Actinium is a soft, silvery-white radioactive metal. Actinium gave the name to the actinide series, a group of 15 elements similar between actinium and lawrencium in the periodic table.
Strength of Actinium
In the mechanics of materials, the strength of a material is its ability to support an applied load without rupture or plastic deformation. The strength of materials essentially considers the relationship between external loads applied to a material and the resulting deformation or change in the dimensions of the material. When designing structures and machinery, it is important to take these factors into account, so that the selected material has sufficient strength to withstand the applied loads or forces and retain its original shape. The strength of a material is its ability to withstand this applied load without failure or plastic deformation.
For tensile stress, the ability of a material or structure to withstand loads tending to elongate is called ultimate tensile strength (UTS). Yield strength or yield strength is the material property defined as the stress at which a material begins to deform plastically, while yield strength is the point where nonlinear (elastic + plastic) strain begins.
Ultimate Tensile Strength of Actinium
Ultimate tensile strength of Actinium is -.
Yield Strength of Actinium
Yield strength of Actinium is -.
Modulus of Elasticity of Actinium
The Young’s modulus of elasticity of Actinium is -.
The shear modulus of elasticity of Actinium is -.
The bulk modulus of elasticity of Actinium is -.
Hardness of Actinium
In materials science, hardness is the ability to resist surface indentation (localized plastic deformation) and scratching. Brinell hardness test is one of the indentation hardness tests, which was developed for hardness testing. In Brinell testing, a hard, spherical indenter is forced under a specific load into the surface of the metal under test.
Brinell hardness of Actinium is approximately -.
The Vickers hardness test method was developed by Robert L. Smith and George E. Sandland at Vickers Ltd as an alternative to the Brinell method to measure the hardness of materials. The Vickers hardness test method can be also used as a microhardness test method, which is mostly used for small parts, thin sections, or case depth work.
Vickers hardness of Actinium is approximately -.
Scratch hardness is the measure of how resistant a sample is to permanent plastic deformation due to friction from a sharp object. The most common scale for this qualitative test is Mohs scale, which is used in mineralogy. The Mohs scale of mineral hardness is based on the ability of one natural sample of mineral to scratch another mineral visibly.
Actinium is has a hardness of approximately -.
Actinium – Crystal Structure
A possible crystal structure of Actinium is body-centered cubic structure
In metals and many other solids, atoms are arranged in regular lattices called crystals. A crystal lattice is a repeating pattern of mathematical dots that extends throughout space. The forces of the chemical bond cause this repetition. It is this repeating pattern that controls properties such as strength, ductility, density, conductivity (property to conduct or transmit heat, electricity, etc.), and shape. There are 14 general types of these patterns known as Bravais lattices.
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|Young’s Modulus of Elasticity||–|
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Properties of other elements