ASTM International - ASTM A799/A799M-92(1997)

Standard Practice for Steel Castings, Stainless, Instrument Calibration, for Estimating Ferrite Content

historical
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Organization: ASTM International
Publication Date: 15 December 1992
Status: historical
Page Count: 4
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 inch-pound units or SI units are to be regarded separately as standard. Within the text, the 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.

1.3 This standard does not purport to address all of the safety problems, 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.

Document History

November 1, 2015
Standard Practice for Steel Castings, Stainless, Instrument Calibration, for Estimating Ferrite Content
4.1 The amount of ferrite present in an austenitic stainless steel has been shown to influence the strength, toughness and corrosion resistance of this type of cast alloy. The amount of ferrite...
April 1, 2010
Standard Practice for Steel Castings, Stainless, Instrument Calibration, for Estimating Ferrite Content
The amount of ferrite present in an austenitic stainless steel has been shown to influence the strength, toughness and corrosion resistance of this type of cast alloy. The amount of ferrite present...
October 1, 2009
Standard Practice for Steel Castings, Stainless, Instrument Calibration, for Estimating Ferrite Content
The amount of ferrite present in an austenitic stainless steel has been shown to influence the strength, toughness and corrosion resistance of this type of cast alloy. The amount of ferrite present...
March 1, 2004
Standard Practice for Steel Castings, Stainless, Instrument Calibration, for Estimating Ferrite Content
The amount of ferrite present in an austenitic stainless steel has been shown to influence the strength, toughness and corrosion resistance of this type of cast alloy. The amount of ferrite present...
ASTM A799/A799M-92(1997)
December 15, 1992
Standard Practice for Steel Castings, Stainless, Instrument Calibration, for Estimating Ferrite Content
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...
December 15, 1992
Standard Practice for Steel Castings, Stainless, Instrument Calibration, for Estimating Ferrite Content
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...
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