Description / Abstract:
This SAE Recommended Practice presents standardized test methods
developed for use in testing with hydrocarbon fuels or their
surrogates and those same fuels when blended with oxygenated fuel
additives. Hydrocarbon fuels include Gasoline and Diesel fuel or
their surrogates described in SAE J1681. Oxygenated additives
include Ethanol, Methanol Methyl Tertiary Butyl Ether (MTBE) and
Fatty Acid Methyl Esters (FAME or Biodiesel).
Corrosion testing of metals has a long and varied history. In
spite of the problems inherent in extrapolating results of
accelerated tests on standard specimens to actual field durability,
engineers have been able, to a large extent, to rely on these
results in making materials selection decisions. However, these
tests have generally employed aqueous media and not strictly
applicable to the use of organic chemical media. Fuel blends with
oxygenates tend to exhibit high electrical conductivity relative to
straight hydrocarbon fuels, thus the relevance of the historical
database for aqueous corrosion is lost. Therefore, to allow rapid
build-up of a new database, several corrosion test procedures have
been reviewed and amended where appropriate.