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Significance and Use
The chemical composition of cast iron alloys shall be determined accurately in order to insure the desired metallurgical properties. This procedure is suitable for manufacturing control and inspection testing.
1.1 This test method covers the optical emission spectrometric analysis of cast iron by use of the point-to-plane technique for the following elements in the concentration ranges shown (Note 1):
|Concentration Ranges, %|
|Elements||Applicable Range, %||Quantitative Range, %A|
|Carbon||1.9 to 3.8||1.90 to 3.8|
|Chromium||0 to 2.0||0.025 to 2.0|
|Copper||0 to 0.75||0.015 to 0.75|
|Manganese||0 to 1.8||0.03 to 1.8|
|Molybdenum||0 to 1.2||0.01 to 1.2|
|Nickel||0 to 2.0||0.02 to 2.0|
|Phosphorus||0 to 0.4||0.005 to 0.4|
|Silicon||0 to 2.5||0.15 to 2.5|
|Sulfur||0 to 0.08||0.01 to 0.08|
|Tin||0 to 0.14||0.004 to 0.14|
|Titanium||0 to 0.12||0.003 to 0.12|
|Vanadium||0 to 0.22||0.008 to 0.22|
AQuantitative range in accordance with Practice E1601.
Note 1--The concentration ranges of the elements listed have been established through cooperative testing of reference materials. These concentration ranges can be extended by the use of suitable reference materials.
1.2 This test method covers analysis of specimens having a diameter adequate to overlap the bore of the spark stand opening (to effect an argon seal). The specimen thickness should be sufficient to prevent overheating during excitation. A heat sink backing may be used. The maximum thickness is limited only by the height that the stand will permit.
1.3This 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 and health practices and determine the applicability of regulatory limitations prior to use.
2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.
E135 Terminology Relating to Analytical Chemistry for Metals, Ores, and Related Materials
E158 Practice for Fundamental Calculations to Convert Intensities into Concentrations in Optical Emission Spectrochemical Analysis
E172 Practice for Describing and Specifying the Excitation Source in Emission Spectrochemical Analysis
E305 Practice for Establishing and Controlling Atomic Emission Spectrochemical Analytical Curves
E351 Test Methods for Chemical Analysis of Cast Iron--All Types
E406 Practice for Using Controlled Atmospheres in Spectrochemical Analysis
E826 Practice for Testing Homogeneity of a Metal Lot or Batch in Solid Form by Spark Atomic Emission Spectrometry
E1019 Test Methods for Determination of Carbon, Sulfur, Nitrogen, and Oxygen in Steel, Iron, Nickel, and Cobalt Alloys by Various Combustion and Fusion Techniques
E1329 Practice for Verification and Use of Control Charts in Spectrochemical Analysis
E1601 Practice for Conducting an Interlaboratory Study to Evaluate the Performance of an Analytical Method
E1763 Guide for Interpretation and Use of Results from Interlaboratory Testing of Chemical Analysis Methods
E1806 Practice for Sampling Steel and Iron for Determination of Chemical Composition
ICS Number Code 71.040.50 (Physicochemical methods of analysis)
UNSPSC Code 11101713(Iron)