ASTM E186-10
Standard Reference Radiographs for Heavy-Walled (2 to 4&x00BD;-in. (50.8 to 114-mm)) Steel Castings

Standard No.

ASTM E186-10

Release Date

2010

Published By

American Society for Testing and Materials (ASTM)

Status

Be replaced

Replace By

ASTM E186-15

Latest

ASTM E186-20

Scope

Graded reference radiographs are intended to provide a guide enabling recognition of specific casting discontinuity types and relative severity levels that may be encountered during typical fabrication processes. Reference radiographs containing ungraded discontinuities are provided as a guide for recognition of a specific casting discontinuity type where severity levels may not be needed. These reference radiographs are intended as a basis from which manufacturers and purchasers may, by mutual agreement, select particular discontinuity classes to serve as standards representing minimum levels of acceptability (see Sections 6 and 7).

Reference radiographs represented by this standard may be used, as agreed upon in a purchaser supplier agreement, for energy levels, thicknesses or both outside the range of this standard when determined applicable for the casting service application. Severity levels of similar discontinuity categories and energy level range of E446 or E280 reference radiographs may alternatively be used, as determined appropriate for the casting service application, if so agreed upon in a purchaser supplier agreement (see Section 1 and 5.1).

Procedures for evaluation of production radiographs using applicable reference radiographs of this standard are prescribed in Section 8; however, there may be manufacturing-purchaser issues involving specific casting service applications where it may be appropriate to modify or alter such requirements. Where such modifications may be appropriate for the casting application, all such changes shall be specifically called-out in the purchaser supplier agreement or contractual document. Section 9 addresses purchaser supplier requisites where weld repairs to castings may be required.

1.1 These reference radiographs illustrate various categories, types and severity levels of discontinuities occurring in steel castings that have section thicknesses of 2 to less than 4½ in. (50.8 to 114 mm). The reference radiograph films are an adjunct to this document and must be purchased separately from ASTM International, if needed (see 2.2). Categories and severity levels for each discontinuity type represented by these reference radiographs are described in 1.2.1. Note that 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 4, 6, and 7 of this standard. Reference radiographs for other steel casting thicknesses may be found in Reference Radiograph standards E446 and E280. Reference Radiograph standards E446 and E280 provide some overlap of severity levels for similar discontinuity categories within the same energy level range (see 4.2, 5.1, and 6.3)

1.2 These reference radiographs consist of three separate volumes as follows:

1.2.1 Volume I: 1–MV X Rays and Iridium 192 (called “1 to 2–Mev X rays” in previous editions)-Set of 28 plates (nominal 5 by 8 in. (127 by 203 mm) in a 15 by 17 in. (381 by 432 mm) ring binder).

1.2.2 Volume II: 2–MV X Rays and Cobalt-60 (called

ASTM E186-10 Referenced Document

• ASTM E1316 Standard Terminology for Nondestructive Examinations
• ASTM E242 Standard Reference Radiographs for Appearances of Radiographic Images as Certain Parameters Are Changed
• ASTM E280 Standard Reference Radiographs for Heavy-Walled (4 &189; to 12-in. [114 to 305-mm]) Steel Castings
• ASTM E446 Standard Reference Radiographs for Steel Castings Up to 2 in. [51 mm] in Thickness
• ASTM E94 Standard Guide for Radiographic Examination

ASTM E186-10 history

• 2020 ASTM E186-20 Standard Reference Radiographs for Heavy-Walled (2 to 412 in. (50.8 to 114 mm)) Steel Castings
• 2019 ASTM E186-15(2019)e1 Standard Reference Radiographs for Heavy-Walled (2 to 412 in. (50.8 to 114 mm)) Steel Castings
• 2015 ASTM E186-15 Standard Reference Radiographs for Heavy-Walled (2 to 412 in. (50.8 to 114 mm)) Steel Castings
• 2010 ASTM E186-10 Standard Reference Radiographs for Heavy-Walled (2 to 4&x00BD;-in. (50.8 to 114-mm)) Steel Castings
• 1998 ASTM E186-98(2004)e1 Standard Reference Radiographs for Heavy-Walled (2 to 4 &189; in. [51 to 114-mm]) Steel Castings
• 1998 ASTM E186-98 Standard Reference Radiographs for Heavy-Walled (2 to 4 1/2-in. (51 to 114-mm)) Steel Castings