ASTM E562-19e1 is the current international standard for determining the volume fraction of identifiable phases or constituents in a material's microstructure using the systematic manual point count method. This 2019 edition (with editorial revision 1) provides a rigorous, statistically based framework for metallographers to quantify features like ferrite-to-austenite ratios in stainless steels, martensite content in dual-phase steels, and porosity in additive manufacturing. 1. Fundamental Methodology
The Process: A technician counts the number of grid points that fall within the phase of interest (e.g., ferrite in duplex stainless steel or porosity in a casting). astm e562-19e1
Duplex Stainless Steels: Researchers often use this standard to verify the 50/50 balance between austenite and ferrite, which is essential for preventing stress corrosion cracking in marine environments. ASTM E562-19e1 is the current international standard for
ASTM E562-19e1 is the industry-standard test method for determining the volume fraction Fundamental Methodology The Process: A technician counts the