An essay on the mystery of tempering steel : wherein the effects of that operation are fully considered / Extracted from the works of the celebrated Mons. Reaumur ; By J. Savigny.

  • Réaumur, René-Antoine Ferchault de, 1683-1757.
Date:
1771
Catalogue details

Licence: Public Domain Mark

Credit: An essay on the mystery of tempering steel : wherein the effects of that operation are fully considered / Extracted from the works of the celebrated Mons. Reaumur ; By J. Savigny. Source: Wellcome Collection.

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    for example* will be very brittle* and yet the fame glafs drawn into threads, will form a flcaine of a very flexible nature, and the more fo, as the threads W * f tm * ^ J i ^ I f ,of which it is compofed are fmaller, Untcmpered fteel may be compared to the mafs formed of the fmalleft parts* and that which is tempered, to the other. It remains to examine, why fteel which has been hardened, will again become f ' ** 'm foft by being heated, or (which is the fame thing,) why it would have remained foft, if inftead of being plunged in water, 4t had been left to cool among the coals, from which it received the heat. It has already been remarked, that both iron and fteel have an eagernefs to imbibe the fulphur and falts* which the G heat