According to the definition in GB/T20878-2007, stainless steel is mainly characterized by stainless steel and corrosion resistance, and the chromium content is at least 10.5%, and the carbon content is not more than 1.2%.
Stainless steel is the abbreviation of stainless and acid-resistant steel. The steel that is resistant to weak corrosive media such as air, steam, and water or has stainless steel is called stainless steel. The steel grade is called acid-resistant steel.
Due to the difference in chemical composition of the two, their corrosion resistance is different. Ordinary stainless steel is generally not resistant to chemical medium corrosion, while acid-resistant steel is generally stainless. The term "stainless steel" does not simply refer to one type of stainless steel, but to more than one hundred industrial stainless steels, each developed to perform well in its specific field of application. The key to success is to first understand the application and then determine the correct steel grade. There are usually only six steel grades associated with building construction applications. They all contain 17-22% chromium, and the better grades also contain nickel. The addition of molybdenum can further improve atmospheric corrosion, especially corrosion resistance to chloride-containing atmospheres.
Generally speaking, the hardness of stainless steel is higher than that of aluminum alloy, and the cost of stainless steel is higher than that of aluminum alloy.
Composition of Stainless Steel
Steel is an alloy of iron and carbon. Stainless steels are steels containing at least 10.5% chromium, less than 1.2% carbon and other alloying elements. Stainless steel’s corrosion resistance and mechanical properties can be further enhanced by adding other elements, such as nickel, molybdenum, titanium, niobium, manganese, etc.
Reaction to Contact with Air, Humidity or Water
On contact with oxygen, a chromium oxide layer is formed on the surface of the material. This passive layer protects it and has the unique ability to repair itself.
| Product Name | Square / Rectangle Stainless Steel Pipe,Stainless Steel Tube |
| Surface | N0.1, N0.4, 2D, 2B, HL, BA, 6K, 8K, Mirror, etc. |
| Material | 201,202,301,302,303,304,304L,304N1,309S,310S,316,316L,316Ti,316N,317,317L,321,409L,410,420,430,904,904L, etc. |
| Grade | 200/300/400/500/600/700/800/900 series/duplex stainless steel |
| Standards | AISI ASTM JIS SUS DIN GB |
| Certifications | ISO 9001 and SGS |
| Packing | Industry standard packaging or according to client's requirement |
| Place of origin | Jiangsu China(mainland) |
| Brand | TISCO, ZPSS, Baosteel, POSCO, LISCO, YUSCO, Ansteel, QPSS, JISCO, HXSCO,
Chengde, Yongjin, Tsingshan, Shouyang, HW |
| Payment | T/T, L/C, Western Union, Paypal, Apple Pay, Google Pay, D/A, D/P, MoneyGram |
Stainless Steel Families
Austenitics with manganese or 200 series
These are chromium manganese steels, with a low nickel content (always below 5%).
Applications
Asphalt tankers, tubes, food containers, silos, conveyor chains, safety soles, etc.
Austeno-ferritics or Duplex
0.02% carbon, 0 to 4% molybdenum, 1 to 7% nickel and 21 to 26% chromium. These stainless steels not only offer excellent quality, because of their low nickel content – a material that suffers from highly speculative prices – they are also very cost effective.
Applications
Oil, gas, pulp and paper, desalination sectors, chemical industry, etc.
Martensitics
0.1% carbon, 10.5 to 17% chromium.
Applications
Cutlery, cutting tools, hand tools, springs, etc.
Austenitics or 300 series
0.015 to 0.10% carbon, 16 to 21% chromium, 6 to 26% nickel, 0 to 7% molybdenum. The presence of nickel improves corrosion resistance in certain media and makes stainless steel more ductile. The presence of molybdenum further enhances the resistance to corrosion in an acid medium. The most common grades are 304/304L and 316/316L.
Applications
Boiler market, aeronautics, electronic components, railway equipment, tubes, chemical tanks and food vats, marine applications, containers, etc.
Heat resistant steel applications
Heating systems, resistor jackets, furnace equipment.
Ferritics or 400 series: the KARA ferritic offer
0.02 to 0.06% carbon, 10.5 to 30% chromium, 0 to 4% molybdenum. Commonly used internally, these grades are now being developed for envelope and structural products.
KARA is the Aperam brand for ferritic stainless steels
Unlike other stainless steels, the KARA range doesn’t contain nickel and is thus immune from the erratic price fluctuations of this alloying element. As a result, prices are more stable over time, giving KARA a strong argument in the construction sector where project cost and economic design are key elements.
Applications
Car exhaust systems, conveyor chains, cooking utensils, boilers, domestic appliances, trim, dishware, heating, hot water tanks, tubes, etc.
FAQ：
Q: What kind of work does your company do?
A: We are a business steel industry and trade. We mainly produces stainless steel plate/pipe/coil/round bars, etc.
Q: What are the advantages of your company?
A: (1): Prime quality and Competitive price.
(2): Excellent experiences with after-sale service.
(3): Every process will be checked by responsible QC which insures every product's quality.
(4): Professional packing teams which keep every packing safely.
(5): Samples can be provided as your requirements.
Q: What is your terms of payment ?
A: Can be negotiated by both parties. If you have another question, pls feel free to contact us as below.
Q: What about your price?
A: Our price is very competitive.
Pls feel free to contact us if you are interested in our products.
Q: How long is your delivery time?
A: Stock steel/Steel for simple cutting/Small amount of general standard steel: about 5-20 days for delivery; Custom steel/bulk steel: about 15-30 days for delivery. Contact us for specific delivery times.
