ASME SA 240-2021 pdf download.Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications.
1. Scope 1.1 This specification covers chromium, chromium-nickel, and chromium-manganese-nickel stainless steel plate, sheet, and strip for pressure vessels and for general applications including architectural, building, construction, and aesthetic applications. 1.2 The values stated in either SI units or inch-pound units are to be regarded separately as standard. The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. Combining values from the two systems may result in non-conformance with the standard. 1.3 This specification is expressed in both inch-pound and SI units. However, unless the order specifies the applicable “M” specification designation (SI units), the material shall be furnished in inch-pound units. 1.4 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 appro- priate safety, health, and environmental practices and deter- mine the applicability ofregulatory limitations prior to use. 1.5 This international standard was developed in accor- dance with internationally recognized principles on standard- ization established in the Decision on Principles for the Development of International Standards, Guides and Recom- mendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.
2. Referenced Documents 2.1 ASTM Standards: A370 Test Methods and Definitions for Mechanical Testing of Steel Products A480/A480M Specification for General Requirements for Flat-Rolled Stainless and Heat-Resisting Steel Plate, Sheet, and Strip A923 Test Methods for Detecting Detrimental Intermetallic Phase in Duplex Austenitic/Ferritic Stainless Steels E112 Test Methods for Determining Average Grain Size E140 Hardness Conversion Tables for Metals Relationship Among Brinell Hardness, Vickers Hardness, Rockwell Hardness, Superficial Hardness, Knoop Hardness, Sclero- scope Hardness, and Leeb Hardness E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS) 2.2 SAE Standard: J 1086 Practice for Numbering Metals and Alloys (UNS)
3. General Requirements 3.1 The following requirements for orders for material furnished under this specification shall conform to the appli- cable requirements of the current edition of Specification A480/A480M. 3.1.1 Definitions; 3.1.2 General requirements for delivery; 3.1.3 Ordering information; 3.1.4 Process; 3.1.5 Special tests; 3.1.6 Heat treatment;
S1. Charpy Impact Testing of Plate S1.1 Charpy impact tests shall be conducted in accordance with Test Methods and Definitions A370. S1.2 Number ofTests—One impact test (three specimens) shall be made from one plate per heat treatment lot in the final heat treated condition. S1.3 Orientation of Test Specimens—Unless specified as transverse specimens (long axis of the specimen transverse to the final rolling direction, root ofthe 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 perpen- dicular to the rolling face). The manufacturer is permitted to test transverse specimens provided that such tests meet the acceptance criteria applicable to longitudinal specimens. Un- less otherwise specified on the purchase order, the specimens shall be taken so as to include the mid-thickness ofthe product. S1.4 Test Temperature—The purchaser shall specify the test temperature. The manufacturer is permitted to test speci- mens 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 tempera- ture (see the note below). N OTE S1.1—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 the 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.ASME SA 240 pdf download.