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ASTM E 186 Document Information:
Title
Standard Reference Radiographs for Heavy-Walled (2 to 4 1/2-in. (51 to 114-mm)) Steel Castings
ASTM International
Publication Date:
May 10, 1998
Scope:
These reference radiographs(Footnote 2) for heavy-walled steel
castings are applicable to nominal
section thicknesses of 2 to 4½ in. [51 to 114 mm] and consists
of three separate sets as
follows:
Volume 1: 1-MV X Rays and Iridium 192 (called "1 to 2-Mev X rays" in
previous editions)-Set of 28
plates (5 by 8 in. [127 by 203 mm] in a 15 by 17 in. [381 by 432 mm]
ring binder).
Volume 2: 2-MV X Rays and Cobalt-60 (called "gamma rays" in previous
editions). This includes
cobalt-60 or equivalent isotope radiation and from 2-MV up to 4-MV X
rays- Set of 28 plates (5 by 8
in.) in a 15 by 17 in. ring binder.
Volume 3: 4-MV to 30-MV X rays (called "10 to 24 Mev X rays" in
previous editions)- Set of 28
plates (5 by 8 in.) in a 15 by 17 in. ring binder.
Each set consists of three categories of graded discontinuities in
increasing severity levels, and
three categories of ungraded discontinuities furnished as examples
only, as follows:
Category A - Gas porosity; severity levels 1 through 5.
Category B - Sand and slag inclusions; severity levels 1 through 5.
Category C - Shrinkage; three types:
(1) Type 1 - Severity levels 1 through 5.
(2) Type 2 - Severity levels 1 through 5.
(3) Type 3 - Severity levels 1 through 5.
Category D - Crack; one illustration D3 in pre-1972 documents.
Category E - Hot tear; one illustration in pre-1972 documents.
Category F - Insert; one illustration EB3 in pre-1972 documents.
The values stated in inch-pound units are to be regarded as the
standard.
This standard does not purport to address all of the safety concerns,
if any, associated with its
use. 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.
Footnote 2 - For ASME Boiler and Pressure Vessel Code applications see
related Reference
Radiographs SE 186 in Section V of that Code.
Keywords:
- castings
- discontinuities
- gamma rays
- reference radiographs
- steel
- x-ray
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