ASTM-A799/A799M 2020
$29.79
A799/A799M-10(2020) Standard Practice for Steel Castings, Stainless, Instrument Calibration, for Estimating Ferrite Content
| Published By | Publication Date | Number of Pages |
| ASTM | 2020 | 4 |
ASTM A799/A799M-10-Reapproved2020
Active Standard: Standard Practice for Steel Castings, Stainless, Instrument Calibration, for Estimating Ferrite Content
ASTM A799/A799M
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.
Keywords
calibration; ferrite; stainless steel castings;
ICS Code
ICS Number Code 77.140.80 (Iron and steel castings)
DOI: 10.1520/A0799_A0799M-10R20
