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The steel can be coated with differing thicknesses of tin, and even different thicknesses on the two faces (differential coatings) may be produced to cater for varying conditions at the internal and external surfaces of a container.
Users of the standard should note several very significant differences in how the product is produced and marketed. (1) The metric product does not carry the overrun associated with tin mill products produced to customary units. Metric tin mill products are produced to ordered size.
focus on developing stronger, more ductile and formable steel grades to further increase the efficiency of canmaking. These steel grades combine the formability requirements of canmaking with the strength required of the final pack in beer and beverage and food applications.
What is the difference between an average, range or minimum plating thickness specification and how do I properly call out my thickness requirement on a print? There are five (5) methods most commonly used for defining plating thicknesses.
Tin should be not less than 99.5% pure except when alloyed for special purposes. An underplate of nickel at least 50μ" thick is required for tin coatings of 100μ" or less that will not be exposed to solder temperatures (especially ones that will function as a conductive surface).
Tin thickness ( µm) Steel Copper-alloy Figure 1: Recommended tin layer thickness on steel and copper-alloy according to the different environmental classes stated in ISO 2093. DIN 50965 deviate slightly from the ISO 2093 standard because this standard state 4 µm as the tin layer thickness for copper and steel in environmental class 1.
The steel substrate of coated coils can be selected from different steel qualities, from mild steels to advanced high strength steels, and coated with different coating thickness’ depending on the end use requirements. Find out more. ArcelorMittal Dofasco produces a variety of Tin Plate products.
