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  • ASTM
    A920/A920M-02a Standard Specification for Steel Bars, Microalloy, Hot-Wrought, Special Quality, Mechanical Properties
    Edition: 2002
    $50.00
    Unlimited Users - 1 Loc per year

Description of ASTM-A920 2002

ASTM A920/A920M-02a

Historical Standard: ASTM A920/A920M-02a Standard Specification for Steel Bars, Microalloy, Hot-Wrought, Special Quality, Mechanical Properties

SUPERSEDED (see Active link, below)




ASTM A920 / A920M

1. Scope

1.1 This specification covers hot-wrought, special quality microalloyed carbon steel bars intended for use in applications where as-rolled mechanical properties are desired. A typical end use is hydraulic cylinder shafts.

1.2 The bars shall be furnished to chemical composition and mechanical properties as provided herein. Chemical composition is based on standard carbon steel grades modified to include microalloying elements such as columbium (niobium), vanadium, or molybdenum. Three strength classes are available, designated 75, 80, and 100, corresponding to the minimum yield strength in ksi.

1.3 Sections and sizes of bar steels available are covered in Specification A 29/A 29M.

1.4 Supplementary Requirements S1 to S5 are provided for use when additional controls or requirements are desired. These shall apply only when specified on the purchase order.

1.5 The values stated in either inch-pound units or SI units are to be regarded separately as standard. Within the text and tables, SI units are shown in brackets. The values stated in each system are not exact equivalents; therefore, each system must be used independently of the other. Combining values from the two systems may result in nonconformance with the specification.

1.6 Unless the order specifies the applicable 'M' specification designation, the material shall be furnished to the 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.

ASTM Standards

A29/A29M Specification for Steel Bars, Carbon and Alloy, Hot-Wrought, General Requirements for

A370 Test Methods and Definitions for Mechanical Testing of Steel Products

A576 Specification for Steel Bars, Carbon, Hot-Wrought, Special Quality

E45 Test Methods for Determining the Inclusion Content of Steel


Keywords

carbon steel bars; microalloyed steel; steel bars; Carbon steel bars/shapes--specifications; Hot wrought steel bars--specifications; Microalloy steel--specifications;


DOI: 10.1520/A0920_A0920M-02A

ASTM International is a member of CrossRef.


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About ASTM

ASTM International, formerly known as the American Society for Testing and Materials (ASTM), is a globally recognized leader in the development and delivery of international voluntary consensus standards. Today, some 12,000 ASTM standards are used around the world to improve product quality, enhance safety, facilitate market access and trade, and build consumer confidence. ASTM’s leadership in international standards development is driven by the contributions of its members: more than 30,000 of the world’s top technical experts and business professionals representing 150 countries. Working in an open and transparent process and using ASTM’s advanced electronic infrastructure, ASTM members deliver the test methods, specifications, guides, and practices that support industries and governments worldwide.