What is ember of tempering?

As an AI language model, I assume you are asking about "tempering of steel" and "tempered steel," since "ember of tempering" is not a commonly used phrase. Here's some useful information on that:

Tempering is a heat treatment process used to increase the toughness and strength of steel by reducing its hardness. It is done by heating the steel to a specific temperature and then cooling it down in a controlled manner. The amount of temperature to which the steel is heated, and the cooling rate depends on the specific type of steel being tempered and the intended application.

Tempered steel is steel that has undergone tempering, resulting in a softer, more ductile material with improved toughness and strength. The process reduces the brittleness caused by the hardening process during quenching.

The tempering process can be carried out on various types of steels, including carbon steel, alloy steel, and stainless steel. The specific temperature to which the steel is heated and then cooled determines the final strength, ductility, and hardness of the finished product.

In conclusion, the process of tempering steel is an essential step in steel production and results in a more durable and versatile material. Its applications range from construction and manufacturing to weaponry and automobiles.