BS EN ISO 2626:1995 Copper. Hydrogen embrittlement test
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SCOPE AND FIELD OF APPLICATION
This International Standard specifies the procedure for the hydrogen embrittlement testing of deoxidized and oxygen free high conductivity coppers.
REFERENCES
ISO/R 398, Bend test for copper and copper alloys.
ISO 2625, Copper and copper alloys of wire.
PRINCIPLE
Preparation of a test piece and heating in an atmosphere containing hydrogen. If oxygen is present in the metal, reaction occurs which causes embrittlement. Cooling of the test piece out of contact with air.
TEST PIECES
Embrittlement is then revealed by close bending ar reverse
bending, or by microscopic examination.
Close-bend test piece
This shall be of a convenient length and either of the full section or of a convenient thickness or diameter not greater than 12 mm (0.5 in). Any edges shall be rounded and smoothed. Test pieces not of the full section shall contain some part of the original surface of the material.
Reverse bend test piece
This shall be of convenient length, with a thickness or diameter not exceeding 2,5 mm (0.1 in). Any edges shall be rounded and smoothed. Test pieces not of the full section shall contain some part of the original surface of the material.
