Stainless Steel Strips
tainless steel is the name given to a group of corrosion resistant and high temperature steels. Their remarkable resistance to corrosion is due to a chromium-rich oxide film which forms on the surface. When ordinary carbon steel is exposed to rain water, ekzemple, it corrodes forming a brown iron oxide, commonly called rust, on the surface. This is not protective and eventually the entire piece of steel will corrode and be converted to rust. But when enough chromium (more than about 10%) is added to ordinary steel, the oxide on the surface is transformed – it is very thin, virtually invisible and protective in a wide range of corrosive media. This is what we call stainless steel and there are several different types, and many different grades.
The manufacture of quality stainless steel, from heat to heat and year to year, demands precise control of raw material ingredients and melting practices. Exact quantities of presorted scrap and alloying elements are delivered to the mills’ melting furnaces so that the heats or lots will be within specified composition ranges. Those composition ranges typically include a group of chemical elements for each grade of stainless steel.
- Priskribo
- Types of Stainless Steel Strips
- Enketo
Produkta Nomo
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Stainless Steel Strip
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Teknologio
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Hot Rolled Industrial Stainless Steel Strip
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Cold Rolled Decorative Stainless Steel Strip
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Materialo
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201,202,301,302,304,304L,310S,316,316L,321,430,430A,309S,2205,2507,2520,430,410,440,904L etc, Or Customized
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Dikeco
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Malvarme ruliĝis 0.05-3 mm; Varme ruliĝis 3-10 mm
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Longo
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Customer’s Requirement
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Width
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10-2000 mm or as request
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Surfaco
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BA/NO.1/NO.3/NO.4/8K/HL/1D
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Normo
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JIS AISI ASTM GB DIN EN
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Certifications
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CE, ISO9001
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Pakado
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Water proof and Seaworthy package
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Pagokondiĉoj
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L/C/ T/T (30% DEPOSIT) Or Upon negotiation
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Stock
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Enough Stock
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Grado
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C
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Kaj
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Mn
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P
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S
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En
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Cr
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Mo
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201
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≤0.15
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≤0.75
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5.5-7.5
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≤0.06
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≤ 0.03
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3.5-5.5
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16.0-18.0
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–
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301
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≤0.15
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≤1.0
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≤2.0
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≤0.045
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≤ 0.03
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6.0-8.0
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16.0-18.0
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–
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304
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≤0.08
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≤1.0
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≤2.0
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≤0.045
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≤ 0.03
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8.0-10.5
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18.0-20.0
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–
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304L
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≤0.03
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≤1.0
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≤2.0
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≤0.035
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≤ 0.03
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9.0-13.0
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18.0-20.0
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–
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316
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≤0.08
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≤1.0
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≤2.0
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≤0.045
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≤ 0.03
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10.0-14.0
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16.0-18.0
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2.0-3.0
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316L
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≤0.03
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≤1.0
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≤2.0
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≤0.045
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≤ 0.03
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12.0-15.0
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16.0-18.0
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2.0-3.0
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321
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≤0.08
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≤1.0
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≤2.0
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≤0.035
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≤ 0.03
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9.013
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17.0-1 9.0
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–
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410
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≤0.15
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≤1.0
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≤1.0
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≤0.035
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≤ 0.03
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–
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11.5-13.5
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–
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430
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≤0.12
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≤0.75
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≤1.0
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≤0.040
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≤ 0.03
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≤0.60
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16.0-18.0
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–
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The basic composition of stainless steel is iron (Fe) and chromium (Cr). This is the simplest form of stainless steel, with this family known as the ferritic stainless steels because their crystal structure is called ferrite. (This is also the structure of mild steel.) La ferritic stainless steels are magnetic like ordinary steel. A commonly used grade is Type 430 (S43000) which is used for automotive trim and inside dishwashers and clothes dryers. They are often the least expensive stainless steels but can be more difficult to form and weld.
If you wish to make carbon steel strong and hard, such as for a drive shaft or wear plate, the mill might increase the carbon content, and then heat treat the steel by quenching and tempering it. The same can be done with stainless steel – if the carbon content of ferritic stainless steels is increased, it produces the family of martensitic stainless steels, used for items such as knives, razor blades and corrosion resistant bearings. Martensitic grades are strong and hard, but are brittle and difficult to form and weld. Tajpu 420 (S42000) is a typical example. Like ferritic stainless steels, martensitic stainless steels are magnetic.
