A Type 2 interlaboratory precision was evaluated in Both repeatability and reproducibility are short term, aperiod of a few days separates replicate test results.
A test resultis expressed on the basis of a median value, as specified by TestMethods D obtained on 3 determinations or measurementsof the property or parameter in question. Six different materials were used in the interlaboratoryprogram, these were tested in 3 laboratories on 2 different days. Please seeannex of Test Method D for more details on this work. The appropriate value is that value of r or R associated with amean level in the precision tables closest to the mean levelunder consideration at any given time, for any given material inroutine testing operation.
The repeatability r, of this test methodhas been established as the appropriate value tabulated in theprecision tables. Two single test results, obtained under normaltest method procedures, that difer by more than this tabulatedr for any given level must be considered as derived fromdifferent or non-identical sample populations.
The reproducibility R,of this testmethod has been established as the appropriate value tabulatedin the precision tables. The precision results indicate that the repeatability andreproducibility of both percent tensile strength change andpercent elongation change are essentially the same.
Also thevalue of r or R, or both does not vary with the magnitude ofpercent elongation or percent tensile strength change. Novalues are given for r or R because of the near zero averagevalues for some of the materials. A Summary of Changes section appears at the end of this standard. Search by keyword or standard number. A number in parentheses indicates the year of last reapproval. Right now, we have a 2-to-Matching Gift Campaign, so you can triple your impact, but time is running out!
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. Literature Online. Note 1: There are standards covering high nickel, chromium, austenitic corrosion, and heat-resisting alloy materials. Sets of EN standards with a discounted price. This standard may involve the use of hazardous materials, operations, and equipment.
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