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ASTM A297/A297M-21a

Current Revision

Standard Specification for Steel Castings, Iron-Chromium and Iron-Chromium-Nickel, Heat Resistant, for General Application

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1.1 This specification covers iron-chromium and iron-chromium-nickel alloy castings for heat-resistant service. The grades covered by this specification are general purpose alloys and no attempt has been made to include heat-resisting alloys used for special production application.

Note 1: For heat-resisting alloys used for special product application, reference should be made to Specifications A351/A351M, A217/A217M, and A447/A447M.

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 nonconformance with the standard.

1.3 This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee.


This specification covers standards for iron-chromium and iron-chromium-nickel alloy castings of general purpose grades (Grades HF, HH, HI, HK, HE, HT, HU, HW, HX, HC, HD, HL, HN, and HN) applicable in heat-resistant services. Alloys shall be produced through electric arc, electric-induction, or other approved processes. Heat-treatment shall be conducted when agreed upon by the manufacturer and purchaser. The material shall conform to carbon, manganese, silicon, phosphorus, sulfur, chromium, nickel, and molybdenum contents. Tensile requirements including tensile strength, yield point, and elongation shall apply when specified in the purchase order. Guidelines for repair by welding are also given.


SDO ASTM: ASTM International
Document Number A297
Publication Date Sept. 1, 2021
Language en - English
Page Count 4
Revision Level 21a
Supercedes
Committee A01.18
Publish Date Document Id Type View
Sept. 1, 2021 A0297_A0297M-21A Revision
May 1, 2021 A0297_A0297M-21 Revision
July 1, 2020 A0297_A0297M-20 Revision
Sept. 1, 2019 A0297_A0297M-19 Revision
May 1, 2017 A0297_A0297M-17 Revision
May 1, 2014 A0297_A0297M-14 Revision
May 1, 2010 A0297_A0297M-10 Revision
Nov. 1, 2008 A0297_A0297M-08A Revision
May 6, 2008 A0297_A0297M-08 Revision
Jan. 10, 2003 A0297_A0297M-97R03 Reaffirmation
May 10, 1998 A0297_A0297M-97R98 Reaffirmation