Richards2 has calculated the heat of the thermit reaction as 2694 deg. Cent. The temperature commonly given by the manufacturers is 3000 deg. Cent. M. Fery, using his new radiation pyrometer, found the temperature of the stream of steel as it flowed from the crucible to be 2300 deg. Cent - probably about right when one makes allowance for the chilling effect of the crucible. Taking the melting point of steel as roughly 1350 deg. Cent., the thermit steel is nearly twice as hot.

1 Engineering and Mining Journal, June 15, 1907.

2 Electrochemical and Metallurgical Industry, J. W. Richards, June, 1905.