Standard Reference Radiographs for Heavy-Walled (4<fraction><num>1</num><den>2</den></fraction > to 12 in. (114 to 305 mm)) Steel Castings
< div class=" SectionLevel2" > < p class=" subsec1 cdone2" > < span class=" Head3 cdone" > 1.1< / span> These reference radiographs< span style=" font-style:normal " > < span class=" footnote-link" > 2< / span> < / span> illustrate various categories, types, and severity levels of discontinuities occurring in steel castings that have section thicknesses of 41/ < sub> 2< / sub> to 12 in. (114 to 305 mm). The reference radiograph films are an adjunct to this document and must be purchased separately from ASTM International, if needed (see < span class=" Body-link1 cdone" > 2.2< / span> ). Categories and severity levels for each discontinuity type represented by these reference radiographs are described in < span class=" Body-link1 cdone" > 1.2< / span> .
< span class=" note cdone" style=" text-transform: uppercase " > Note 1:< / span> < span class=" note cdone" > The basis of application for these reference radiographs requires a prior purchaser supplier agreement of radiographic examination attributes and classification criterion as described in Sections < span class=" Note-link1 cdone" > 4< / span> , < span class=" Note-link1 cdone" > 6< / span> , and < span class=" Note-link1 cdone" > 7< / span> of this standard. Reference radiographs for other steel casting thicknesses may be found in Reference Radiographs < span class=" Note-link1 cdone" > E446< / span> and < span class=" Note-link1 cdone" > E186< / span> . Reference Radiographs < span class=" Note-link1 cdone" > E186< / span> provides some overlap of severity levels for similar discontinuity categories within the same energy level range (see < span class=" Note-link1 cdone" > 4.3< / span> , < span class=" Note-link1 cdone" > 5.1< / span> , and < span class=" Note-link1 cdone" > 6.3< / span> ).< / span>
(1) < span class=" overriddenformat" style=" font-style:italic font-weight:normal " > Ca Linear Shrinkage< / span> —Severity levels 1 through 5 (called Type 1 in previous revisions).
(2) < span class=" overriddenformat" style=" font-style:italic font-weight:normal " > Cb Feathery Shrinkage < / span> —Severity levels 1 through 5 (called Type 2 in previous revisions).
(3) < span class=" overriddenformat" style=" font-style:italic font-weight:normal " > Cc Sponge Shrinkage< / span> —Severity levels 1 through 5 (called Type 3 in previous revisions).
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