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And stay a solid substance? That depends on the metal. Some are better conductors of heat than others and melting points differ. Most commonly used metals such as brass, stainless steel, aluminum, copper become hot enough to burn when exposed to direct sunlight for a long period of time at ambient temps of 60 degrees F. Industry standards state that metal pipes exposed to temps of 140 degrees F and higher must be insulated to prevent fires.
Thermal conductivity for different metals:
Aluminium = 237
Lead = 35.3
Iron = 80
Copper = 401
That means that if all are at the same high temperature, touching copper will likely burn skin faster because transfers (conducts) its heat faster than lead.
Melting point temperatures are much much higher and aren't encountered in a normal environment.
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∙ 11y ago
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