: The alignment of microstructural features along a specific directional axis, often caused by hot or cold working.
Marta did. She carried the PDF printed and annotated, the margins full of questions she would ask and places she wanted to see. In the lab, under fluorescent light, she watched a technician slice samples with a ringed coring tool and then seal them in labeled bags. The process felt ritualized, as precise and repetitive as piercings in the rhythm of a machine.
Since ASTM standards are copyrighted, you should obtain the document through official channels to ensure you have the most accurate and legally compliant copy. astm e2109-01 pdf
Harder bands (like martensite or bainite) accelerate cutting tool wear and cause poor surface finishes. Core Methods Defined in the Standard
This more common modern approach uses computerized algorithms and software (such as : The alignment of microstructural features along a
The 2015 version does not invalidate the 2001 edition, but it supersedes it for new testing. If you are auditing a lab or writing a protocol, always check whether the client or regulator demands the 2001 or 2015 edition.
Before purchasing a copy of , ask yourself: In the lab, under fluorescent light, she watched
ASTM E2109-01 (reapproved as E2109-01R21) defines standard methods for quantifying porosity in thermal sprayed coatings through manual comparison (Method A) or automated image analysis (Method B). These procedures are crucial for assessing coating quality, relying on specific metallographic preparation techniques. Purchase the standard from the ASTM International website . E2109 Standard Test Methods for Determining Area ... - ASTM
The percentage of the total cross-sectional area occupied by pores or voids.
USP <51> (“Antimicrobial Effectiveness Testing”) is static, uses specific organisms, and has defined pass/fail criteria for pharmaceutical products. ASTM E2109-01 is , more flexible in organism selection, and does not prescribe pass/fail levels. Choose USP <51> for sterile or ophthalmic drugs; choose ASTM E2109-01 for cosmetic emulsions and rinse-off products.
: The standard describes how to measure the area percentage of porosity through visual comparison or automated tools.