KARAKTERISASI KEKUATAN MATERIAL TABUNG GAS ELPIJI 3 KG STANDAR SNI DAN NON-SNI

Sari

ABSTRACT

The rise of news about the many fires which allegedly caused by the explosion of Elpiji gas cylinders, interesting to be studied and researched. While Pertamina in charge of Elpiji gas cylinder manufacturer in Indonesia strongly denied that the fire that accompanied the explosion was not caused by the bursting of the cylinders. The opinion is based on Elpiji cylinder manufacturers who have been out of Pertamina and marketed to the user community has been standardized (SNI). In fact, it has been found Elpiji gas cylinders - especially 3kg cylinders - which is unoriginal SNI standard on the market. This study will measure the characteristics of the material 3kg Elpiji gas cylinders that SNI and Elpiji gas cylinders that SNI artificial (non-SNI), which is found in the market. Measurement and testing conducted aiming to determine the material characteristics of these two types of gas cylinders, including tensile strength, the strength of the gas pressure in the cylinders, the content of each material composition and microstructure observation. The results of tests performed on both types of material such 3kg Elpiji gas cylinders, concluded that the tensile strength of both types of cylinders satisfy the standard (SNI), but based on testing conducted proved that the composition of material non-SNI gas cylinders are not tested in accordance with SNI standard 07 - 3018-2006 refers to the standard JIS G 3116, a class of SG 26 (SG 255), SG 30 (SG 295). Microstructure of the picture cylinders material non-SNI look more ferrite phase and the phase grains larger than the cylinders material SNI. Plus the fact that the thickness dimension of non-SNI cylinders plate which is thinner than the SNI cylinder, making the body non-SNI cylinder becomes easier to deform and vulnerable (susceptible) to shock and impact loads. Pressure in the cylinder test performed on both types of cylinders that are safe, so the cylinder will not cause an explosion due to gas pressure.

Keywords: 3Kg Elpiji gas cylinder, SNI standard, non-SNI satndard, the strength of the material.