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Normas ASTM – AENOR
ASTM D4310-06

ASTM D4310-06

Standard Test Method for Determination of Sludging and Corrosion Tendencies of Inhibited Mineral Oils

Fecha:
2017-08-16 /Historical
Superseeded by:
Scope:

1.1 This test method is used to evaluate the tendency of inhibited mineral oil based steam turbine lubricants and mineral oil based anti-wear hydraulic oils to corrode copper catalyst metal and to form sludge during oxidation in the presence of oxygen, water, and copper and iron metals at an elevated temperature. The test method is also used for testing circulating oils having a specific gravity less than that of water and containing rust and oxidation inhibitors.

Note 1—During round robin testing copper and iron in the oil, water and sludge phases were measured. However, the values for the total iron were found to be so low (that is, below 0.8 mg), that statistical analysis was inappropriate. The results of the cooperative test program are available.

1.2 This test method is a modification of Test Method D 943 where the oxidation stability of the same kinds of oils is determined by following the acid number of oil. The number of test hours required for the oil to reach an acid number of 2.0 mg KOH/g is the oxidation lifetime.

1.3 The values state in SI units are to be regarded as standard. No ther units of measurement are included in this standard.

This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For specific warning statements, see Section 7 and X1.1.5.

Keywords:
antiwear hydraulic oils; circulating oils; copper; corrosion; hydraulic oils; inhibited mineral oils; insoluble material; metal catalysts; oxidation; sludge; steam turbine lubricants; turbine oils
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