Copper Corrosion Test 1a 1b

Digital copper corrosion measurement vs.

Copper corrosion test 1a 1b. This test is often performed for automotive companies to determine how suitable a lubricant is for lubricating parts such as bearings that contain copper or copper alloys because corrosion can. The copper strip corrosion test is designed to assess the relative degree of corrosivity of a petroleum product. In standardized test method astm d130 for oils or d4048 for grease the rating of 1a is given for appearance of freshly polished copper coupons and 1b indicates slight tarnish. The rating of 1a is given for appearance of freshly polished copper coupons with slight discoloration but barely noticeable.

1b indicates slight tarnish and the ratings proceed further down the scale as corrosion staining of the test coupon increases with 4c being the worst. While it is known that hydrogen sulfide will cause the failure of the copper strip test it is widely believed that the hydrolysis of carbonyl sulfide can also cause the failure of the corrosion test. Copper strip is 1a 1b or if there is any hint of rose color for no. Commercial and hd 5 grade propane is required to pass the copper strip corrosion test astm test method d 1838.

1b 2b dark tarnish 3b 4a corrosion 4b 4c code oapi viscosity. Maximum temperature of 221 f 1 f 105 c 0 5 c. This test has several specifications that are identified with it. Astm d130 corrosiveness to copper from petroleum products by copper strip test a polished copper strip is immersed in a specific volume of the sample being tested and heated under conditions of.

Our testing library will provide you useful information such as method name number the required volume of sample in order to perform the test as well as a general description of the utility of the test. This must be done at the right depth as per the astm requirements. Search in the input field provided in order to find information on our testing methods. These ranges include freshly polished slightly tarnished 1a to 1b moderately tarnished 2a to 2e dark tarnish 3a to 3b and corrosion 4a to 4c.

Application to propane with carbonyl sulfide and hydrogen sulfide. Cst cst sus 2100f sus co index flash coq of poni poknt of t test mon d 1298 d 445 calc calc d 2270 d 92 d 97 d 665a d 665b d 130 36 5 19 3 754 98 5 154 500 pass pass. Visual rating incorporating. 1 1 this test method covers the determination of the corrosiveness to copper of aviation gasoline aviation turbine fuel automotive gasoline cleaners stoddard solvent.