Possible Clues:

• What�s produced by leader of Motorhead and others
• Smith's medium
• Lead, say, for Bond's boss and others
• Material used in 24-Across
• Megadeth's genre
• Came across Albert in the tin
• With 85-Across, beachcomber's device
• Palladium, e.g
• Tungsten, for example
• Solid material, a good conductor of heat and electricity