Tempering is a process of heat treating, which is used to increase the toughness of iron-based alloys. It is also a technique used to increase the toughness of glass. For metals, tempering is usually performed after hardening, to reduce some of the excess hardness, and is done by heating the metal to a much lower temperature than was used for hardening. The exact temperature determines the amount of hardness removed, and depends on both the specific composition of the alloy and on the desired properties in the finished product. For instance, very hard tools are often tempered at low temperatures, while springs are tempered to much higher temperatures. In glass, tempering is performed by heating the glass and then quickly cooling the surface, increasing the toughness.

Read more about TemperingIntroduction, History, Terminology, Tempering in Steel, Tempering in Cast-iron, Precipitation Hardening Alloys, Tempering in Glass

Other articles related to "tempering":

Austempering - Process - Tempering
... No tempering is required after austempering if the part is through hardened and fully transformed to either Bainite or ausferrite ... Tempering adds another stage and thus cost to the process it does not provide the same property modification and stress relief in Bainite or ausferrite that it does for virgin Martensite ...
Tempering in Glass
... Tempering, or toughening, of glass is a process in which glass is first heated above its annealing temperature (about 720°C), and then rapidly cooled by jets of cool air, thus hardening the surface of the ...
Chocolatier - Techniques
... Tempering Tempering chocolate is a heat treatment method performed on chocolate involving heating and cooling the chocolate to result in desired characteristics like ... cocoa butter which crystallizes during the heat treatment of melting and tempering chocolate ... and working with, in alternating segments is referred to as tempering ...
... Tempering, in metallurgy, a heat treatment technique for metals and alloys also a method for producing tempered glass Tempering, in cooking, refers to the frying of spices (particu ... Chocolate tempering, a method of increasing the shine and durability of chocolate couverture ...
Mersenne Twister - Algorithmic Detail
... rational normal form (TGFSR(R)), with state bit reflection and tempering ... normal form twist matrix b, c TGFSR(R) tempering bitmasks s, t TGFSR(R) tempering bit shifts u, l additional Mersenne Twister tempering bit shifts with the restriction that 2nw ... the Mersenne Twister is cascaded with a tempering transform to compensate for the reduced dimensionality of equidistribution (because of the choice of A being in the ...

Famous quotes containing the word tempering:

    Despots play their part in the works of thinkers. Fettered words are terrible words. The writer doubles and trebles the power of his writing when a ruler imposes silence on the people. Something emerges from that enforced silence, a mysterious fullness which filters through and becomes steely in the thought. Repression in history leads to conciseness in the historian, and the rocklike hardness of much celebrated prose is due to the tempering of the tyrant.
    Victor Hugo (1802–1885)

    Only after much tempering is steel produced.
    Chinese proverb.