LT is produced by passing the steel through a molten bath of terne metal (lead and tin alloy) in a continuous coating operation. The terne coating provides the steel sheet with a number of enhancements for a variety of applications. It provides good corrosion resistance for fuel tank applications. The terne coating is very ductile and acts as a lubricant for parts that involve deep drawing. The coating provides a surface that is readily solderable for electronic-component chassis applications. Also, the terne coating (without the passivation treatment) is paintable without any special surface preparation.
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