The majority of stainless steels contain nickel (En), which is added for a number of reasons but particularly to change the crystal structure from ferrite to austenite. Austenitic stainless steels are ductile, tough and, most importantly, easy to form and weld. These steels are not magnetic in the annealed condition. The most common example is Type 304 (S30400) or “18/8” – the most widely used stainless steel in the world. The lower carbon version, Type 304L (S30403) is always preferred in more corrosive environments where welding is involved. There are numerous applications for this grade, ranging from domestic kitchen sinks and building facades to commercial food processing equipment and chemical plant piping.
Molybdenum (Mo) is added to some stainless steels to increase their corrosion resistance, particularly in marine and acidic environments. It increases an alloy’s pitting and crevice corrosion resistance. These corrosion forms are caused by the common and highly aggressive chloride ion (Cl¯), which is present in salts, such as sea salt and table salt. When 2-3% molybdenum is added to Type 304 or 304L, it creates Type 316 (S31600) or 316L (S31603) stainless steel. They are sometimes referred to as the marine grades of stainless steel, since they are widely used for items such as boat fittings. They are also known as the acid resistant grades, since they have better corrosion resistance in some acids such as sulphuric acid. But their range of applications is wide, from building facades in aggressive atmospheres to piping onboard chemical tankers.
Halfway between the ferritic and austenitic stainless steels is a family called the duplex stainless steels, which are about 50% ferrite and 50% austenite. Because of this duplex structure, they are resistant to stress corrosion cracking which can affect the austenitic stainless steels in hot waters containing chlorides. The most common duplex stainless steel is 2205 (including both S31803 and S32205) and it is used in many applications such as hot water tanks.
Nitrogen (N) is added to some stainless steels, but is very important in duplex grades. It has several beneficial effects. Like nickel, nitrogen promotes austenite (especially important for welding) kaj, like molybdenum, it improves resistance to pitting and crevice corrosion. It also increases strength. Duplex stainless steels are inherently stronger, but a grade such as 2205, which contains about 0.15% nitrogen, has over twice the yield strength of Type 316L. Thus, 2205 is commonly used in tanks for seagoing chemical tankers where both strength and corrosion resistance are required, and for components such as rods and connectors for glass curtain walls in public buildings where the high strength means that the components can be small and so make the structure seem lighter and more transparent.
There is one more family – the precipitation hardening stainless steels. This is a specialized family which has very high strength achieved by adding elements such as copper, which form very fine particles during heat treatment. They generally have slightly higher corrosion resistance than the martensitic stainless steels but, at best, they have slightly less resistance than Type 304. They are commonly used in the aerospace and defence industries, but also find use in items such as pump shafts. 17-4PH (S17400) is a typical example.
In addition to the common grades mentioned above, there are many more specialized grades of stainless steel for applications which require greater corrosion resistance or higher strength. Three examples are Alloy 904L (N08904), which was originally developed for sulfuric acid service, the super-austenitic grade Alloy 254 (S31254), representing a group of 6% Mo stainless steels; and the grade Alloy 2507 (S32750), representing a group of super-duplex alloys. The last two are ‘seawater resistant’ – they will not suffer pitting or crevice corrosion when immersed in ambient temperature seawater. There are also grades developed for such special needs as improved machinability. Cast versions of most wrought grades are also available, usually slightly modified to improve castability.
Nickel-containing stainless steels and nickel alloys play an important role in providing corrosion resistant, and hence leak resistant, materials of construction for projects internationally. Some of these materials also play a critical role in handling gas production, particularly in liquefied form, thus helping to develop difficult-to-access gas reserves.
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Brass Coil
Brass coil has excellent plasticity (best in brass) and high strength, good machinability, easy to weld, very stable to general corrosion, but prone to corrosion cracking; brass coil is copper and the alloy of zinc is named for its yellow color.
The mechanical properties and wear resistance of the brass coil are very good, and can be used to manufacture precision instruments, ship parts, shells of guns, ktp. Brass knocks up and sounds good, so instruments such as cymbals, cymbals, bells, and numbers are made of brass. According to the chemical composition, brass is divided into ordinary copper and special brass.
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Stainless Steel Coil
Stainless steel coil can be divided into cold rolled stainless steel coil and hot rolled stainless steel coil according to different production processes.
According to the materials, they can be divided into austenite, martensite, ferrite and duplex.
Common use stainless steel coils grades are often represented by digital symbols.
There are 200 serio, 300 serio, 400 series and duplex series.
