A lot of people find it quite challenging to purchase stainless steel coil. It is to be mentioned that there are more than 60 grades of stainless steel, and many products are expected to come. People should know some factors that can help them choose the best stainless steel coil. There are countless stainless steel coil distributors in the world. People need to be careful so that the stainless steel they purchase should be worth the money. Below mentioned are some factors to consider, so let us get started.
1. Check the resistance to corrosion
Corrosion resistance is the first thing to consider when purchasing stainless steel products. The installation environment is an important factor for stainless steel products. People must check atmospheric conditions, acid, and the concentration of different chemicals in the atmosphere. You can purchase an austenitic stainless steel grade for general purposes if the environment is less corrosive. However, you will have to purchase the stainless steel grade such as 2205, 904L, and 316 in a highly acidic environment.
2. Resistance to heat
Temperature is another factor to consider when purchasing stainless steel products. High temperatures, such as in a furnace environment of (900-1175C) can increase the corrosion of stainless steel products. Moreover, high temperature exerts high pressure on the products. So you will have to purchase heat-resistant stainless steel, such as 253MA and 321MA, if the temperature is always high.
3. Check the cryogenic resistance.
You must check the cryogenic resistance. Low temperature is another factor similar to high temperature. Austenitic stainless steel is more efficient at low temperatures. They can maintain a higher tensile strength at low temperatures compared to ambient temperatures. Regardless of degrading and toughness, such steel is suitable for low temperatures.
4. Check the magnetic response.
You must check the magnetic response. The austenitic grades have a lower magnetic effect. Stainless steel with higher magnetic content, such as 310 and 316 grades, is not magnetic. Martensitic and ferritic stainless steel grades, such as 400 series, are more permeable. On the other hand, duplex grades, such as 2205 and 2101, are ferromagnetic. So you need to check the magnetic response of stainless steel.
5. The required strength
It can be quite complex to know the steel strength that you require. The strength requirement depends upon the installation environment and the purpose of installation. In some cases, high-strength duplex and austenitic stainless steel are suitable. But in some cases, these can be the most unsuitable as they cannot meet your requirements. So you must check the strength that is required for your work.
6. Form of stainless steel matters
There are different shapes in which we can get the stainless steel products, such as tubes, bars, and sheets. The form of the product affects the grade. Every grade is not available in every size and form. However, austenitic stainless steel is versatile steel. However, martensitic steel is commonly available in solid bars, and ferritic steel is available in sheet form.
7. Check the costs
Cost is one of the most important factors when buying stainless steel coil. Stainless steel of high price can be worth the money as it can run for a longer time. So you need to access the costs depending upon the basis of the life cycle. Different 201 stainless steel coil sell the products at different costs.
Checking the good quality stainless steel coil
Stainless steel is a safe-to-use material unless the quality is good. So you should never overlook the quality of the products. However, you might be interested in knowing whether you have bought a good stainless steel coil or not.
The reality of magnet test
You might have heard about the magnet test to check the quality of a stainless steel coil. There is no truth behind this test to check the quality. Rather this test shows whether the coil is austenitic or does the steel contain nickel and chromium. You can find three structures in stainless steel, martensite, ferrite, and austenite. The stainless steel with 18/10 and 18/8 tells you the amount of nickel and chromium.
The first number, such as 18, tells you there is 18% chromium in the stainless steel. The second number, such as 8 and 10, means either there is 8% or 10% nickel in the stainless steel. So both of them are austenitic.