...Another melt test, is to take a sample know lead piece and unknow alloy and lay them in the bottom of a flat pan and slowly bring it up to temp. In most cases, the lead will melt before the alloy..
Ductility and malleability are not always coextensive – for instance, while gold is both ductile and malleable, lead is only malleable
I would challenge the statement that lead is not ductile. When it is drawn into wire (stretched), the wire has not lost any material strength.Ductility and malleability are not always coextensive – for instance, while gold is both ductile and malleable, lead is only malleable.
Rich, Jack C. (1988). The Materials and Methods of Sculpture. Courier Dover Publications. p. 129. ISBN 0-486-25742-8.
malleable (ml--bl)
Capable of great deformation without breaking, when subject to compressive stress.
http://www.thefreedictionary.com/malleable
ductile (dktl)
1. Easily stretched without breaking or lowering in material strength.
http://www.thefreedictionary.com/ductile
Usually "pure" lead develops a dull grey oxide when exposed to the elements. The metal in the OP seems to look too bright to be lead that has been used as a wheel weight.