ASTM A800/A800M-20
Standard Practice for Estimating Ferrite Content of Stainless Steel Castings Containing Both Ferrite and Austenite

Standard No.

ASTM A800/A800M-20

Release Date

2020

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM A800/A800M-20

Scope

1.1 This practice covers procedures and definitions for estimating ferrite content in stainless steel alloys containing both austenite and ferrite phases in amounts controlled to be within specified limits. Methods are described for estimating ferrite content by chemical, magnetic, and metallographic means. NOTE 1—This practice can be used for cast austenitic and duplex stainless steel alloys (for example, CF-3, CF-3A, CF-8, CF-8A, CF-3M, CF-3MA, CF-8M, CF-8C, CG-8M, CH-10, CD4MCuN (1B), CD3MCuN (1C), CE8MN (2A), CD6MN (3A), CD3MN (4A), CE3MN (5A), CD3MWCuN (6A), and CD3MWN (7A)). 1.2 The values stated in either inch-pound units or SI units are to be regarded separately as standard. 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 practice. 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 A800/A800M-20 Referenced Document

• ASTM A1067/A1067M Standard Specification for Test Coupons for Steel Castings*， 2024-04-22 Update
• ASTM A351/A351M Standard Specification for Castings, Austenitic, Austenitic- Ferritic (Duplex), for Pressure-Containing Parts
• ASTM A751 Standard Test Methods, Practices, and Terminology for Chemical Analysis of Steel Products
• ASTM A799/A799M Standard Practice for Steel Castings, Stainless, Instrument Calibration, for Estimating Ferrite Content
• ASTM A941 Standard Terminology Relating to Steel, Stainless Steel, Related Alloys, and Ferroalloys*， 2024-03-01 Update
• ASTM E353 Standard Test Methods for Chemical Analysis of Stainless, Heat-Resisting, Maraging, and Other Similar Chromium-Nickel-Iron Alloys
• ASTM E562 Standard Test Method for Determining Volume Fraction by Systematic Manual Point Count

ASTM A800/A800M-20 history

• 2020 ASTM A800/A800M-20 Standard Practice for Estimating Ferrite Content of Stainless Steel Castings Containing Both Ferrite and Austenite
• 2014 ASTM A800/A800M-14 Standard Practice for Steel Casting, Austenitic Alloy, Estimating Ferrite Content Thereof
• 2010 ASTM A800/A800M-10 Standard Practice for Steel Casting, Austenitic Alloy, Estimating Ferrite Content Thereof
• 2001 ASTM A800/A800M-01(2006) Standard Practice for Steel Casting, Austenitic Alloy, Estimating Ferrite Content Thereof
• 2001 ASTM A800/A800M-01 Standard Practice for Steel Casting, Austenitic Alloy, Estimating Ferrite Content Thereof
• 1991 ASTM A800/A800M-91(1997)e1 Standard Practice for Steel Casting, Austenitic Alloy, Estimating Ferrite Content Thereof