Life Insurance Mortality Tables. Life insurance companies use what is called a Life Insurance Mortality Table (aka actuarial table or life table) to come up with policy rates. This table takes your age and calculates how many years you have left to live if you live to the average life expectancy.
Rust is the normal electrochemical process of metals returning to their natural unrefined state. It occurs when Iron, Oxygen and Water (air moisture) combine. The rusting process can be accelerated when Iron is subjected to nature's minerals, chemicals and temperature fluctuations.
Answer 1: oxygen and carbon in the air :-). Answer 2: Depends on what type of corrosion you are referring to. Rust and corrosion are typically used interchangeably. Rust is one type of corrosion.Corrosion is essentially the disintegration of a engineered material. Rust is a chemical reaction, but there are other chemical reactions that cause corrosion of steel (typically acids).Other types of corrosion include fretting, erosion, cavitation, and galvanic reactions. There are many methods to prevent corrosion.nswer 1: oxygen and carbon in the air :-). Answer 2: Depends on what type of corrosion you are referring to. Rust and corrosion are typically used interchangeably. Rust is one type of corrosion.