Test Method for Copper Strip Corrosion of Liquefied Petroleum Gas

Test Method for Copper Strip Corrosion of Liquefied Petroleum Gas
Liquefied Petroleum Gas (LPG) is a colorless gas or yellowish-brown oily volatile liquid with a special odor, obtained by compressing and cooling refinery gas or natural gas. Composed of hydrocarbons, its main components are propane and butane, and it may also contain small amounts of ethylene, propylene, ethane, and butylene. LPG is flammable, explosive, highly fluid, and has certain toxicity. Its liquid density is 580 kg/m³, gaseous density is 2.35 kg/m³, and gaseous relative density is 1.686.
Due to its properties, LPG is usually used in non-ferrous metal smelting, can serve as a raw material and fuel in the petrochemical industry, and can also be applied in low-temperature extraction of subcritical biotechnology.
Purpose of the Experiment
To determine the corrosiveness of liquefied petroleum gas (LPG) to metals, thereby ensuring that it does not leak and cause other hazards during storage and transportation.
Experimental Samples and Instruments
Experimental Samples：Liquefied Petroleum Gas (LPG)
Experimental Instruments：
1.SD0232 Liquefied Petroleum Gas (LPG) Copper Strip Corrosion Tester

2.Standard copper strips and color comparison plates conforming to SH/T 0232 and ASTM D1838
3.Optional auxiliary instruments such as test tubes, thermometers, and samplers

Experimental Procedures (For details, refer to the SH/T 0232 standard)

1.Prepare the copper strip.

2.Place the test copper strip into the cylinder.

3.Introduce a certain amount of liquefied petroleum gas (LPG), seal the container, and immerse it in a constant-temperature water bath.

4.Keep it at a temperature of 40℃±0.5℃ for 1h±5min.

5.Take out the copper strip and compare it with the standard color comparison plate for observation.

Result Data Analysis and Evaluation

Through the analysis of the measurement results, it is determined that the test results of this batch do not exceed Grade 1 (under the condition of 40℃/1h), which complies with the standard.