ASTM A746 Specification for Ductile Iron Gravity Sewer Pipe
When conducting acceptance tensile testing of ductile iron(as specified by ASTM A746), it is necessary to test machined specimens. This specimen is known as a shouldered-end specimen. Sometimes referred to as a "dumbbell", "dogbone" or "button-end specimen", this round specimen type has shouldered ends that are used for gripping the specimen during testing.
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ASTM A746 Specification for Ductile Iron Gravity Sewer Pipe
ASTM A746 Specification for Ductile Iron Gravity Sewer Pipe
When conducting acceptance tensile testing of ductile iron(as specified by ASTM A746), it is necessary to test machined specimens. This specimen is known as a shouldered-end specimen. Sometimes referred to as a "dumbbell", "dogbone" or "button-end specimen", this round specimen type has shouldered ends that are used for gripping the specimen during testing.
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Modern ASTM A746 tests need to be run at specific stress rates under servo control and require an Extensometer for accurate calculation of 0.2% Offset Yield and Ultimate Tensile Strength.
Today’s customers require automated controls and precise measurements to ensure that their ductile iron pipe product is viable before it gets buried underground. These contemporary needs make older testing techniques, such as manual pacing or drop-of-beam observations, unsuitable.
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