What is the difference between 304, 304H and 304L?Type 304 refers to those materials widely used in the manufacture of wire mesh, which contain 18% chromium or 8% nickel (18-8) on a stainless alloy basis, which will not rust when left outdoors and will not oxidize even when the temperature rises to
8k is actually a standard surface treatment of stainless steel. Stainless steel plate surface polishing and grinding, the surface is bright as a mirror, can shine things reflect people, called mirror 8k.We all know that stainless steel plate a chrome-nickel alloy steel, and 8k in the "8" refers to t
The common specifications of stainless steel wire mesh are 1mm-5mm, and the size of the mesh varies from 5cm-25cm. Stainless steel wire mesh specifications mainly from these three directions to see, respectively, mesh size, aperture, wire diameter, etc.. Common specification is the wire diameter, an
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Duplex stainless steels are called "duplex" because they have a two-phase microstructure consisting of ferrite and austenitic stainless steel grains. When a duplex stainless steel is melted, it solidifies from the liquid phase into a fully ferrite structure. When the material cools to room temperature, about half of the ferrite grains transform into austenite grains ("islands"). The result is a microstructure that is approximately 50% austenite and 50% ferrite.
Duplex stainless steels are approximately twice as strong as ordinary austenitic or ferritic stainless steels. As with all stainless steels, corrosion resistance is largely dependent on the composition of the stainless steel. For resistance to chloride pitting and crevice corrosion, its chromium, molybdenum and nitrogen content is most important. Duplex stainless steel grades have a range of corrosion resistance similar to that of austenitic stainless steels, i.e., from type 304 or 316 (e.g., LDX 2101©) to 6% molybdenum (e.g., SAF 2507©) stainless steels.
Hongguan Steel is an ISO 9001:2008 certified company and a leading stockist, supplier and exporter of ASTM A240 duplex stainless steel sheet. Duplex stainless steel coils are cut to your specifications and supplied with a complete set of factory test reports. Custom lengths and widths up to 2000mm are available. Exporting is our specialty! We can supply many hard-to-find grades and non-standard sizes to meet our customers' special requirements. All ASTM duplex steel sheets can be cut to size with the help of our extensive sheet steel product processing expertise.
Our inventory of duplex stainless steel plates includes thicknesses from 6 mm to 80 mm and widths of 1250 mm, 1500 mm, and 2000 mm.
Product | Duplex Stainless Steel Plate |
Surface Finish | BA, 2B, 2D, 4K, 6K, 8K, NO.4, HL, embossed,perforated,water ripple |
Technique | Hot Rolled / Cold Rolled |
Standard | GB JIS ASTM ASME EN |
Steel Grade | 316/316L/316H |
Color | Standard RAL color:red,bule,white,grey,brick,etc. |
Stock Dimension | 0.5mm-4mm x 1220mm/1500mm x 2440mm/2500mm; 5mm-25mm x 1220mm/1500mm x 2440mm/2500mm/6000mm;8mm-80mm x 1500/1800/2000mm/2500 x 6000mm;cut to size according to customers' demands |
Service | OEM, customized processing service, customized fabrication by drawings |
Processing Type | Cutting, bending,stamping,welding,cnc machining |
Cutting Type | Laser cutting;water-jet cutting;flame cutting |
Protection | 1. Inter paper available 2. PVC protecting film available |
Application | Costruction Industry/Kichten Products/Fabrication Industry/Home Decoration |
Export packing | Waterproof paper, and steel strip packed.Standard Export Seaworthy Package.Suit for all kinds of transport,or as required |
Surface finish | Characteristics & Application |
NO.1 | Hot-rolled surface,annealed and pickled,can be used as cold-rolling material,industial tanks and chem i cal devices. |
NO.2D | Cold-rolled, an nealed and pick led with out skinpassing the dull products can be used as automobile parts, building materrials and pipings. |
NO.2B | The surface brightness and flatness of NO.2B is better than NO.2D. Then through a special surfacetreament to improve its mechamical properties, N02B could nearly satisfy comprehensive uses. |
NO.3 | Polished with abra sive belt of grit #100#120,have bet ter bright ness with discontinuous coarse stria, used as in ner and ex ter nal or na ments for building, electrical appliances and kitchen uten sils etc. |
NO.4 | Polished with abrasive belt of grit #150#180, have better brightness with discontinuous coarse stria, but thinner than NO.3, are used as bathtud buildinginner and external ornaments electrical appliances, kitchen utensils and food processing equipment etc. |
HL | Polished with abrasive belt of grit #150-320 on the No.4 finish and has continuous streaks, mainly used as building ornaments, elevators, door of building, frontal plate etc. |
BA | Cold rolled, bright annealed and skin passed, the product has excellent brightness and good reflexivity like mirror, used for lectrical appliances, mirror, kitchen apparatus, or nament materials etc. |
Element | Content (%) |
Iron, Fe | 63.75-71.92 |
Chromium, Cr | 21.0-23.0 |
Nickel, Ni | 4.50-6.50 |
Molybdenum, Mo | 2.50-3.50 |
Manganese, Mn | 2 |
Silicon, Si | 1 |
Nitrogen, N | 0.080-0.20 |
Carbon, C | 0.03 |
Phosphorous, P | 0.03 |
Sulfur, S | 0.02 |
Properties | Metric | Imperial |
Tensile strength at break | 621 MPa | 90000 psi |
Yield strength (@strain 0.200 %) | 448 MPa | 65000 psi |
Elongation at break (in 50 mm) | 25.00% | 25.00% |
Hardness, Brinell | 293 | 293 |
Hardness, Rockwell c | 31 | 31 |
Duplex stainless steels are called "duplex" because they have a two-phase microstructure consisting of ferrite and austenitic stainless steel grains. When a duplex stainless steel is melted, it solidifies from the liquid phase into a fully ferrite structure. When the material cools to room temperature, about half of the ferrite grains transform into austenite grains ("islands"). The result is a microstructure that is approximately 50% austenite and 50% ferrite.
