Boron steels are used as high-quality, heat-treatable constructional steels, steels for carburization and cold forming steels such as steels for screws. The basic effect of boron on in the steel is the enhancement of hardenability, which is evident already at a very small concentration, of the degree of 0.0010% of boron. It is added to unalloyed and low alloyed steels for the hardness level enhancement through the hardenability. Even in the small quantity of the degree of size up to 100 ppm, boron gives the same effect of the hardenability enhancement as other more expensive elements which must be added in much bigger quantity
Boron steels are used as high-quality, heat-treatable constructional steels, steels for carburization and cold forming steels such as steels for screws. The basic effect of boron on in the steel is the enhancement of hardenability, which is evident already at a very small concentration, of the degree of 0.0010% of boron. It is added to unalloyed and low alloyed steels for the hardness level enhancement through the hardenability. Even in the small quantity of the degree of size up to 100 ppm, boron gives the same effect of the hardenability enhancement as other more expensive elements which must be added in much bigger quantity
An outstanding feature of boron steels is the improvement in hardenability produced by the addition of even a minute quantity of boron Boron steels are used for a variety of applications, as a wear material and as a high strength structural steel. Examples include punching tools, spades, and knives, saw blades, safety beams in vehicles etc.
Carbon-manganese-boron steels are generally specified as replacements for alloy steels for reasons of cost: C-Mn-B steels are far less expensive than alloy steels of equivalent hardenability. Applications for these steels include earth scraper segments, track links, rollers, drive sprockets, axle components and crankshafts.
Boron alloy steels are specified when the base composition meets mechanical property requirements (toughness, wear resistance, etc.), but hardenability is insufficient for the intended section size. Rather than call for a more highly alloyed and therefore more expensive steel, a user may simply specify the corresponding boron grade, thereby ensuring suitable hardenability.
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