Tinplate is an iron tin alloy, plated with tin.
It is mainly used for packaging iron boxes and cans of consumer food. Due to the separation of the strength and molding of steel from the corrosion resistance, soldering ability, and aesthetics of tin in the materials, tinplate has corrosion resistance, non-toxic, high strength, and ductility.
Tinplate is classified by thickness and tin plating amount. Generally speaking, in order to save costs, current industrial consumption will reduce the thickness of iron and tin coatings while ensuring reliable packaging strength.
One is to reduce the use of tin and even eliminate the need for tin (chrome plated iron). From the development of hot-dip tinplate in the 1950s to the current electroplating of tinplate, China has not yet seen the use of hot-dip tinplate in canned goods.
The second is to reduce the thickness of the tinned substrate. This is a common desire, and currently in China, 0.15 meter/meter tinplate has been used to make lids. Some cold rolled sheet companies have announced that they can consume 0.12 meters per meter of cold rolled sheet for the hat industry. Therefore, secondary cold rolling of thin substrate with high hardness tinplate is the development direction of the can (lid) industry.