Rockwell hardness piece uniformity (Uniformity Of Rockwell Hardness Blocks)
Be worth the measures permanent depth that press fine H1, H2, H3, H4, H5 to be arranged by the order that reachs to increase by degrees greatly as a child.
Below demarcate condition of the regulation, the hardness uniformity of standard piece with H5 - H1 will express. Express with the percentage of H.
In type: H =(H1 H2 H 3 H4 H5)/ 5.
Note: Set in our country regulations: In calibrating condition changeless circumstance falls, with standard Rockwell hardness plan the working face of standard piece is inhomogenous distributing determine at 5 o'clock, what measure locally together hardness is medium at 5 o'clock the difference of maximum and value.
Hardness of cloth family name piece uniformity (Uniformity Of Brielle Hardness Blocks) in each standard piece answer on whole test range 5 impress that extrude distributings equably.
Set the average of the impress diameter that D1, D2, D3, D4, D5 measures for every, the order that increases by degrees by size is arranged.
Below formulary demarcate condition the uniformity of standard piece is D5 - D1, express with the per cent of D, among them D presses type calculates: D = (d1 D2 D3 D4 D5)/5
Note: Set in our country regulations: Below the circumstance with calibrating changeless condition hardness of the family name that use cloth works fiducial of the working face of standard piece differ to distributing equably locally, determine at 5 o'clock; Be measured the greatest poor value between hardness value was divided at 5 o'clock with at 5 o'clock the arithmetical average of hardness, express with percentage.
Diamond pyramid hardness piece uniformity (Uniformity Of Vickers Hardness Blocks)
In each standard piece ground extrude should distributing equably on whole test range 5 impress.
the arithmetical average of determining each impress diagonal D1, D2, D3, D4, D5 presses the order that reachs to increase by degrees greatly as a child to arrange. Below demarcate condition of the regulation, the hardness uniformity of standard piece decides with the poor value below: D5 - D1.
Express with the percentage of D, among them: D = (d1 D2 D3 D4 D5)/5
Note: Set in our country regulations: Work with diamond pyramid hardness below the circumstance with calibrating changeless condition fiducial of the working face of standard piece different what measure locally the biggest difference between hardness value was worth at 5 o'clock except with at 5 o'clock the arithmetical average of hardness, express with percentage.

Shore hardness piece uniformity (Uniformity Of Shore Hardness Blocks)
Shore hardness country is used below the circumstance with calibrating changeless condition fiducial (include national secondary standard) of the working face of standard piece differ to distributing equably locally determine at 9 o'clock, what measure the difference that hardness was worth the greatest poor value between and the least value at 9 o'clock.
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