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41xx steel is a family of SAE steel grades, as specified by the Society of Automotive Engineers (SAE). Alloying elements include chromium and molybdenum, and as a result these materials are often informally referred to as chromoly steel (common variant stylings include chrome-moly, cro-moly, CrMo, CRMO, CR-MOLY, and similar).
4130: 25CrMo4 GS-25CrMo4: 708A30 CDS110: 25CrMo4 (KB) 30CrMo4: SCM 420 SCM 430 SCCrM1 1.7223 1.7225 1.7227 1.3563: 42CrMo4: 4140/4142: 41CrMo4 42CrMo4 42CrMoS4 43CrMo4: 708M40 708A42 709M40 En19 En19C: 41CrMo4 38CrMo4 (KB) G40 CrMo4 42CrMo4: SCM 440 SCM 440H SNB 7 SCM 4M SCM 4 1.6582 1.6562: 34CrNiMo6: 4340: 34CrNiMo6 40NiCrMo8-4: 817M40 En24 ...
Ferrous alloys are usually either "full annealed" or "process annealed". Full annealing requires very slow cooling rates, in order to form coarse pearlite. In process annealing, the cooling rate may be faster; up to, and including normalizing. The main goal of process annealing is to produce a uniform microstructure.
In the semiconductor industry, silicon wafers are annealed to repair atomic level disorder from steps like ion implantation. In the process step, dopant atoms, usually boron, phosphorus or arsenic, move into substitutional positions in the crystal lattice, which allows these dopant atoms to function properly as dopants in the semiconducting ...
The U.S. Army says transgender individuals may no longer join the service. While other branches have not yet made similar posts announcing the change, it is expected across the military.
A cab driver claims he “had no idea” he had become the getaway driver for a robbery at a bank in Massachusetts, according to reports. Dennis Ferrante was working his normal shift when a man ...