UNS S31803 Duplex-manufacture,factory,supplier from China

S31803 Plate S31803 Plate  is a standard duplex grade duplex stainless steel alloy. It has the microstructure of equal austenite to ferrite ratio. SA 240 UNS S31803 Sheet is a combination of reliable mechanical stability, ductility and good corrosion resistance properties.

Duplex Steel S31803 Round Bars have high-stress corrosion cracking resistance in halide containing environments and outstanding resistance to erosion corrosion and corrosion fatigue.

s31803 Duplex stainless steel is a kind of  Medium alloy stainless steel,it's PREN value is 32-33, and its corrosion resistance is between AISI 316L and 6%Mo+N austenitic stainless steel.Duplex stainless steel has the characteristics of both austenitic stainless steel and ferritic stainless steel because it has austenite + ferrite dual-phase structure, and the content of the two phase structures is basically the same. The yield strength can reach 400Mpa ~ 550MPa, which is twice that of ordinary austenitic stainless steel.

SUS 312L UNS S31254 Duplex SS Sheet Stainless Steel Coils for SaleProducts Description         Product Namestainless steel coilsMaterial（DIN）1.4301/1.4306/1.4541/1.4401/1.4404/1.4571/1.4539/1.4410/1.4833/1.4845Thickness0.3-100mmWidth600mm, 1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etcLength2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etcSurface2B, BA, NO.4, Mirror, Hairline, etcStandardJIS, AISI, ASTM, GB, DIN, EN, AISI, ASTM, DIN, EN, GB, JISGrade201/304/304L/321/316/316L/310S/904L/309S/316Ti/317L/2205/2507, etc.TechniqueCold Rolled,Hot RolledCertific

We make use of hundred percent pure raw materials for manufacturing Duplex S31803 Coils that results in the production of high quality of goods. Duplex 31803 Coils has a huge number of applications in various industries. These coils are used in the manufacturing of the piping and tubing in the oils and gas exploration industries and are also used in the manufacturing of food processing equipment.

ASTM A790 refers to stainless steel seamless and welded pipes (UNS S31803, UNS S32205, UNS S32750, UNS S32760). These tubes can be easily cut and molded by bending, stretching, extrusion, and other common procedures. Consideration should be given to its high intensity and the resulting larger springbok.

2507 (UNS S32750) duplex stainless steel has strong strength and corrosion resistance, which is mainly used in chemical processing, petrochemical industry and subsea equipment. It has strong chloride corrosion resistance, high thermal conductivity and low coefficient of thermal expansion. The high content of chromium, molybdenum and nitrogen makes it highly resistant to patchy, crevice and general corrosion.

Type 301 is an austenitic chromium-nickel stainless steel that is available in the annealed and cold worked conditions. In the annealed condition, Type 301 offers the highest level of stretch formability of any stainless steel and in the heavily cold worked condition offers the highest strength level of any 300 series stainless steel. Type 301 is non-magnetic in the annealed condition but becomes magnetic as a result of cold working.Type 301 is corrosion resistant in many environments, but the corrosion properties are less than that of 304/304L stainless steel.

Super Duplex Steel UNS S32760 Welded Pipes are multi-purpose and possess good weldability, used widely in the offshore and marine industry for their acid corrosion resistance.S32760 Super Duplex Stainless Steel Pipes are highly alloyed with different metals and have a greater mechanical strength.

S32760 Super Duplex Forged Bar can be produced by following specification standard ASTM A276.Product Parameter：Stainless Steel barMaterial200 series: 201,202,202Cu,204Cu,300 series: 301, 303/Cu, 304/L/H, 304Cu, 305, 309/S, 310/S, 316/L/H/Ti, 321/H, 347/H, 330,400 series: 409/L, 410, 416/F, 420/F, 430, 431, 440C, 441, 444, 446,600 series: 13-8ph, 15-5ph, 17-4ph, 17-7ph(630,631), 660A/B/C/D,Duplex: 2205(UNSS31803/S32205), 2507(UNSS32750), UNSS32760, 2304, LDX2101.

2507 Super Duplex Stainless Steel BarsAlloy 2507 is a duplex stainless steel, a super duplex stainless steel composed of 25% chromium, 4% molybdenum and 7% nickel.Main components: 25Cr-7Ni-4Mo-0.27N2507 is a ferritic-austenitic (duplex) stainless steel, also called duplex stainless steel, which has excellent resistance to pitting, crevice corrosion and uniform corrosion.Application areas: pulp and paper industry, seawater desalination, flue gas purification, heat exchangers, chemical tanker piping systems, seawater systems, etc.Product Parameter：Equivalent MaterialsSAF2507, EN 1.4410, UNS S327

Alloy K-500 (UNS N05500) is a nickel-copper alloy.

