Mill test aisi 2205 stainless steel black bar with CE certificate
USD $2,500 - $3,000 /Piece
Min.Order:1 Piece
Wuxi Chengchang Special Steel Co., Ltd.
Mill test aisi 2205 stainless steel black bar with CE certificate
GENERAL PROPERTIES
The AL 2205 (UNS S31803) alloy is a nitrogenenhanced duplex stainless steel alloy. The nitrogen serves to significantly improve the corrosion resistance of the alloy; especially in the welded condition. Earlier duplex alloys have had moderate resistance to general corrosion and chloride stress corrosion cracking, but suffered a substantial loss of properties when used in the as-welded condition. To impart the metallurgical benefits of nitrogen to both improved corrosion performance and as-welded properties, the AL 2205 alloy is produced to a 0.15% minimum nitrogen content compared to the ASTM range of 0.08-0.20%. The minimum Cr, Mo and Ni contents of AL 2205 alloy (22.0, 3.1 and 5.5% respectively) are all above the mid range of the ASTM composition specification. The typical high Cr, Mo and Ni contents of AL 2205 alloy give it a high PREN (Pitting Resistance Equivalent) of 35.8, further enhancing its corrosion resistance.
When heat-treated properly, the nominal 22% chromium, 5.5% nickel, 3% molybdenum, and 0.16% nitrogen in the AL 2205 alloy produces a microstructure that consists of a nearly equal mixture of austenite and ferrite phases as shown in the photomicrograph above right. The microstructure and composition of the AL 2205 alloy provides corrosion resistance to many environments that is superior to Types 316 or 317, and a yield strength that is more than double that of conventional austenitic stainless steels.
The microstructure and phase balance of AL 2205 alloy have been designed to facilitate the production of pipe and tube products. All AL 2205 alloy is metallographically examined to ensure that the as-shipped product is essentially free from the presence of detrimental precipitate phases such as sigma.
The AL 2205 alloy is the most widely used of the duplex stainless steels and is often used in the form of welded pipe or tubular components. The alloy has also been applied as a formed and welded sheet product in environments where resistance to general corrosion and chloride stress corrosion cracking is important.
CHEMICAL COMPOSITION
Element | Typical | ASTM Specification |
C | 0.02 | 0.030 Maximum |
Mn | 0.7 | 2.0 Maximum |
P | 0.025 | 0.030 Maximum |
S | 0.001 | 0.020 Maximum |
Si | 0.40 | 1.0 Maximum |
Cr | 22.4 | 21.0/23.0 |
Ni | 5.8 | 4.5/6.5 |
Mo | 3.3 | 2.5/3.5 |
N | 0.16 | 0.08/.20 |
Fe | Balance | Balance |
STANDARD:
ASTM .............. S31803 ,2205
EURONORM ....X2CrNiMoN22-5-3,1.4462
JIS ...................SUS329J3L
ASTM SPECIFICATION COVERAGE
Product Form | ASTM Specification | ASME Specification |
Bar | A 276 A 479 | _ |
Sheet, Strip, Plate | A 240 | SA 240 |
Pipe (Welded and Seamless) | A 790 | SA 790 |
Tubing (Welded and Seamless) | A 789 | SA 789 |
PHYSICAL PROPERTIES
Density
0.285 Ib/in3 (7880 kg/m3)
Specific Heat at 68-212°F (20-100°C)
0.10 BTU/lb °F (0.42 kJ/kg°K)
Thermal Conductivity at 68-212°F (20-100°C)
11 BTU-ft/hr-ft2- °F (19 W/m°K)
Thermal Coefficient of Expansion at 68-212°F
(20-100°C)
7.6 x 10-6/°F (13.7 x 10-6/°C)
Modulus of Elasticity in Tension
27.5 x 106 psi (190 GPa)
Magnetic Permeability
Ferromagnetic
CORROSION RESISTANCE
Chloride Stress Corrosion Cracking
Resistance
The nickel-free ferritic steels are essentially immune to chloride stress corrosion cracking even in the extremely severe boiling 42% magnesium chloride test. Nickel-containing austenitic stainless steels, on the other hand, are highly susceptible to stress corrosion cracking. The resistance of austenitic and ferritic stainless steels to chloride stress corrosion cracking has been correlated to the nickel content of the alloys.
