Melting (Failing) Points


Melting (Failing) Points : The following are approximate melting points in degrees Fahrenheit (Ref. NFPA ): Aluminum 150-1500 Brass 575-1800Copper 1981 (average) Glass 400-1600 Iron (pure) 2795 Iron (gray cast) 2246 Iron (white cast) 2102 Iron (wrought) 2750 Iron (cast) 2000-3800 Steel 2350-2675 Tin 425-475 Zinc 750-775 Unprotected steel columns fail in 15 minutes in fire tests. Unprotected cast iron columns fail in 30 minutes. Three inch plan floor or four inch laminated floors fail in 45 minutes
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