Brass, and tungsten.
Lead is used for fishing weights.
Lead
Lead is dense and heavy, so a lead fishing weight can be kept small. In the UK, lead fishing weights are banned, anglers must use a different material replacement.
tungsten for split shot, lead for ledger weights
Tire Weights, Fishing Weights, pencils
bullets Automotive batteries Tire weights on automobiles Fishing sinkers
ammunition paint (in the old days) food cans fishing weights..
Lead is an element so it is a pure substance.
Tungsten is an ideal substitute of the lead fishing sinker. It's strong adhesive, semi-solid state, soft for a long term. Tungsten Heavy Alloys concentrate maximum weight in the smallest possible space. They are more often to be used as counterweight in sporting field, such as fishing sinkers, golf weights, etc. Tungsten weights are an ideal, environmentally friendly alternative to lead weights, which are toxic and increasingly being labeled an environmental hazard. They are harder than steel and extremely dense, tungsten being on average 30 percent smaller than its lead counterpart. Meanwhile, they are smaller than conventional weights, create twice the sound of lead weights and maintain their shape for longer. Tungsten is also used in the production of other fishing applications, such as tungsten-carbide line cutters and tungsten powder coating for fishing lines.
Fishing weights are made of a lead alloy due to its density, malleability, and low cost.Gold and uranium would be better for density, but gold is too expensive and uranium is somewhat hard and brittle (but depleted uranium is somewhat inexpensive although still more expensive than lead).
Lead is an element. The fact that it comes as shot, or fishing weights, or curtain weights, or some other form does not make it any thing other than an element. When it is mixed with other substances to create lead crystal, then it is a mixture.
A fishing weight can be made out any material in general but many manufacturers are using Tungsten, Bismuth and brass as substitutes. Unfortunately these tend to be more expensive.