ASTM E2248-18
Standard Test Method for Impact Testing of Miniaturized Charpy V-notch Specimens

Standard No.

ASTM E2248-18

Release Date

2018

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM E2248-18

Scope

1.1 This test method describes notched-bar impact testing of metallic materials using Miniaturized Charpy V-notch (MCVN) specimens and test apparatus. It provides: (a) a description of the apparatus, (b) requirements for inspection and calibration, (c) safety precautions, (d) sampling, (e) dimensions and preparation of specimens, (f) testing procedures, and (g) precision and bias. 1.2 This test method concerns Miniaturized Charpy V-notch specimens, for which all linear dimensions, including length and notch depth, are reduced with respect to a standard Charpy V-notch impact test specimen in accordance with Test Methods E23. These are not the same as sub-size specimens, described in Annex A3 of Test Methods E23, for which length, notch angle and notch depth are the same as for the standard Charpy V-notch specimen. See also 1.5 below. 1.3 Comparison of the MCVN data with standard Charpy V-notch (CVN) data or application of the MCVN data, or both, to the evaluation of ferritic material behavior is the responsibility of the user of this test method and is not explicitly covered by this test method. 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 test method does not address testing of sub-size specimens as discussed in Test Methods E23. The reader should understand the distinction between miniature and subsize. Miniature specimens are shorter that sub-size specimens so that more tests can be conducted per unit volume of material. Moreover, miniature specimens are designed so that the stress fields which control fracture are similar to those of standard Test Methods E23 specimens. 1.6 The MCVN test may be performed using a typical Test Methods E23 test machine with suitably modified anvils and striker or using a smaller capacity machine. 1.7 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. 1.8 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 E2248-18 Referenced Document

• ASTM E177 Standard Practice for Use of the Terms Precision and Bias in ASTM Test Methods
• ASTM E2298 Standard Test Method for Instrumented Impact Testing of Metallic Materials
• ASTM E23 Standard Test Methods for Notched Bar Impact Testing of Metallic Materials
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method
• ISO 14556 Metallic materials — Charpy V-notch pendulum impact test — Instrumented test method*， 2023-05-01 Update

ASTM E2248-18 history

• 2018 ASTM E2248-18 Standard Test Method for Impact Testing of Miniaturized Charpy V-notch Specimens
• 2015 ASTM E2248-15 Standard Test Method for Impact Testing of Miniaturized Charpy V-Notch Specimens
• 2013 ASTM E2248-13 Standard Test Method for Impact Testing of Miniaturized Charpy V-Notch Specimens
• 2012 ASTM E2248-12 Standard Test Method for Impact Testing of Miniaturized Charpy V-Notch Specimens
• 2009 ASTM E2248-09 Standard Test Method for Impact Testing of Miniaturized Charpy V-Notch Specimens