Duplex Steel UNS S32205 Round Bars have a long service life and low maintenance cost and hence can be used in various industrial applications like oil and gas exploration and processing equipment, chemical and petrochemical processing equipment, high chloride and marine environments, power generation, specialty chemicals, gas processing, seawater equipment, pulp and paper digesters, etc.Product Parameter：Stainless Steel barMaterial200 series: 201,202,202Cu,204Cu,300 series: 301, 303/Cu, 304/L/H, 304Cu, 305, 309/S, 310/S, 316/L/H/Ti, 321/H, 347/H, 330,400 series: 409/L, 410, 416/F, 420/F, 430,

UNS S32760 is able to compete strongly with the 6% molybdenum “super austenitic” grades in some applications, as it has fewer amounts of Mo and Ni which drive up the base cost of the material. Although, 32760 has lower amounts when compared to “6% Moly” grades it still has higher contents of Cr, Ni, and Mo when referring to other alloys, these elements improve the intergranular and pitting corrosion resistance of the material.

Well known for its high impact strength, UNS S32760 displays no ductile-brittle transition but only a slight reduction in impact energy as temperature decreases.

Duplex stainless steel tube has good welding performance, compared with ferritic stainless steel and austenitic stainless steel, it is not like the welding heat affected zone of ferritic stainless steel, because of the severe coarsing grain and the plastic toughness is greatly reduced, nor like austenitic stainless steel, is more sensitive to welding hot crack.Because of its special advantages, duplex stainless steel is widely used in petrochemical equipment, seawater and wastewater treatment equipment, oil and gas pipelines, papermaking machinery and other industrial fields.

254SMO is an austenitic stainless steel.  Because of its high molybdenum content, it has very high resistance to spot corrosion and crevice corrosion. Main ingredients:254 smo carbon (C) 0.02 or less, manganese (Mn) of 1.00 or less, nickel (Ni) 17.5 ~ 18.5, silicon (Si) of 0.8 or less phosphorus (P) of 0.03 or less, sulfur (S) of 0.01 or less, chromium (Cr) 19.5 ~ 20.5, copper (Cu) 0.5 ~ 1.0, molybdenum (Mo) 6.0 ~ 6.5  National standards: UNS S31254, DIN/EN 1.4547, ASTM A280, ASME SA-240  Welding material: ERNiCrMo-3 wire, ENiCrMo-3 electrode Product Name254smo st

Astm A790 Super Duplex 2507 Stainless Steel PipesProduct DescriptionThe chemical composition is :carbon C≤0.15manganese Mn≤1.25silicon Si≤1.00chromium Cr12.0~14.0nickel Ni≤0.60%phosphorus P≤0.06sulfur S≤0.15Molybdenum≤0.60%Product DescriptionProductAstm A790 Super Duplex 2507 Stainless Steel PipesSurface FinishBA, 2B, 2D, 4K, 6K, 8K, NO.4, HL, EmbossedTechniqueHot Rolled / Cold RolledStandardGB JIS ASTM ASME ENSteel Grade200 series: 201 202300 series: 301 304 304L 309 310 310s 316 316L 321400 series: 409 410 410S 420 430ColorStandard RAL color:red,bule,white,grey,brick,etc.Stock Dimension0.5mm

The Duplex 2205 Stainless Steel Plate is 3% molybdenum, 22% chromium, 5-6% nickel alloyed stainless steel plate, with high-stress resistance characteristics, high strength, and excellent resistance to impact.Product ShowProducts DescriptionProduct Namestainless steel plateThickness0.1~150mmWidth600mm,1000mm,1219mm,1500mm,1800mm,2000mm,2500mm, 3000mm, 3500mm,etcLength2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etcStandardASTM GB/T JIS4 ASME BS DIN ENMaterial 200 series: 201/202  300 series: 301/304/304L/305/309S/310S/316/316L/316LN/316Ti/317/317L/347/347H 400 series: 405/40

Duplex 2205 PlateDuplex 2205 Plate is a two-phase, ferritic, austenitic 22% chromium, 3% molybdenum, 5 to 6% nickel alloyed stainless steel. Duplex 2205 Plate is the most broadly used duplex stainless metal grade and is characterised via excessive yield strength, double that of the standard austenitic stainless steel grades.

2304 Duplex Stainless Steel PlateDuplex 2304 is a 23% chromium, 4% nickel, molybdenum-free duplex stainless metal whose shape is a stability of ferritic and austenitic. It has common corrosion resistance comparable or higher than Alloys 304L and 316L however with yield energy almost double that of austenitic stainless steels.

The main feature is that the yield strength can reach 400-550mpa, which is 2 times of ordinary stainless steel, so it can save material and reduce the cost of equipment manufacturing.

Duplex 2304 is a 23% chromium, 4% nickel, molybdenum-free duplex stainless steel whose structure is a balance of ferritic and austenitic.

AISI 329 Duplex Stainless Steel Plate belongs to a specification of duplex steel grades.