ASTM D5182 Evaluating the Scuffing Load Capacity of Oils (FZG Visual Method)
11. Report
11.1 Report the failure load stage according to the criteria outlined in 10.4.2. If the criteria was not met at the end of load stage 12 then report the failure load stage as greater than 12.
12. Precision and Bias
12.1 Precision - The precision of this test method as determined by the statistical examination of the interlaboratory test results is as follows:
12.1.1 Repeatability - The difference between successive results obtained by the same operator with the same apparatus under constant operating conditions on identical test materials would, in the long run, in the normal and correct operation of the test method exceed the following value in only one case in twenty.
Repeatability = 2
12.1.2 Reproducibility - The difference between two single and independent results obtained by different operators working in different laboratories on identical material would in the long run exceed the following values only in one case in twenty.
Reproducibility = 2
NOTE 1 - The values in the statements were determined in a cooperative program conducted by the FZG Study Group and reported at the June 1989 meeting of L0.11.10 of Committee D2.
12.2 Bias - Since there is no accepted reference material suitable for determining the bias for the procedure in this test method, bias has not been determined.
13. Keywords
13.1 E.P. oils; extreme pressure; FZG; gear oil; gear scuffing; hydraulic fluids; spur gear; transmission fluids
