Reference radiographs for tin bronze and related alloy castings are intended to be used as a guide to the recognition of common discontinuities and their differentiation both as to type and severity level. Discontinuity types most common to these alloys are illustrated. For reference, descriptions of typical casting defects and corresponding radiographic indication types are contained in Section 5. Purchasers and suppliers may, by mutual agreement, select particular discontinuity categories (see 1.2) to serve as standards representing minimum levels of acceptability (see Sections 7 and 8).

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. Section 10 addresses purchaser supplier requisites where weld repairs may be required.

Procedures for evaluation of production radiographs using applicable reference radiographs of this standard are prescribed in Section 9; 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 called-out in the purchaser supplier agreement or contractual document.

The following ASTM specifications illustrate alloys covered by these standards; however, it is intended that these reference radiographs also apply to related government and commercial material specifications:

1. Scope

2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

ASTM Standards

B61 Specification for Steam or Valve Bronze Castings

B62 Specification for Composition Bronze or Ounce Metal Castings

B271 Specification for Copper-Base Alloy Centrifugal Castings

B584 Specification for Copper Alloy Sand Castings for General Applications

E94 Guide for Radiographic Examination

E242 Reference Radiographs for Appearances of Radiographic Images as Certain Parameters are Changed

E1316 Terminology for Nondestructive Examinations

Keywords

brass; casting discontinuities; copper; gamma ray; reference radiographs; tin bronze; valve bronze; X-ray; Bronze castings--specifications; Castings; Copper alloy castings; Diffraction mottling; Reference radiographs; Tin metals/alloys;

ICS Code

ICS Number Code 77.040.20 (Non-destructive testing of metals); 77.150.60 (Lead, zinc and tin products)

Citing ASTM Standards

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