Table 1.

Specimen information

No.	Item	Unit	Explanation
1	Substance		Zirconium (polycrystalline).
2	Sourcea		Materials Research Corporation.
3	Purity		99.98%.
4	Impurities		Listed in table la.
5	Geometry		Tube made from rod by electro-erosion.
6	Dimensions (nominal)
	total length	mm	76.2
	effectiveb length	mm	25.4
	outside diameter	mm	6.3
	wall thickness	mm	0.5
	blackbody hole	mm	0.5 × 1 (rectangular).
7	Weight
	total weight	g	4.312
	effectiveb weight	g	1.425
8	Characteristics atomic weight [4]		91.22
	densityc	g · cm−3	6.53
	resistivity at 293 K	10−8Ω · m	42.8

^aThe supplier is identified in this paper in order to adequately characterize the specimen. Such an identification does not imply recommendation or endorsement by the National Bureau of Standards.

^bEffective refers to the portion of the specimen between the voltage probes.

^cMeasured value in the present work.