Balusters are square or vertically rotating shafts that can be found on stairs, fences, and other architectural elements. When making furniture, it is called a spindle. In construction, wood, stone are usually used, less often metals and ceramics. A group of balusters supporting fences, partitions, or decorative pieces are called railings. The term "railings" is used to describe shapes such as candlesticks, upright furniture supports, and brass chandelier rods. The term handrail (also known as handrail) refers to handrails or balusters and railings. It can be used to attach supporting structures such as support romances.
Steel is a group of iron-based alloys that contain a minimum of approximately 11% chromium, a composition that prevents the iron from rusting, as well as providing heat-resistant properties. Different types of stainless steel include the elements carbon (from 0.03% to greater than 1.00%), nitrogen, aluminium, silicon, sulfur, titanium, nickel, copper, selenium, niobium, and molybdenum. Specific types of stainless steel are often designated by a three-digit number, e.g., 304 stainless.
The resistance of stainless steel to the formation of iron oxide is due to the presence of chromium in the alloy, which protects the base material from corrosion and forms a passive film that can self-degrade in the presence of oxygen. Corrosion resistance can be increased further, by:
The addition of nitrogen also increases pitting resistance and mechanical strength. There are several types of stainless steels with varying chromium and molybdenum content depending on the environment the alloy must withstand.