ASME SA 240 pdf download

ASME SA 240 pdf download

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 Documents2.1 ASTM Standards:
A370 Test Methods and Definitions for Mechanical Testingof Steel Products
A480/A48OM Specification for General Requirements forFlat-Rolled Stainless and Heat-Resisting Steel Plate,Sheet,and Strip
A923 Test Methods for Detecting Detrimental IntermetallicPhase in Duplex Austenitic/Ferritic Stainless Steels
E112 Test Methods for Determining Average Grain SizeE140 Hardness Conversion Tables for Metals RelationshipAmong Brinell Hardness,Vickers Hardness,RockwellHardness,Superficial Hardness, Knoop Hardness,Sclero-scope Hardness,and Leeb Hardness
E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)
2.2SAE Standard:
J1086 Practice for Numbering Metals and Alloys (UNS)3. General Requirements
3.1 The following requirements for orders for materialfurnished under this specification shall conform to the appli-cable requirements of the current edition of SpecificationA480/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;
3.1.7 Dimensions and permissible variations;
3.1.8 Workmanship, finish and appearance;
3.1.9 Number of tests/test methods;
3.1.10 Specimen preparation;
3.1.11 Retreatment;
3.1.12 Inspection;
3.1.13 Rejection and rehearing;
3.1.14 Material test report;
3.1.15 Certification; and
3.1.16 Packaging, marking, and loading.
4. Chemical Composition
4.1 The steel shall conform to the requirements as to chemical composition specified in Table 1 and shall conform to applicable requirements specified in Specification A480/A480M.
5. Mechanical Properties
5.1 The material shall conform to the mechanical properties specified in Table 2.
5.2 When specified by the purchaser, Charpy impact tests shall be performed in accordance with Supplementary Require- ment S1.
5.3 When specified by the purchaser, 1 % offset yield strength shall be measured and reported in accordance with Supplementary Requirement S3.
6. Materials for High-Temperature Service 6.1 The austenitic H Types shall conform to an average grain size of ASTM No. 7 or coarser as measured by Test Methods E112.
6.2 Supplementary Requirement S2 shall be invoked when non-H grade austenitic stainless steels are ordered for ASME Code applications for service above 1000°F [540°C].
6.3 Grade S31060, unless otherwise specified in the pur- chase order, shall conform to an average grain size of ASTM No. 7 or coarser, as measured by Test Methods E112.
7. Keywords
7.1 architectural; building; chromium; chromium-nickel stainless steel; chromium-manganese-nickel stainless steel; construction; pressure vessels

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