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.
The gas nitriding for improvement of corrosion resistance of plain carbon steels and low-. alloy steels can be carried out for shorter times at elevated temperatures (Minkevich, 1965). The purpose is to obtain on the steel surface non-etched nitrided layer without pores and. thickness about 0.015 â 0.030 mm.