In the worst case scenario, untreated carpal tunnel syndrome can result in permanent numbness and weakness in the hand. The numbness shows up in your thumb, index, middle, and half of your ring finger. The weakness is in your thenar muscles-at the base of the palm side of your thumb.
Carbon steel, or plain-carbon steel, is a metal alloy. It is a combination of two elements, iron and carbon. Other elements are present in quantities too small to affect its properties. The only other elements allowed in plain-carbon steel are: manganese (1.65% max), silicon (0.60% max), and copper (0.60% max).
Save. The steel alloy of grade 8620 is also called nickel-chromium-molybdenum steel. It is a sturdy alloy, largely composed of carbon, with many uses in the manufacturing trades. Properly hardened and formed, it can be used to make hard-wearing machine parts.ses. When the 8620 alloy is properly carburized --- heated to a set temperature and then exposed to an agent containing carbon, a process which adds an extra layer of carbon to the outside of the steel, thereby making it stronger --- it is used to make such machine parts as gears, crankshafts, and gear rings.