Significance and Use
This test method can be used to determine the appearance of propagating fractures in plain carbon or low-alloy pipe steels (yield strengths less than 825 MPa) over the temperature range where the fracture mode changes from brittle (cleavage or flat) to ductile (shear or oblique).
This test method can serve the following purposes:
For research and development, to study the effect of metallurgical variables such as composition or heat treatment, or of fabricating operations such as welding or forming on the mode of fracture propagation.
For evaluation of materials for service to indicate the suitability of a material for specific applications by indicating fracture propagation behavior at the service temperature(s).
For information or specification purposes, to provide a manufacturing quality control only when suitable correlations have been established with service behavior.
1.1 This test method covers drop-weight tear tests (DWTT) on ferritic steels with thicknesses between 3.18 and 19.1 mm.
1.2 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.
1.3 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.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E208 Test Method for Conducting Drop-Weight Test to Determine Nil-Ductility Transition Temperature of Ferritic Steels
E1823 Terminology Relating to Fatigue and Fracture Testing
brittle fracture; drop-weight tear test; ferritic steels; fracture appearance; impact loading; percent shear area; Carbon steel; Drop tests--ferritic steels; Ferritic stainless steel; Fracture testing--metals/alloys; Shear testing ;
ICS Number Code 77.040.10 (Mechanical testing of metals)
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Citing ASTM Standards
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