Galvanized Steel Sheet Properties

When exposed to the atmosphere the pure zinc zn reacts with oxygen o 2 to form zinc oxide which further reacts with carbon dioxide co 2.

Galvanized steel sheet properties.

It is the hardness value obtained by applying 980n pressure to the steel ball with a diameter of 1 59mm. Nuts bolts tools and wires of all kinds are now galvanized because it is a cheap process and helps boost the metal s lifespan. 1 t bends in many of the steels were embrittled by galvanizing but galvanized 2 t and 3 t bends in all steels could be completely straightened. In developed countries most larger cities have several galvanizing factories and many items of steel manufacture are galvanized for protection.

According to the american galvanizers association galvanized steel resists corrosion up to 100 times better than uncoated steel. The properties of galvanized steel are a unique combination that make it ideal for use in interior and exterior applications such as car bodies appliances nuts and bolts roofs and rebar. Thus the tensile strength proof strength and tensile elongation of cold rolled steel were unaffected except that the tensile elongation of 40 cold rolled steel tended to be increased by galvanizing. Some drinking water pipes are still made from galvanized steel.

Cool rolled sheet metal is also frequently galvanized. It is suitable for measuring soft metals such as nonferrous metals annealing and normalizing steel. Posmac is a corrosion resistant product that has five to ten times stronger resistance than that of a normal hot dip galvanized steel sheet gi gi h with the same coating weight. Hrc the hardness was obtained by applying 588n pressure at the diamond cone with 120 vertex angle for testing samples.

61 69 the zinc magnesium. Hot dip galvanization is a form of galvanization it is the process of coating iron and steel with zinc which alloys with the surface of the base metal when immersing the metal in a bath of molten zinc at a temperature of around 449 c 840 f. In the last 2 3 decades a large body of literature has been published on further enhancements of the corrosion properties of hdg by additions of magnesium aluminium or a combination of both. This is the most common use for galvanized metal and hundreds of thousands of tons of steel products are galvanized annually worldwide.