Duplex stainless steels are approximately twice as strong as ordinary austenitic or ferritic stainless steels. As with all stainless steels, corrosion resistance is largely dependent on the composition of the stainless steel. For resistance to chloride pitting and crevice corrosion, its chromium, molybdenum and nitrogen content is most important. Duplex stainless steel grades have a range of corrosion resistance similar to that of austenitic stainless steels, i.e., from type 304 or 316 (e.g., LDX 2101©) to 6% molybdenum (e.g., SAF 2507©) stainless steels.
Hongguan Steel is an ISO 9001:2008 certified company and a leading stockist, supplier and exporter of ASTM A240 duplex stainless steel sheet. Duplex stainless steel coils are cut to your specifications and supplied with a complete set of factory test reports. Custom lengths and widths up to 2000mm are available. Exporting is our specialty! We can supply many hard-to-find grades and non-standard sizes to meet our customers' special requirements. All ASTM duplex steel sheets can be cut to size with the help of our extensive sheet steel product processing expertise.
Our inventory of duplex stainless steel plates includes thicknesses from 6 mm to 80 mm and widths of 1250 mm, 1500 mm, and 2000 mm.
Product | Duplex Stainless Steel Plate |
Surface Finish | BA, 2B, 2D, 4K, 6K, 8K, NO.4, HL, embossed,perforated,water ripple |
Technique | Hot Rolled / Cold Rolled |
Standard | GB JIS ASTM ASME EN |
Steel Grade | 316/316L/316H |
Color | Standard RAL color:red,bule,white,grey,brick,etc. |
Stock Dimension | 0.5mm-4mm x 1220mm/1500mm x 2440mm/2500mm; 5mm-25mm x 1220mm/1500mm x 2440mm/2500mm/6000mm;8mm-80mm x 1500/1800/2000mm/2500 x 6000mm;cut to size according to customers' demands |
Service | OEM, customized processing service, customized fabrication by drawings |
Processing Type | Cutting, bending,stamping,welding,cnc machining |
Cutting Type | Laser cutting;water-jet cutting;flame cutting |
Protection | 1. Inter paper available 2. PVC protecting film available |
Application | Costruction Industry/Kichten Products/Fabrication Industry/Home Decoration |
Export packing | Waterproof paper, and steel strip packed.Standard Export Seaworthy Package.Suit for all kinds of transport,or as required |
Surface finish | Characteristics & Application |
NO.1 | Hot-rolled surface,annealed and pickled,can be used as cold-rolling material,industial tanks and chem i cal devices. |
NO.2D | Cold-rolled, an nealed and pick led with out skinpassing the dull products can be used as automobile parts, building materrials and pipings. |
NO.2B | The surface brightness and flatness of NO.2B is better than NO.2D. Then through a special surfacetreament to improve its mechamical properties, N02B could nearly satisfy comprehensive uses. |
NO.3 | Polished with abra sive belt of grit #100#120,have bet ter bright ness with discontinuous coarse stria, used as in ner and ex ter nal or na ments for building, electrical appliances and kitchen uten sils etc. |
NO.4 | Polished with abrasive belt of grit #150#180, have better brightness with discontinuous coarse stria, but thinner than NO.3, are used as bathtud buildinginner and external ornaments electrical appliances, kitchen utensils and food processing equipment etc. |
HL | Polished with abrasive belt of grit #150-320 on the No.4 finish and has continuous streaks, mainly used as building ornaments, elevators, door of building, frontal plate etc. |
BA | Cold rolled, bright annealed and skin passed, the product has excellent brightness and good reflexivity like mirror, used for lectrical appliances, mirror, kitchen apparatus, or nament materials etc. |
Element | Content (%) |
Iron, Fe | 63.75-71.92 |
Chromium, Cr | 21.0-23.0 |
Nickel, Ni | 4.50-6.50 |
Molybdenum, Mo | 2.50-3.50 |
Manganese, Mn | 2 |
Silicon, Si | 1 |
Nitrogen, N | 0.080-0.20 |
Carbon, C | 0.03 |
Phosphorous, P | 0.03 |
Sulfur, S | 0.02 |
Properties | Metric | Imperial |
Tensile strength at break | 621 MPa | 90000 psi |
Yield strength (@strain 0.200 %) | 448 MPa | 65000 psi |
Elongation at break (in 50 mm) | 25.00% | 25.00% |
Hardness, Brinell | 293 | 293 |
Hardness, Rockwell c | 31 | 31 |