FED-STD-791 Lubricants, Liquid Fuels, And Related Products, Testing Method OfThis test method standard is composed of standard test methods for sampling, inspecting and testing lubricants, liquid fuels and related products. It is issued pursuant to the Federal Property and Administration Services Act of 1949, as amended and its application to the purchase of commodities referred to herein is mandatory on all Federal agencies.

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'�NOTE:This draft dated 15 April 2006' by DasH - Page 160 of 460

FED-STD-791D

7. CALCULATIONS

Final Elengation - Initial Elongation

Elongation,% change =

* 100

Initial Elongation

7.1 Calculate the percent change in elongation as follows:

7.2 Calculate the percent change in tensile strength as follows:

Final Tensile Strength - Initial Tensile Strength

Tensile strength,% change =

* 100

Initial Tensile Strength

8. REPORTING

8.1 Report the percentage change in the elongation and tensile strength.

9. PRECISION

9.1 Precision data have not been developed for this method.

Method prepared by:

Air Force - AFWAL/POSL - 1986

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