Physical Traits
The tendency of a material to fail suddenly.
Brittleness
Define Corrosion Resistance?
What is the ability of a material to resist the chemical attack by other elements and chemical compounds.
Define Element
What is a substance that cannot be broken down into two other substances. Found on the periodic Table of elements.
The ability of a material to resist indentation, scratching or abrasion
What is hardness?
Define Ferrite
What is pure iron (Fe) crystal structure?
The resistance of a material to a force which is acting to pull it apart.
Tensile strength
Define Electrical Conductivity
What is the rate at which electrical current will flow through the metal or material?
Define Alloy
What is a material having metallic properties and combined of two or more elements.
The maximum pulling force to which the material can be subjected without failure.
Ultimate Tensile Strength
Define Ferrous
What is a metal dominated by iron in its Crystalline structure?
The physical effect of a stress, usually evidenced by stretching or other deformation of the material.
Strain
Define Electrical Resistance.
What is the resistance of the metal (or material) to the flow of an electrical current through it?
What is Thermal Conductivity?
The measure of the rate at which heat will flow through a material.
The stress point at which permanent deformation results.
Yield strength
Define Slag
What is the non-metallic layer that forms on top of molten metal, typically composed of oxides, silicates and other impurities? ( Slag inclusions or low density inclusions are indications and/or defects in welds and castings)
The resistance of a material to a repeated or alternating stressing without failure:
Fatigue strength
Define stress Raiser (Stress Riser)
What are irregularities within a metal or in the surface or geometry of a product/part, tending to cause a concentration of stresses as the load is applied OR as radical thermal expansion and contraction occurs. (examples: Weld under cut, splines, keyways, etc)
Define Forge Welding
What is a process of joining metals by heat and pressure, usually at temperatures below fusion (melting point) of either metal. Blacksmith welding is an example of forge welding.
The increse of a body (size or dimension) due to a change in it's temperature.
What is Thermal Expansion?
Define Transformation rate
What is the rate of speed at which a metallic material changes from one state to another, often impacting the hardness, toughness, and other physical attributes of the metal.
The ability of a material to be permanently deformed without failure:
Ductility
Define Notch Toughness
What is the resistance of a metal to adverse effects from the presence of notches or similar irregularities? (Example: high carbon vs. alloy tool steel)
Define Fusion
What is the melting of metal to the liquid state, permitting two contacting metal surfaces to partially exchange their contents, creating a bond of the two separate metals. (also used in plastics and some composites)
The maximum stress to which a material can be subjected without permanent deformation or failure by breaking.
Elastic limit
Define Work hardening
What is the capacity of a material to harden as the result of cold rolling or other cold working involving the deformation of the metal.