Etymology: Gk ouron. the fluid secreted by the kidneys, transported by the ureters, stored in the bladder, and voided through the urethra. Normal urine is clear, straw-colored, and slightly acid; has the odor of urea; and has a specific gravity between 1.003 and 1.035.
My understanding of true Damascus steel is that it's likely two different crystaline structures, one more ductile (so it can compress to absorb more energy without failing) and the other more brittle (which can hold a sharper edge).y understanding of true Damascus steel is that it's likely two different crystaline structures, one more ductile (so it can compress to absorb more energy without failing) and the other more brittle (which can hold a sharper edge).
Quick Answer. Steel has many advantages over iron, including being harder, more malleable and less brittle. Before steel was created in 1856, the two main types of iron were wrought iron and cast iron, each of which had its own disadvantages. Continue Reading.