ASTM A968 / A968M - 96(2014)

    Standard Specification for Chromium, Chromium-Nickel, and Silicon Alloy Steel Bars and Shapes for Corrosion and Heat-Resisting Service

    Active Standard ASTM A968 / A968M | Developed by Subcommittee: A01.17

    Book of Standards Volume: 01.03


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    Abstract

    This specification covers hot- and cold-finished alloy steel bars including rounds, squares, hexagons, and hot-rolled or extruded shapes for use in corrosion and heat-resisting service. The steel specimens shall be furnished in the solution annealed condition with subsequent light drawing and straightening permitted. The steel materials shall conform to the required chemical compositions of carbon, manganese, phosphorus, sulfur, silicon, nickel, chromium, and molybdenum. Mechanical tests shall be performed wherein the materials shall conform to the required values of tensile strength, yield strength, elongation, and hardness.

    This abstract is a brief summary of the referenced standard. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application. ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date.

    1. Scope

    1.1 This specification covers hot- and cold-finished alloy steel bars having a chromium content equal to or less than 11.0 % including rounds, squares, hexagons, and hot-rolled or extruded shapes for use in corrosion and heat-resisting service.

    1.2 Some steels covered by this specification, especially the high silicon-containing steels, because of their particular alloy content and specialized properties, may require special care in their fabrication and welding. Specific procedures are of fundamental importance, and it is presupposed that all parameters will be in accordance with approved test methods capable of producing the desired properties in the finished fabrication.

    1.3 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.

    1.4 This specification and the applicable material specifications are 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.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    SAE Standard

    SAEJ 1086 Recommended Practice for Numbering Metals and Alloys Available from Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale, PA 15096.

    ASTM Standards

    A484/A484M Specification for General Requirements for Stainless Steel Bars, Billets, and Forgings

    A751 Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products

    E527 Practice for Numbering Metals and Alloys in the Unified Numbering System (UNS)


    ICS Code

    ICS Number Code 77.120.01 (Non-ferrous metals in general)

    UNSPSC Code

    UNSPSC Code 30263700(Steel alloy bars)


    DOI: 10.1520/A0968_A0968M

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