The use of flattened specimens to measure the Charpy V-notch impact properties of thin-wall pipe

Technical Report · Fri Dec 01 00:00:00 EST 1989

OSTI ID:6893336

Williams, D N

API Specification 5L, Supplemental Requirement SR5, 37th Edition, requires that Charpy V-notch (CVN) impact properties of pipe from which full size (0.394 {times} 0.394 inch) transverse specimens cannot be obtained, because of wall-thickness/pipe-diameter limitations, be measured with unflattened 2/3 size (0.263 {times} 0.394 inch) or 1/2-size (0.195 {times} 0.394) transverse specimens. Since the use of subsize specimens is known to introduce significant problems in measuring transition temperature interest has been expressed in the possibility of measuring CVN impact properties with flattened specimens to maximize specimen thickness, i.e., use full wall thickness, when subsize specimens are necessary. The present study was undertaken to examine the merit of this approach.

• Research Organization: Battelle, Columbus, OH (USA)
• Sponsoring Organization: AGA
• OSTI ID: 6893336
• Report Number(s): NG-18-182
• Country of Publication: United States
• Language: English

Related Subjects

03 NATURAL GAS
36 MATERIALS SCIENCE
42 ENGINEERING
CHARPY TEST
PIPES
FRACTURE PROPERTIES
STEELS
TENSILE PROPERTIES
PIPELINES
THICKNESS
ALLOYS
DESTRUCTIVE TESTING
DIMENSIONS
IMPACT TESTS
IRON ALLOYS
IRON BASE ALLOYS
MATERIALS TESTING
MECHANICAL PROPERTIES
MECHANICAL TESTS
TESTING
032000* - Natural Gas- Transport
Handling
& Storage
360103 - Metals & Alloys- Mechanical Properties
420500 - Engineering- Materials Testing