Severity levels 1 through 5. Called Type 3 in previous revisions 1. SI values are shown for information only. 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.
ASTM E186 PDF
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astm e 186.pdf
A number in parentheses indicates the year of last reapproval. A superscript epsilon e indicates an editorial change since the last revision or reapproval. This standard has been approved for use by agencies of the Department of Defense. Scope 1.