304, 304L, 316 and 316L stainless steel coils are the most popular and economical grades of stainless steels.
Stainless steel 304/304L coils and stainless steel 316/316L coils, along with duplex stainless steel coils offer good corrosion resistance to many chemical environments as well as marine and industrial exposures.
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Aluminium foil
Aluminium foil is aluminium prepared in thin metal leaves with a thickness of less than 0.2mm (7.9 mils); thinner gauges down to 4 micrometers are also commonly used. Standard household foil is typically 0.016 mm (0.63 mils) thick, and heavy-duty household foil is typically 0.024 mm (0.94 mils). And the air conditioner foil can be thinner than 0.0047mm, and some food foil thinner than 0.002mm. The foil is pliable and can be readily bent or wrapped around objects. Thin foils are fragile and are sometimes laminated with other materials such as plastics or paper to make them stronger and more useful. It’s used industrially for a variety of purposes, including packing, insulation and transportation. At home, people use aluminum foil for food storage, to cover baking surfaces and to wrap foods, such as meats, to prevent them from losing moisture while cooking.
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Aluminium Strip
Aluminum sheet & foil in the form of rolls with a thickness > 0.2mm, a width 20mm to 100mm is generally called aluminium strip. The common name for aluminium strip that is produced in small strip widths is usually split strip. Aluminium sheets are cut into a required by slitting tooling, the raw material of aluminum strip is pure aluminium or aluminum alloy hot rolled cast-rolling aluminum coil and hot-rolled coil. Through a cold-rolled machine to form different thickness and width of the rolling sheet and aluminum coil, and then the vertical cutting and slitting machine for different width of the strip. And the thickness<0.2mm, we call it aluminum foil strip or aluminum foil coil.
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Copper Strips
Copper strips have high electrical and thermal conductivity, that’s why copper strips are the best for transformer winding.
What’s more, copper strips transfer heat more effectively than other metals strips.
Copper strips are more malleable and have high tensile strength. Corrosion resistance, high degree stability, and heat dissipation of copper strips are superior to other metals.
Copper strips are mostly used in the electrical and electronics sectors because copper is non-magnetic and non-sparking. Copper strips are mostly used in heat exchangers, transformers winding, condensers, and lightning conductors.
Copper strip thickness range from 0.03mm to 3.0mm. Copper strips can be manufactured in different widths and thicknesses per the customer’s requirement.
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Stainless Steel Sheets
Stainless Steel Sheets & Plates are made up of austenitic steel mainly contain chromium and nickel with the addition of rare elements which offer high corrosion resistance, high tensile strength, excellent impact & toughness and high-temperature resistance at cryogenic temperatures. Moreover, these SS Sheets & Plates are highly demanded in various industries like chemical & nutraĵprilaborado, heat exchangers, fresh & saltwater marine environments, automobiles and more.
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Aluminium Coil
Aluminium coil is a rolled product, produced in a coiled form of a continuous strip, and has an inner diameter and outer diameter. ID from50mm to 1000mm. Aluminium alloy grade including 1xxx, 2xxx, 3xxx, 4xxx, 5xxx, 6xxx, 7xxx, 8xxx. But the most common is 1050, 3003, 6061 kaj 5251 aluminum coil. Thickness from 0.045-80mm, width from 60-2650mm. Common widths of aluminum coil is 800mm,1000mm, 1250mm,1450mm and 1500mm.
Multiple industries rely on aluminium coils for a variety of applications, such as automotive, construction, heat transfer, pharmaceutical, electrical, and food industry. Compared to other materials, aluminum is a far superior material in many instances. Aluminum coil can be supplied with standard mill finish, or it can be brushed, checkered, color coated, satin-finished and anodized. Aluminium sheet or aluminium foil can be cut into coils as per client’s requirements.
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Titanium Bar
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Titanium Sheet
Titanium plate has high corrosion resistance and specific strength, and is widely used in electric power, chemical industry, aviation parts, building materials, sports equipment, medical and other fields and is still expanding. From the point of view of use and manufacturing technology, titanium plate has low price, high performance, multiple functions, and easy production.
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Titanium Strip
Titanium strip is produced from the titanium sheet. Usually cold-rolled the titanium sheet by a small mill with annealing for several times, then slitting shear to titanium strips according to customer requirements. The advanced equipment, rolling process, process control, annealing temperature and return time control ensured its smoothness and finish, effectively improved the quality of our products.
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