Scleroderma refers to a group of rare chronic autoimmune diseases in which the skin and connective tissues tighten and harden; it is a progressive disease. The skin and connective tissues are fibers that make up the framework that supports the body.
Advantages of Carbon Steel compared to other Metals. 1) Faster heating effect. For kitchen use this is especially important as it saves time and reduces the amount of energy used. Stainless Steel, on the other hand, is known to be a poor conductor of heat.
Carbon is often added to steel to increase its hardness. a huge difference in the hardness of the steel. disadvantage-it is much less ductile. blade that won't hold an edge or one that shatters if you drop it. high-carbon steel to give a blade with a hard cutting edge and a reasonably ductile body.