Cost for keratoconus treatment can vary greatly depending on the best option for the individual patient. Since treatments range from glasses and contact lenses (several hundred dollars) to a corneal transplant (many thousands of dollars) it is difficult to suggest one cost for keratoconus treatment.ost for keratoconus treatment can vary greatly depending on the best option for the individual patient. Since treatments range from glasses and contact lenses (several hundred dollars) to a corneal transplant (many thousands of dollars) it is difficult to suggest one cost for keratoconus treatment.
Steel is an alloy (mixture) of Iron and Carbon. Iron is the element abbreviabed as Fe on the periodic table (number 26), while Carbon is abbreviated as C (number 6).
Steel is a purified alloy of iron with carbon which is manufactured in the liquid state. The manufacturing process eliminates almost all of the phosphorus, sulfur, and silicon which exist in common cast iron. The range of carbon content for steels is 0.1 to 1.5%. Low carbon steels (<0.2% carbon) are called mild steels.