ASME SA240:2021 pdf free download

ASME SA240:2021 pdf free download.Standard Specification for Chromium and Chromium-Nickel Stainless Steel Plate,Sheet,and Strip for Pressure Vessels and for General Applications.
Charpy Impact Testing of Plate
Charpy impact tests shall be conducted in accordance with Test Methods and Definitions A370.
S 1 .2 Number of Tests—One impact test (three specimens) shall he made from one plate per heat treatment lot in the final heat treated condition.
S 1 .3 Orientation of Test Specimens—Unless specified as transverse specimens (long axis of the specimen transverse to the final rolling direction, root of the notch perpendicular to the rolling face) on the purchase order, the orientation of the specimens shall be longitudinal (long axis of the specimen parallel to the final rolling direction, root of the notch perpendicular to the rolling face). The manufacturer is permitted to test transverse specimens provided that such tests meet the acceptance criteria applicable to longitudinal specimens. Unless otherwise specified on the purchase order, the specimens shall he taken so as to include the mid-thickness of the product.
S1.4 Test Temperature—The purchaser shall specify the test temperature. The manufacturer is permitted to test spedmens at a temperature lower than that specified by the purchaser. provided that such tests shall meet the acceptance criteria applicable to specimens tested at the specified temperature (see the note below).
NorE S 1.1—Test Methods A923, Method B. applicable to some duplex (austenitic-ferritic) stainless steels as listed in Test Methods A923, uses a Charpy impact test for the purpose of determining [he absence of detrimental intermetallic phases. Method B specifies a test temperature and acceptance criterion, expressed as Impact energy, for each type of steel covered. It may be economical for the Charpy impact tests performed on duplex stainless steels covered in both Specification A240 and Test Methods A923 to be performed at the lower of the temperatures specified by this supplementary requirement and Test Methods A923 Method B. with measurement of both lateral expansion and impact energy.