Stainless Steel Coil

Stainless steel coils are simply extensions of ultra-thin stainless steel plates. It is mainly a narrow and long steel plate produced to meet the needs of various industrial sectors for the industrial production of various types of metal or mechanical products. Stainless steel refers to steel that is resistant to weak corrosive media such as air, steam, water, and chemically aggressive media such as acid, alkali, and salt. It is also known as stainless acid-resistant steel. In practical applications, steel that is resistant to corrosion by weak media is often called stainless steel, and steel that is resistant to chemical media is called acid-resistant steel. Due to the difference in the chemical composition of the two, the former is not necessarily resistant to chemical media corrosion, while the latter are generally stainless.

Stainless Steel Coil

The Advantages of Stainless Steel Coil:

  • Stainless steel is an environmentally friendly decorative material that does not contain organic substances such as methanol. Not only is there no radiation, but it is also safe and fireproof.
  • On the basis of stainless steel, there are already colored stainless steel, stainless steel etching technology, stainless steel fine grinding mirror surface, sand surface, wire drawing, and other processing methods, making the stainless steel plate more brilliant. Through etching technology, various figures and characters can be carved on the stainless steel toilet surface, and it has a three-dimensional sense and a concave-convex feeling, which improves the disadvantages of monotonous colors and senses of the traditional stainless steel plate.
  • The color stainless steel coil is through chemical reactions on the surface of the stainless steel,  producing an oxide layer on the surface of it. And the color coated is hard to fade away.
  • The color stainless steel coil has the luster and hardness of the metal, which is easy to clean and not scratched. It can resist the corrosion of acid and alkali well, being not easy to rust.

Chemical Composition of Stainless Steel Coil

 C %Si %Mn %P %S %Cr %Mo %Ni %Cu %Others
%
SUS304≤0.08≤0.01≤0.02≤0.045≤0.03018.00-20.00/8.00-10.50//
SUS309S≤0.08≤0.01≤0.02≤0.045≤0.03020.00-24.00/12.00-15.00//
SUS316L≤0.08≤0.01≤0.02≤0.045≤0.03016.00-18.002.00-3.0012.00-15.00//
SUS321≤0.08≤0.01≤0.02≤0.045≤0.03017.00-19.00/9.00-13.00/Ti≥5*C
SUS332
SUS334
SUS430≤0.12≤0.75≤1.0≤0.040≤0.03016.00-18.00/≤0.60//
Ingle 800≤0.04/Al 0.3/21/320.3Ti 0.4
Ingle 840≤0.08≤0.1≤0.1//20/20//

Specification of Stainless Steel Coil

ProductStainless Steel Coil
Thickness0.15mm-3.0mm
Width1000mm-1500mm
Surface2B,BA,HL,Mirror,2D,NO.1
TechnologyCold Rolled, Hot Rolled
Application1)Construction field, shipping building industry;
2)Petroleum and Chemical Industries;
3)Food and Mechanical Industries,etc.
Price$1,200-2,000/ Ton
HS Code72193500

Stainless Steel Type:

According to the composition, it can be divided into Cr series (400 series), Cr-Ni series (300 series), Cr-Mn-Ni (200 series), heat-resistant chromium alloy steel (500 series) and precipitation hardening series (600 series).

200 series: chromium-manganese-nickel

  • 201,202, etc .: replacing nickel with manganese, corrosion resistance is relatively poor, widely used as a cheap substitute for 300 series in China

300 series: chromium-nickel  Austenitic stainless steel

  • 301: Having good ductility and weldability, used for molding products. It can also be hardened by mechanical processing. Its wear resistance and fatigue strength are better than 304 stainless steel.
  • 302: Corrosion resistance is the same as 304. Due to relatively higher carbon content, its strength is better.
  • 303: By adding a small amount of sulfur and phosphorus to make it easier to cut than 304.
  • 304: Universal model, namely 18/8 stainless steel. The standard composition is 18% chromium plus 8% nickel.
  • 304 L: Having the same characteristics with304, but due to lower carbon content, it is more corrosion resistant and easier to being heat-treated, while the mechanical properties are poor.
  • 304 N: Having the same characteristics as 304, it is a kind of nitrogen-containing stainless steel, with nitrogen added to improve the strength of the steel.
  • 309: It has better temperature resistance than 304, and the temperature resistance is up to 980 ℃.
  • 309 S: It contains a large amount of chromium and nickel, so it has a good heat resistance and oxidation resistance.
  • 310: Having excellent oxidation resistance at high temperatures, the maximum operating temperature is 1200 ℃.
  • 316: It is the second most widely used steel grade after 304. It has better resistance to chloride corrosion than 304.
  • 316 L: Due to lower carbon content, so it is more corrosion resistant and easier to heat treatment.
  • 321: Other properties are similar to 304 except that the addition of titanium reduces the risk of corrosion of the material weld.
  • 347: Add stabilizing element niobium, suitable for welding, aviation equipment parts, and chemical equipment.

400 series: Ferritic and martensitic stainless steel, containing no manganese, can replace 304 stainless steel to a certain extent.

  • 408: Having good heat resistance, weak corrosion resistance, and containing 11% Cr and 8% Ni.
  • 409: The cheapest model, usually used as an automobile exhaust pipe, belongs to ferritic stainless steel (chromium steel).
  • 410: Martensite (high-strength chromium steel), having good wear resistance and poor corrosion resistance.
  • 416: The addition of sulfur improves the processing properties of the material.
  • 420: “Cutting grade” martensitic steel, similar to the earliest stainless steel such as Brinell high-chromium steel.
  • 430: Ferrite stainless steel, used for decoration. Having good formability, but poor temperature resistance and corrosion resistance.
  • 440: High-strength cutting tool steel with a slightly higher carbon content, which is among the hardest stainless steels.There are three common models: 440A, 440B, 440C, and 440F (easy to process).

500 series: Heat-resistant chromium alloy steel.

600 series: Martensitic precipitation hardening stainless steel.

 

Application areas: Stainless steel coils are widely used in industries such as chemical industry, food, medicine, paper-making, petroleum, and atomic energy, as well as various parts for construction, kitchen utensils, tableware, vehicles, and household appliances.

FAQ:

What are the differences between a stainless steel coil and cold-rolled steel coil?

1. Different properties: Stainless steel is a steel that is resistant to weak corrosive media such as air, steam, water, and chemically aggressive media such as acids, alkalis, and salts. It is also known as stainless acid-resistant steel. Cold rolled steel is made from hot rolled coils and rolled at room temperature below the recrystallization temperature.

2. Different steel types: Cold rolled steel is steel produced by cold rolling. Stainless steel is a common stainless steel, also known as 18/8 stainless steel in the industry.

3. Different applications: cold-rolled steel is applied in construction, while stainless steel is suitable for food processing, storage, and transportation.

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