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ASTM International - ASTM E2248-09

Standard Test Method for Impact Testing of Miniaturized Charpy V-Notch Specimens

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Organization: ASTM International
Publication Date: 1 April 2009
Status: inactive
Page Count: 6
ICS Code (Mechanical testing of metals): 77.040.10
significance And Use:

There are cases where it is impractical or impossible to prepare conventional CVN specimens. MCVN specimens are an alternative approach for characterizing notched specimen impact behavior. Typical... View More

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 standard concerns Miniaturized Charpy V-Notch specimens, for which all linear dimensions, including length and notch depth, are reduced with respect to a type A standard impact test specimen in accordance with Test Methods E 23. These are not the same as sub-size specimens, described in Annex A3 of Test Methods E 23, for which length, notch angle and notch depth are the same as for the standard type A Charpy specimen. See also 1.5 below.

1.3 Comparison of the MCVN data with conventional 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 standard does not address testing of sub-size specimens as discussed in Test Methods E 23. 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 conventional Test Methods E 23 specimens.

1.6 The MCVN test may be performed using a typical Test Methods E 23 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 and health practices and determine the applicability of regulatory limitations prior to use.

Document History

June 1, 2018
Standard Test Method for Impact Testing of Miniaturized Charpy V-notch Specimens
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,...
October 1, 2015
Standard Test Method for Impact Testing of Miniaturized Charpy V-Notch Specimens
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,...
April 1, 2013
Standard Test Method for Impact Testing of Miniaturized Charpy V-Notch Specimens
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,...
April 1, 2012
Standard Test Method for Impact Testing of Miniaturized Charpy V-Notch Specimens
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,...
ASTM E2248-09
April 1, 2009
Standard Test Method for Impact Testing of Miniaturized Charpy V-Notch Specimens
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,...
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