Materials and Construction
100% H₂SO₄ at 30°C can't be stored in a vessel made/lined with

Teflon, glass and porcelain
Aluminium, tin and rubber
Cast iron and high silicon iron
Mild steel and stainless steel

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Materials and Construction
Lead

Can not be work hardened
Is the lightest metal in common use
Is the hardest metal in common use
Can not be scratched by finger nails

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