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ASTM E71

1964 Edition, August 31, 1964

Complete Document

Standard Reference Radiographs for Steel Castings up to 2 in. (51mm) in Thickness



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Superseded By: ASTM E446

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W/D S/S BY ASTM E446
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Product Details:

  • Revision: 1964 Edition, August 31, 1964
  • Published Date: August 31, 1964
  • Status: Superseded By:
  • Superseded By: ASTM E446
  • Document Language: English
  • Published By: ASTM International (ASTM)
  • Page Count: 2
  • ANSI Approved: No
  • DoD Adopted: No

Description / Abstract:

These reference radiographs illustrate various types and degrees of discontinuities occurring in steel castings which have section thicknesses (Note 1) of up to 2 in. (51 mm). They are intended to provide the following:

A guide enabling recognition of discontinuities and their differentiation both as to type and severity level.

Example radiographic illustrations of discontinuities and a nomenclature for reference in acceptance standards, specifications, and drawings.

A source of reference radiographs from which purchasers and suppliers may, by mutual agreement, select particular radiographs to serve as standards representing minimum acceptability. At the same time, the standards so established may be unambiguously identified by alphabetic defect type designation and severity level.

NOTE 1-Reference radiographs applicable to investment and all thin-wall close tolerance steel castings up to 1 in. (25mm) in thickness are contained in ASTM Reference Radiographs E 192. of Investment Steel Castings for Aerospace Applications.2 Reference radiographs for steel castings 2 to 4 ½ in. (51 to 114mm) in thickness are contained in ASTM Reference Radiographs E186, for Heavy Walled (2 to 4 ½ in.) Steel Castings.2

Two sets of reference radiographs are provided herein. One set, made with 220 k V X rays, is intended for the evaluation of radiographs made with relatively low energy radiation, (X rays up to 400 k V and iridium-192). The second set, made with a radium source, is applicable to radiographs made with high energy radiation (1 and 2 MeV X rays, betatron X rays and cobalt-60 gamma rays). In each of these two sets, there are 31 radiographs which illustrate 7 different types of discontinuties of various severity grades or classes as in Table 1.

NOTE 2-The values stated in U.S. customary units are to be regarded as the standard.

2 Annual Book of ASTM Standards, Part 31.