ASTM D6121 Test Method for Evaluation of the Load Carrying Capacity of Lubricants
ASTM D6121 Standard Test Method for Evaluation of the Load Carrying Capacity of Lubricants Under Conditions of Low Speed and High Torque Used for Final Hypoid Drive Axles
13. Report
13.1 Report all information shown in the current report format, which is available from the TMC.
13.2 Attach the temperature recording trace for the test as part of the report.
13.3 When reporting reference oil test results to the TMC, transmit by facsimile the complete report form package (see Annex A7) within five days of test completion. Within 30 days of test completion, mail a copy of the final test report to the ASTM Test Monitoring Center, 6555 Penn Ave., Pittsburgh, PA 15206-4489. Electronic transfer of test results (see 13.6) is also permitted for approved laboratories.
13.4 Complete all test report forms in accordance with the formats shown in Annex A11 (Data Dictionary). Include a completed report form package in the final test report.
13.5 Deviations from Test Operational Limits - Report all deviations from specified test operational limits on Form 4 (Fig. A7.6) under Other Comments.
13.6 Electronic Transmission of Test Results - Electronic transfer of reference and non-reference oil test report data can be done utilizing the Flat File Transmission Format contained in Section 2 of the ASTM Data Communications Committee Test Report Transmission Model, available from the ASTM TMC.
14. Precision and Bias
14.1 Precision - The precision of this test method as determined by the statistical examination of the interlaboratory test results. Test precision is established on the basis of operationally valid tests conducted on reference oils supplied by the users of this test method that are deemed appropriate. Detailed industry precision data may be found in Research Report 1415.
14.1.1 Repeatability - The difference between successive total numerical rating 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 this test method, exceed the following value in only one case in twenty. The repeatability number is calculated for a total numerical rating number of a marginal quality lubricant.
Repeatability = 0.7
14.1.2 Reproducibility - The difference between two single and independent total numerical rating results obtained by different operators working in different laboratories on identical material would, in the long run, exceed the following value only in one case in twenty. The reproducibility number is calculated for a total numerical rating number of a marginal quality lubricant.
Reproducibility = 1.2
NOTE 2 - The values in the statements were determined in a cooperative program conducted by the L-37 Surveillance Panel and discussed in the Research Report D02–1415.
14.2 Bias - No estimate of bias is possible, as the behavior of a lubricant is determined only under specific conditions of the test and no absolute standards exist.
15. Keywords
15.1 abrasive wear; adhesive wear; bearing failure; final drive axle; gear; gear failure; hypoid axle; lubricants; L-37; surface fatigue
