ASTM B 820 Standard Test Method for Bend Test for Determining the Formability of Copper and Copper Alloy Strip
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ASTM B 820 Document Information:
Title
Standard Test Method for Bend Test for Determining the Formability of Copper and Copper Alloy Strip
ASTM International
Publication Date:
May 1, 2004
Scope:
(Footnote *)
This test method describes the technique of bend testing copper and
copper alloy strip samples to
determine product formability or the ability to resist cracking when
forming a bend around a
specific radius. The criterion for failure is the occurrence of cracks
on the outer radius of
curvature (convex).
This bend test is limited to strip from 0.003 to and including 0.031
in. thick. (0.076 to and
including 0.79 mm).
The size of the forming radii used in this test shall be 0.005 to and
including 0.250 in. (0.127 to
and including 6.35 mm).
Units - The values stated in inch-pounds are to be regarded as
standard. The values given in
parentheses are mathematical conversions to SI units that are provided
for information only and are
not considered 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 * - A Summary of Changes section appears at the end of this
standard.
Keywords:
- bend radius
- bend test
- copper and copper alloy strip
- formability test
- fracture
- longitudinal bend
- mandrel
- transverse bend
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