- 行业: Mining
- Number of terms: 33118
- Number of blossaries: 0
- Company Profile:
The U.S. Bureau of Mines (USBM) was the primary United States Government agency conducting scientific research and disseminating information on the extraction, processing, use, and conservation of mineral resources.
Founded on May 16, 1910, through the Organic Act (Public Law 179), USBM's missions ...
An alloy of iron and one or more other elements useful for making alloy additions in steel or ironmaking.
Industry:Mining
An alloy of nickel and iron, containing about 36% nickel, and having an extremely low coefficient of thermal expansion. It is used in the construction of surveying instruments, such as pendulums, level rods, first-order leveling instruments, and tapes.
Industry:Mining
An alloy steel that contains one alloying element; the term is synonymous with a simple alloy steel. It contains the one element plus the iron and carbon, hence ternary.
Industry:Mining
An alloy used in drill-bit-crown matrices and in making bit and reaming-shell inserts by powder methods in which the principal constituent is tungsten, generally in the form of carbide. Tungsten carbide powder usually is mixed with a powdered cobalt or other metal to bind it together in a cohesive mass.
Industry:Mining
An alloy usually containing 90% or more of platinum. The remaining percentage is of iridium, which is necessary to produce an alloy sufficiently stiff for use in gem mountings.
Industry:Mining
An alloy, rich in one or more alloying elements, added to a melt either to permit closer composition control than is possible by addition of pure metals or to introduce refractory elements not readily alloyed with the base metal.
Industry:Mining
An alloy, rich in one or more desired addition elements, that can be added to a melt to raise the percentage of a desired constituent.
Industry:Mining
An alluvial fan with steep slopes; it is generally higher and narrower than a fan, and is composed of coarser and thicker material believed to have been deposited by larger streams. The term is sometimes used synonymously with alluvial fan. Compare: alluvial fan
Industry:Mining
