ASTM D4636 test method for corrosiveness and oxidation stability of oils
ASTM D4636 Standard Test Method for Corrosiveness and Oxidation Stability of Hydraulic Oils, Aircraft Turbine Engine Lubricants, and Other Highly Refined Oils
1. Scope
1.1 This test method covers the testing of hydraulic oils, aircraft turbine engine lubricants, and other highly refined oils to determine their resistance to oxidation and corrosion degradation and their tendency to corrode various metals. Petroleum and synthetic fluids may be evaluated using moist or dry air with or without metal test specimens.
1.2 This test method consists of a standard test procedure, an alternative Procedure 1, and an alternative Procedure 2. As there are variations possible with this test method, it will be up to the particular specification to establish the conditions required. In addition to temperature, the variables to specify if other than those of the standard procedure or alternative Procedure 1 or 2 are: test time, air flow and humidity, sample frequency, test fluid quantity, and metal specimen(s).
1.3 The values stated in SI units are to be regarded as standard. The values in parentheses are for information only.
1.4 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.
2. Referenced Documents
2.1 ASTM Standards:
D91 Test Method for Precipitation Number of Lubricating Oils
D445 Test Method for Kinematic Viscosity of Transparent and Opaque Liquids (the Calculation of Dynamic Viscosity)
D664 Test Method for Acid Number of Petroleum Products by Potentiometric Titration
D1193 Specification for Reagent Water
D3339 Test Method for Acid Number of Petroleum Products by Semi-Micro Color Indicator Titration
2.2 U.S. Federal Test Method Standards:
Method 5307.2 Corrosiveness and Oxidation Stability of Aircraft Turbine Engine Lubricants
Method 5308.7 Corrosiveness and Oxidation Stability of Light Oils (Metal Squares)
MIL-S-13282 Refined Silver (99.95) (P07015)
2.3 Other Standards:
AMS 4616 Silicon Iron Bronze (C65900)
AMS 4908 Titanium Alloy - (8 % Mn) Annealed (R56080)
AMS 6490 Steel (M50) (T11350)
QQ-A-671 Cadmium Anod (L01900)
QQ-C-576 Copper Electrolytic Tough Pitch (ETP) (C11000)
QQ-M-44 Magnesium Alloy AZ31B Condition H24 or H26 (M11311)
QQ-S-698 Low-Carbon Steel 1010, CR Temper No. 4 or 5 (G10100)
QQ-A-250/4 Aluminum Alloy 2024 T-3 or T-4 (A92024)
