A good knife blade is often associated with strong

A good knife blade is often associated with strong, sharp, not easily broken, a good appearance and so forth. but among all the characteristics of the above characteristics which show the most sought after? tajamkah? strong is? they look good?
In general, users seem to have a knife wherever the same desire, to have paisau a good and reliable, but like the saying there is not one thing manausia made perfect, as was also the case with knives.

In the world of metallurgy strong words, and both have been more specific differentiated, and they have never equated. Always there is a difference between Tough, tough, strong, tough and so forth. Well if asked kearakteristik Which there should be said that a good knife. certainly the answer is everything. But what may say, these characteristics are often inversely proportional among all of them, take just one example, Hard (Hard) with a tough (Tough). Violence (Hard, hardness) is defined as the resistance of a plastic material in accepting the changes, some are interpreting ketahahan a material to receive the penetration of other ingredients that have a higher hardness, hardness testers are expressed as the Mohs scale, Brinell Hard (HRB) or Hard Rockwell (HRC). opponents of the hardness is softness. While the toughness (toughness) is the resistance of the material thing else to survive the cracks when the pressure, and this is the opposite of toughness brittleness (brittleness).

Logically knife makers and users everywhere want a knife that has a high hardness so that it can be sharpened as sharp as possible but also have high toughness so as to receive the blow of high load, well ... the thrill starts now, when a material is treated to achieve hardness high through heat treatment, the level of brittleness (brittlenes) the material will increase, it is very undesirable, yes but who wants a sharp knife easily broken ..: D
techniques to reduce losses from the increased brittleness with this diataranya, amplifies only the edge of his course, use other materials as a coating softer parts louder, and use the moment of inertia calculation better.

So if the question arises which one is better knife blade hard or strong / tough? the answer is that which is required, a knife that require high acuity would require high hardness but the blade that requires all-terrain capability will require a high toughness.

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