A-A-50493 Oil, Penetrating for Loosening Frozen Metallic PartsThis commercial item description CID establishes the government acquisition requirements for penetrating oil to be used for freeing of corroded and frozen metallic parts resisting movement, without causing damage to such parts. The penetrating oil is applied to metal surfaces to break down rust and corrosion, reduce friction, and retard corrosion.

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A-A-50493C

3. SALIENT CHARACTERISTICS

3.1 Materials.

3.1.1 Class A. The penetrating oil for class 1 shall be formulated with a bio-based oil, with or without additives.

3.1.2 Class B. The penetrating oil for class 2 shall be formulated with a synthetic oil or light mineral oil, or a mixture of these oils, with or without additives.

3.2 Bio-based content. The class A penetrating oil shall have a minimum of 68% by weight of bio-based content in accordance with United States Department of Agriculture (USDA) designated categories of bio-based products in the BioPreferred Program for penetrating lubricants when tested in accordance with ASTM International (ASTM) D6866, "Standard Test Methods for Determining the Biobased Content of Solid, Liquid, and Gaseous Samples Using Radiocarbon Analysis". A bio-based material shall be defined in accordance with the Farm Security and Rural Investment Act (also called FSRIA or the 2002 Farm Bill) of 2002 Section

9002 (Public Law 107-171, dated May 13, 2002) and determined by the US Secretary of

Agriculture.

3.3 Performance.

3.3.1 Pour point. The penetrating oil shall have a pour point of not greater than -14 °F (-25 °C) when tested in accordance with ASTM D97, "Standard Test Method for Pour Point of Petroleum Products".

3.3.2 Viscosity. The penetrating oil shall have a viscosity of 1.7 to 10 millimeter2/second

(mm2/s) at 104 °F (40 °C) when tested in accordance with ASTM D445, "Standard Test Methods for Kinematic Viscosity of Transparent and Opaque Liquids (and Calculation of Dynamic Viscosity)".

3.3.3 Flash point. Penetrating oil with a kinematic viscosity of 1.7 to 5.5 mm2/s at 104 °F (40

°C) shall have a minimum flash point of 125 °F (51.7 °C) when tested in accordance with ASTM D56, "Standard Test Method for Flash Point by Tag Closed Cup Tester". Penetrating oil with a kinematic viscosity of greater than 5.5 mm2/s at 104 °F (40 °C) shall have a minimum flash point of 125 °F (51.7 °C) when tested in accordance with ASTM D93, "Standard Test Methods for Flash Point by Pensky-Martens Closed Cup Tester".

3.3.4 Water. The penetrating oil shall have 0.0 percent water content when tested in accordance with ASTM D95, "Standard Test Method for Water in Petroleum Products and Bituminous Materials by Distillation", and 40 Code of Federal Regulations (CFR) 60, Appendix A, Method

24, "Determination of Volatile Matter Content, Water Content, Density, Volume Solids, and

Weight Solids of Surface Coatings".

3.3.5 Corrosion. The penetrating oil shall cause no corrosion when tested in accordance with method 5306 "Corrosiveness of Emulsifiable Cutting Fluids" of FED-STD-791, "Lubricants,