ASTM A799/A799M-10(2020)
Standard Practice for Steel Castings, Stainless, Instrument Calibration, for Estimating Ferrite Content

Standard No.

ASTM A799/A799M-10(2020)

Release Date

2020

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM A799/A799M-10(2020)

Scope

1.1 This practice covers the procedure for calibration of instruments to be used for estimating the ferrite content of the microstructure of cast stainless steels by magnetic response or measurement of permeability. This procedure covers both primary and secondary instruments. 1.1.1 A primary instrument is one that has been calibrated using National Institute of Standards and Technology-Standard Reference Material (NIST-SRM) thickness coating standards. It is a laboratory tool to be used with test specimens. Some primary instruments may be used to directly measure the ferrite content of castings. 1.1.2 A secondary instrument is one that has been calibrated by the use of secondary standards that have been measured by a calibrated primary instrument. Secondary instruments are to be used to directly measure the ferrite content of castings. 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. 1.2.1 Within the text, the SI units are shown in brackets. 1.3 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.4 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.

ASTM A799/A799M-10(2020) Referenced Document

• ASTM A941 Standard Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys*， 2024-03-01 Update
• ASTM B499 Standard Test Method for Measurement of Coating Thicknesses by the Magnetic Method: Nonmagnetic Coatings on Magnetic Basis Metals
• ASTM E562 Standard Test Method for Determining Volume Fraction by Systematic Manual Point Count

ASTM A799/A799M-10(2020) history

• 2020 ASTM A799/A799M-10(2020) Standard Practice for Steel Castings, Stainless, Instrument Calibration, for Estimating Ferrite Content
• 2010 ASTM A799/A799M-10(2015) Standard Practice for Steel Castings, Stainless, Instrument Calibration, for Estimating Ferrite Content
• 2010 ASTM A799/A799M-10 Standard Practice for Steel Castings, Stainless, Instrument Calibration, for Estimating Ferrite Content
• 2004 ASTM A799/A799M-04(2009) Standard Practice for Steel Castings, Stainless, Instrument Calibration, for Estimating Ferrite Content
• 2004 ASTM A799/A799M-04 Standard Practice for Steel Castings, Stainless, Instrument Calibration, for Estimating Ferrite Content
• 1992 ASTM A799/A799M-92(2002) Standard Practice for Steel Castings, Stainless, Instrument Calibration, for Estimating Ferrite Content
• 1992 ASTM A799/A799M-92(1997) Standard Practice for Steel Castings, Stainless, Instrument Calibration, for Estimating Ferrite Content