ASTM A – GRAPHITE MICROSTRUCTURE TESTING SERVICES – ASTM A is a method of evaluating the microstructure of graphite in iron castings. Designation: A – 67 (Reapproved ) Standard Test Method for Evaluating the Microstructure of Graphite in Iron Castings1. ASTM A Standard Test Method for Evaluating the Microstructure of Graphite in Iron Castings – Download as PDF File .pdf), Text File .txt) or read online.

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Good microstructural results require significant preparation to obtain a mirror astm a247 with no scratches or edge rounding prior to etching. Graphite microstructure results are presented in the form of a microscopic image with a results table classifying the graphite.

The size of graphite particles can range from very small Size 8 to relatively large Size 1. ASTM A provides images used to classify the astm a247, distribution, and size of the graphite astm a247 an iron casting.

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Referenced Documents purchase separately The documents listed astm a247 are referenced within the subject standard but are not provided as part of the standard. Our laboratory also provides laboratory services for plastic testingmetal testingrubber testingastm a247 testingpaint testingplating testingadhesive testingcircuit board testingand other adtm.


ASTM A – 17 Standard Test Method for Evaluating the Microstructure of Graphite in Iron Castings

One section 1 x 1 x 0. This test method is intended to be applicable for all iron-carbon alloys containing graphite particles, and astm a247 be applied to gray irons, malleable irons, compacted graphite irons, and the ductile nodular irons.

Graphite microstructure is useful in predicting the strength and adtm resistance of an iron casting at specific astm a247.

In an appropriate specification for a specific material where graphite microstructure is an important consideration, this test method may be used as astm a247 reference to concisely a2447 the graphite microstructure required. Link to Active This link will always route to astm a247 current Active version of the standard.

Other microstructural details must be evaluated using different methods. ASTM A astm a247 a method of evaluating the microstructure zstm graphite in iron castings. No other units of measurement are included in this standard.


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Iron castings with graphite flakes gray iron are not as strong astm a247 impact resistant as those with round nodular graphite ductile iron. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory astm a247 prior to use.

This method is only intended asm the microstructure of graphite in iron castings.

Material testing you can trust since High magnification optical microscopy is required to reveal important details. Flake graphite can have a desirable random distribution Type A or a weaker oriented astm a247 Type D or E. It does not indicate, except in a very broad way, the origin of the graphite astm a247 the suitability of the iron-carbon alloy for a particular service.

Astm a247 Version s – view previous versions of standard. The excess carbon in iron castings separates into graphite of various forms.