ASTM-A892 Standard Guide for Defining and Rating the Microstructure of High Carbon Bearing Steels

ASTM-A892 - 2009 R14(E1) EDITION - CURRENT
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This guide covers the definition and rating of the microstructure of carbide structures in annealed high carbon bearing steels. Requirements for the optical metallograph apparatus and specimen preparation including polishing and etching are detailed. The description of the reference photomicrographs (graded illustrations of annealed carbides categorized by size, network, and lamellar content (shape)) that shall be used in the evaluation and the equation that shall define the rating are given.

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Scope

1.1 This guide covers the description of carbide structures in annealed high carbon bearing steels.

1.2 Included is a guide for rating steel specimens by a graded series of photomicrographs showing the incidence of certain conditions.

1.3 The reference photomicrographs are graded illustrations of annealed carbides categorized by size, network, and lamellar content (shape).

1.4 This guide is to facilitate communication and description of microstructure. It does not establish limits of acceptability. Such limits are a matter of agreement between user and producer.

1.5 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

1.6 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 appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.

Keywords

antifriction bearings; bearing steel; chromium alloy steel; metallography; ICS Number Code 77.140.20 (Steels of high quality)

To find similar documents by ASTM Volume:

01.05 (Steel--Bars, Forgings, Bearing, Chain, Tool)

To find similar documents by classification:

77.140.20 (Stainless steels Including alloyed steels, corrosion-resistant steels, heat-resisting steels, etc.)

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Document Number

ASTM-A892-09(2014)e1

Revision Level

2009 R14(E1) EDITION

Status

Current

Modification Type

Editorially changed

Publication Date

Oct. 15, 2014

Document Type

Guide

Page Count

2 pages

Committee Number

A01.28