All You Need To Know About Stainless Steel
Stainless steel is an iron-base alloy containing a minimum of 10.5% chromium content by mass. The chromium is responsible for providing it the corrosion resistant property by forming an invisible layer of chromium-rich oxide surface film. The chromium content in some alloy grades can go more than 30% by mass. It provides great strength even in soft conditions. Due to such properties it is extensively being used in dentistry, aerospace, automotive, recreational and architecture. Due to its rich properties and characteristics, it is used extensively in kitchen products like cooking utensils, cutlery, etc.
Characteristics of Stainless Steel
Stainless steel is available in various forms like sheet, bar, wire, plate, strip, pipes and tubes. Stainless steel flat bar is a major component used in architecture and even in other applications. The characteristics of the alloy remain same in any of these forms and are as follows: This artcle will give you more info about stainless steel bar.
Resistance to Corrosion: It is a common characteristic of all grades of stainless steel.
Resistance to High and Low Temperatures: Stainless Steel retains a large proportion of its properties when put in extreme temperature conditions, though it gets discolored when heated to very high temperatures like during welding. Stainless steel is used in industries requiring high service temperatures.
High Tensile Strength: Stainless steel is characterized by its high strength. It has better tensile strength than mild steel even in fully soft condition.
There are numerous grades of stainless steel available in the market based on their exposure to the working environment. Type 304, 316,409, 410 and 430 are the most common grades among which type 304 stainless steel gains the utmost importance and is the most used grade. Different grades exhibit different properties, mostly in terms of strength, resistance to corrosion and fabrication. One should consider the following parameters.
• Resistance to corrosion: It is the basic criterion for selecting any stainless steel. The degree of corrosion needs to be specified based on the use the alloy will be put to.
• Heat Resistance: Very high temperatures discolor the alloy, but retain major of its properties.
• Mechanical properties: The major characteristic being the strength of the alloy at varying temperatures.
• Fabrication: This forms the base as to how the commodity has to be made. It is done by different means like machining, stamping, welding, forging, etc.)
• Total cost: The final cost of the product along with the maintenance cost needs to be calculated well before buying the product. The longevity of the product is also considered in the overall product cost.
Few Minor Shortcomings
Stainless steel is prone to scratches and dents and loses the outer coating as in case of automobiles and refrigerators. Though they are heat resistant, extreme temperatures like welding leads to the change in color of the alloy.Though stainless steel is resistant to corrosion with water and several acids, hydrochloric acid may prove fatal and cause corrosion.