ASTM A789 S32205 Duplex Stainless Steel Pipe 304L Cold Drawn
SS304 SS316 S2507 S2205 254smo Austenitic Alloy and Duplex Stainless Steel Seamless Pipe Ss Pipe
| Product Name | SS304 SS316 S2507 S2205 254smo Austenitic Alloy and Duplex Stainless Steel Seamless Pipe Ss Pipe |
| Fabrication Standard | ASTM A213/269/312/789 |
| Material Grade | TP304 TP316 TP310S SS32750 TP321 TP347L SAF2507 S32205 254SMo |
| Out Diameter | 1/8" - 24" |
| Wall Thickness | 1.25mm - 80mm |
| Length | 6-12M |
| Surface | anealling and pickles surface, polishing |
| Package | by piece, in bundles, with external pvc wrapped, wood crated |
| Minimum Order Quantiy | 3Tons |
| Advantage | 1.regular sizes in stock over 2000 tons for immediate delivery |
| 2.small quantity with factory rate | |
| 3.quality certificate as per EN10204 3.1b issued by manufacturer | |
| 4.expert technical and export/import document consultant and support | |
| 5.on-time response by email |
| Products Specification | OD | WT | Grades | Standards |
| Small size welded pipes&tubes (from continuous lines) |
10mm-406.4mm | 0.5mm-10mm | America: 304,304L,310S,316/316L,317, 317L,321,347,347H,S31803,S32205 China: 06Cr19Ni10,022Cr19Ni10,06Cr17Ni12Mo2, 022Cr17Ni12Mo2,06Cr18Ni11Ti EN: 1.4301,1.4307,1.4401,1.4404,1.4541,1.4462,1.4845 |
ASTM: A249,A269,A312,A358,A688, A778,A789,A790,A928 ASME: B36.10M,B36.19M DIN 17455 EN 10217-7 GB/T 12770,GB/T12771,HG 20537.1,HG 20537.2,HG20537.3,HG 20537.4 |
| Large size welded pipes (from bending lines) |
219mm-2500mm | 3mm-50mm | ||
| U tubes | 16mm-38mm | 0.5mm-2mm |
Duplex stainless steel and ferritic stainless steel and austenitic stainless steel, it will be of austenitic stainless steel has good toughness and weldability and ferritic stainless steel with high strength and resistance to chloride stress corrosion performance together, it is the superior performance so that the duplex stainless steel as the structure of the welding material has developed rapidly, Since the 80's has become and Martensite type, austenite type and ferritin type stainless steel parallel a steel class. Duplex stainless steel has the following performance characteristics:
(1) Molybdenum duplex stainless steel has good chloride stress corrosion resistance under low stress. Generally 18-8 austenitic stainless steel in 600C above neutral chloride solution is prone to stress corrosion fracture, in trace chloride and hydrogen sulfide industrial medium with this kind of stainless steel heat exchanger, evaporator and other equipment have a tendency to produce stress corrosion fracture, and dual-phase stainless steel has good resistance.
(2) Molybdenum duplex stainless steel has good corrosion resistance. The critical pitting potential of duplex stainless steel is similar to that of austenitic stainless steel when PRE=Cr%+3.3×Mo%+16×N%. The corrosion resistance of duplex stainless steel and austenitic stainless steel is similar to AISI 316L. The resistance to pitting and crevice corrosion of high Chromium duplex stainless steel containing 25%Cr, especially high chromium duplex stainless steel containing nitrogen, exceeds AISI 316L.
(3) Has good corrosion resistance fatigue and wear corrosion performance. In some corrosive medium conditions, suitable for the production of pumps, valves and other power equipment.
(4) Good comprehensive mechanical properties. With high strength and fatigue strength, the yield strength is twice that of 18-8 austenitic stainless steel. The elongation of solid solution state reaches 25%, and the toughness value AK (V-notch) is above 100J.
(5) good weldability, small hot crack tendency, general welding without preheating, welding without heat treatment, and 18-8 austenitic stainless steel or carbon steel and other dissimilar welding.
(6) Dual-phase stainless steel with low chromium (18%Cr) thermal processing temperature range is wider than 18-8 austenitic stainless steel, small resistance, without forging, direct rolling production plate. Duplex stainless steel with high chromium (25%Cr) is slightly more difficult to hot process than austenitic stainless steel and can be used to produce plate, tube and wire products.
(7) Cold processing than 18-8 austenitic stainless steel work hardening effect, in the tube, plate bearing deformation early, need to apply greater stress to deformation.
(8) compared with austenitic stainless steel, thermal conductivity is large, linear expansion coefficient is small, suitable for equipment lining and production of composite plate. Also suitable for the production of heat exchanger tube core, heat transfer efficiency is higher than austenitic stainless steel.
(9) There are still various brittleness tendencies of high chromium ferritic stainless steel, which should not be used in working conditions higher than 3000C. The lower the chromium content in duplex stainless steel, the less the harm of σ and other brittle phases.
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