2023年2月9日 · 1.1 This test method covers the determination of the nil-ductility transition (NDT) temperature of ferritic steels, 5 / 8 in. (15.9 mm) and thicker. 1.2 This test method may be used …

In all cases only the current version of the standard as published by ASTM is to be considered the official document. This standard is issued under the fixed designation E208; the number immediately following the designation indicates the year of original adoption or, in the case of revision, the year of last revision.

The ASTM E208 drop weight test is used to determine the nil-ductility transition (NDT) temperature of ferritic steels 5/8 inch thick (15.9 mm) and over. The NDT temperature is the temperature at which the fracture mode of steel changes from ductile to brittle.

Originally published as E 208 – 63 T. Last previous edition E 208 – 95. conducted by subjecting each of a series (generally four to eight) of specimens of a given material to a single impact load at a sequence of selected temperatures to determine the maximum temperature at which a specimen breaks.

2020年7月1日 · Standard Test Method for Conducting Drop-Weight Test to Determine Nil-Ductility Transition Temperature of Ferritic Steels. This test method covers the determination of the nil-ductility transition (NDT) temperature of ferritic steels, 5 ⁄ 8 in. (15.9 mm) and thicker.

astm e208-19 October 1, 2019 Standard Test Method for Conducting Drop-Weight Test to Determine Nil-Ductility Transition Temperature of Ferritic Steels

1.1 This test method covers the determination of the nil-ductility transition (NDT) temperature of ferritic steels, 5/8 in. (15.9 mm) and thicker. 1.2 This test method may be used whenever the inquiry, contract, order, or specification states that the steels are subject to fracture toughness requirements as determined by the drop-weight test.