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1.1 This test method covers the determination of fracture propagation toughness in terms of the steady-state crack-tip-opening angle (CTOA) using the drop-weight tear test (DWTT)-type specimen. The method is applicable to ferritic steels that exhibit predominantly ductile fracture with at least 85 % shear area measured according to Test Method - Standard Test Method for Drop-Weight Tear Tests of Ferritic Steels. This test method applies to ferritic steels with thicknesses between 6 mm and 20 mm. describes the method to test ferritic steels with thicknesses between 20 mm to 32 mm.
1.2 In terms of apparatus, specimen design, and test methodology, this test method draws from Test Method and API 5L3 - Recommended Practice for Conducting Drop-Weight Tear Tests on Line Pipe.
1.3 The development of this test method has been driven by the need to design for fast ductile fracture arrest of axial running cracks in steel high-pressure gas pipelines (. )The purpose has been to develop a test to characterize fracture propagation resistance in a form suitable for use as a pipe mill test (. The traditional Charpy test has been shown to be inadequate for modern high toughness pipe steels )(. This test method measures fracture propagation resistance in terms of crack-tip opening angle, and is used to characterize ferritic steels. )
1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.5 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use.
1.6 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
ISO StandardsISO 14456 ISO 22889
E177 Practice for Use of the Terms Precision and Bias in ASTM Test Methods
E436 Test Method for Drop-Weight Tear Tests of Ferritic Steels
E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
E1823 Terminology Relating to Fatigue and Fracture Testing
E1942 Guide for Evaluating Data Acquisition Systems Used in Cyclic Fatigue and Fracture Mechanics Testing
E2298 Test Method for Instrumented Impact Testing of Metallic Materials
E2472 Test Method for Determination of Resistance to Stable Crack Extension under Low-Constraint Conditions
API Recommended PracticeAPI Recommended Practice 5L3 Drop-Weight Tear Tests on Line Pipe
ICS Number Code 77.080.20 (Steels)
UNSPSC Code 11101704(Steel)
|Link to Active (This link will always route to the current Active version of the standard.)|
ASTM E3039-20, Standard Test Method for Determination of Crack-Tip-Opening Angle of Ferritic Steels Using DWTT-Type Specimens, ASTM International, West Conshohocken, PA, 2020, www.astm.orgBack to Top