Division 1 In this chapter, the following expressions have the meanings hereby assigned to them:

Tin, not alloyed:

Metal containing by weight at least 99 % of tin, provided that the content by weight of any bismuth or copper is less than the limit specified in the following table:

Tin alloys:

Metallic substances in which tin predominates by weight over each of the other elements, provided that:

1. (1)

   the total content by weight of such other elements exceeds 1 %, or

2. (2)

   the content by weight of either bismuth or copper is equal to or greater than the limit specified in the foregoing table.