Copper corrosion from petroleum products

Test method for porosity in gold platings on metal substrates by gas exposures Test method for half-cell potentials of uncoated reinforcing steel in concrete Method for detection of copper corrosion from petroleum products by the copper strip tarnish test... 

Detection of Copper Corrosion from Petroleum Products by the Copper Strip Tarnish Test... 

Detection of Copper Corrosion from Petroleum Products by the Copper Strip Tarnish Test," Amer. Soc. for Test, and Mater., D130 (1976). 

Presence of small amounts of some sulfur compounds in certain refined products (gas and liquid) can have a corrosion effect on copper alloy components of users equipment that adversely affects their function. For example, copper corrosion products could cause plugging of metering and pilot valves. Consequently, product specifications may call for the product to pass a copper corrosion test such as ASTM D 1838, Test Method for Copper Strip Corrosion by Liquefied Petroleum (LP) Gases, or ASTM D 130, Test Method for Detection of Copper Corrosion from Petroleum Products by the Copper Strip Tarnish Test, or ASTM D 4048, Test Method for Detection of Copper Corrosion from Lubricating Grease. 

Standard Test Method for Mercurous Nitrate Test for Copper and Copper Alloys Standard Specification for Cellulosic Fiber (Wood-Base) Loose-Fill Thermal Insulation Standard Test Method for Half-CeU Potentials of Uncoated Reinforcing Steel in Concrete Standard Test Method for Detection of Copper Corrosion from Petroleum Products by the Copper Strip Tarnish Test... 

The relative importance attached to sulfur compounds in petroleum may, at first, seem unwarranted, but the presence of sulfur compounds in any crude oil can only result in harmful effects. For example, the presence of sulfur compounds in finished petroleum products such as gasoline will cause corrosion of engine parts, especially under winter conditions when water containing sulfur dioxide (from the internal combustion) may collect in the crankcase. On the other hand, mercaptans cause the corrosion of copper and brass in the presence of air and also have an adverse effect on the color stability of gasoline and other liquid fuels. 

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