Concise Bible Dictionary:

The well-known heavy metal. It is mentioned as early as Exodus 15:1010Thou didst blow with thy wind, the sea covered them: they sank as lead in the mighty waters. (Exodus 15:10), where its weight is alluded to. Job speaks of it, apparently, as being used for filling in the engravings on stones. It was no doubt also used for making solder (Num. 31:2222Only the gold, and the silver, the brass, the iron, the tin, and the lead, (Numbers 31:22); Job 19:2424That they were graven with an iron pen and lead in the rock for ever! (Job 19:24); Jer. 6:2929The bellows are burned, the lead is consumed of the fire; the founder melteth in vain: for the wicked are not plucked away. (Jeremiah 6:29); Ezek. 22:18,2018Son of man, the house of Israel is to me become dross: all they are brass, and tin, and iron, and lead, in the midst of the furnace; they are even the dross of silver. (Ezekiel 22:18)
20As they gather silver, and brass, and iron, and lead, and tin, into the midst of the furnace, to blow the fire upon it, to melt it; so will I gather you in mine anger and in my fury, and I will leave you there, and melt you. (Ezekiel 22:20)
; Ezek. 27:1212Tarshish was thy merchant by reason of the multitude of all kind of riches; with silver, iron, tin, and lead, they traded in thy fairs. (Ezekiel 27:12); Zech. 5:7-87And, behold, there was lifted up a talent of lead: and this is a woman that sitteth in the midst of the ephah. 8And he said, This is wickedness. And he cast it into the midst of the ephah; and he cast the weight of lead upon the mouth thereof. (Zechariah 5:7‑8)).
Lead with Pyrochroite