ASTM E2818-11(2019)
Standard Practice for Determination of Quasistatic Fracture Toughness of Welds

Standard No.

ASTM E2818-11(2019)

Release Date

2019

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM E2818-11(2019)

Scope

1.1 This practice provides methods for preparing specimens from welds in metallic materials and interpreting subsequent test results when used in conjunction with standards Test Methods E1290 and E1820 for the determination of fracture toughness. The fatigue pre-cracking procedures included in this practice may also be used to aid in preparing straight pre-cracks for weld specimens in accordance with Test Method E1681. 1.2 This practice draws heavily from ISO 15653: Metallic materials – Method of test for the determination of quasistatic fracture toughness of welds. All references to ISO 12135 in that test method should be replaced with the applicable ASTM Test Methods (E1820, E1290 or E1681). 1.3 The recommended specimen is a single-edge bend [SE(B)] with width, W, equal to twice the specimen thickness, B. An alternate SE(B) specimen with W/B equal to one and a span, S, to W ratio of 4 may be used but may produce different toughness values. A compact tension [C(T)] specimen may be used if it can be demonstrated that the analysis of results properly accounts for weld-to-base metal strength mismatch effects on fracture toughness. 1.4 The recommended limitation on weld-to-base metal yield strength ratio is 0.5, σys weld σys base,1.5 (1) Undermatching within this limitation leads to conservative estimates of fracture toughness, while overmatching may lead to an overestimation of the fracture toughness by up to 10%. 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.

ASTM E2818-11(2019) Referenced Document

• ASTM E1290 Standard Test Method for Crack-Tip Opening Displacement (CTOD) Fracture Toughness Measurement
• ASTM E1681 Standard Test Method for Determining a Threshold Stress Intensity Factor for Environment-Assisted Cracking of Metallic Materials
• ASTM E1820 Standard Test Method for Measurement of Fracture Toughness
• ASTM E1823 Standard Terminology Relating to Fatigue and Fracture Testing
• ASTM E8/E8M Standard Test Methods for Tension Testing of Metallic Materials*， 2024-01-01 Update
• ISO 12135 Metallic materials - Unified method of test for the determination of quasistatic fracture toughness*， 2021-06-30 Update
• ISO 15653 Metallic materials — Method of test for the determination of quasistatic fracture toughness of welds

ASTM E2818-11(2019) history

• 2019 ASTM E2818-11(2019) Standard Practice for Determination of Quasistatic Fracture Toughness of Welds
• 2011 ASTM E2818-11 Standard Practice for Determination of Quasistatic Fracture Toughness of Welds