Generally Non Hazardous

• Tin: solder, coatings on component leads.
• Copper: copper wire, printed circuit board tracks, component leads.
• Aluminium: nearly all electronic goods using more than a few watts of power (heatsinks), electrolytic capacitors.
• Iron: steel chassis, cases, and fixings.
• Germanium: 1950s–1960s transistorized electronics (bipolar junction transistors).
• Silicon: glass, transistors, ICs, printed circuit boards.
• Nickel: nickel-cadmium batteries.
• Lithium: lithium-ion batteries.
• Zinc: plating for steel parts.
• Gold: connector plating, primarily in computer equipment.