ASTM B263/B263M-14(2020) pdf download

10-04-2020 comment

ASTM B263-14(2020) pdf download.Standard Test Method for Determination of Cross-Sectional Area of Stranded Conductors.
ASTM B263-14(2020) covers the procedure for determining the cross-sectional area of stranded conductors by the mass method.
Samples shall be taken from the outer end of reel or spool lengths, or from either end of coiled lengths.
Unless otherwise specified by the purchaser at the time of placing the order, a sample shall consist of the number of production units (reels or coils) shown in Table 1 or in accordance with Specification B830.
Cut the test specimen, making sure that the ends are at the right angles to the axis of the conductor.
Measure the length of the specimen at room temperature (see Note) to the nearest 1/32 in. [1 mm], and measure the mass to within ±0.1 %, converting to pounds [grams] if weighed in other units.
NOTE 1: Correction for temperature variation need not be made, since the error introduced in the length measurement by the temperature variation is less than the required accuracy of the length measurement.
Precision and Bias
Precision—This test method has been in use for many years. No statement of precision has been made and no work has been planned to develop such a statement.
Bias—This test method has no bias because the value for cross-sectional area is determined solely in terms of this test method.

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