Duplex alloys behave in a manner that is a combination of the characteristics of the austenitic and ferritic phases that make up the alloy, as shown by the data below. Certain elements tend to partition into one of the two primary phases in duplex alloys. For example, the nickel content of the ferrite phase will be lower than that of the austenite phase relative to the bulk composition. Consequently, the ferrite phase in AL 2205 alloy will provide resistance to chloride stress corrosion cracking, making it substantially better than the standard 300 series austenitic stainless steels.
| Stress Corrosion Cracking Performance | ||
Alloy | Boiling 42% MgCl2 | Boiling 33% LiCl | Boiling 26% NaCl |
Austenitic Type 304L (8% nickel) ( | Failed (20 hours) | Failed (96 hours) | Failed (850 hours) |
Ferritic Type 439 (0.1% nickel) | Passed (2000 hours) | Passed (2000 hours) | Passed (1000 hours) |
Duplex AL 2205 (5% nickel) | Failed (89 hours) | Passed (1000 hours) | Passed (1000 hours) |
Duplex AL 2205 (welded) | Failed (89 hours) | Passed (1000 hours) | Passed (1000 hours) |
Pitting and Crevice Corrosion Resistance
A relative ranking of the resistance to chloride-ion pitting and crevice corrosion can be made by using ASTM procedure G-48 (10% FeCl3¥6H2O) and increasing the test temperature until the onset of crevice corrosion attack is observed. The temperature at which attack is first observed is called the critical crevice corrosion temperature and can be used as a relative measure of crevice corrosion resistance. The critical crevice corrosion temperature criterion is useful for ranking alloys, but does not necessarily indicate an absolute limiting temperature for the use of a particular alloy in chloride-bearing solutions. The data provided below for annealed plate indicate the superior resistance of the AL 2205 alloy to chloride- ion crevice corrosion compared to Type 316 and Type 317 stainless steels.
General Corrosion Resistance
The AL 2205 alloy is resistant to dilute reducing acids and moderate to high concentrations of oxidizing acids. The alloy is resistant to low concentrations of organic acids, but should be used with caution in higher concentrations at elevated temperatures. The following table compares the corrosion resistance of base metal and welded samples of Type 316 and AL 2205 alloy in various boiling acids. The corrosion rates that follow are given in units of mils per year (MPY) and millimeters per annum (mm/a).
Intergranular Corrosion
Tests of AL 2205 alloy in the welded condition indicate that it resists intergranular corrosion during the 16% sulfuric acid-copper sulfate test (ASTM A 262 Practice E).
MECHANICAL PROPERTIES
Mechanical Properties at Room Temperature
Typical mechanical properties for annealed AL 2205alloy material at room temperature are listed below:
Property | ASTM and ASME Minimum Properties | Plate Sections (>3/16") | Sheet and Strip Sections (<3/16") |
Yield Strength (0.2% Offset) | 65,000 psi 450 MPa | 75,000 psi 515 Mpa | 85,000 psi 585 MPa |
Ultimate Tensile Strength | 90,000 psi 620 MPa | 110,000 psi 760 MPa | 125,000 psi 860 MPa |
% Elongation (in 2 inches) | 25 | 35 | 30 |
Hardness | 32 R 290 Brinell (Maximum) | 235 Brinell | 27 R |
Tensile Properties at Elevated Temperature
The AL 2205 alloy has been approved for use under Section Vlll, Division 1 of the ASME Boiler and Pressure Vessel Code (listed as S31803) to a maximum temperature of 600°F (316°C). The strength of the AL 2205 alloy is indicated by the maximum allowable stress values given in the ASME Boiler and Pressure Vessel Code reproduced below, and compared to values for Type 316 stainless steel. Such relatively high maximum allowable stress values can be used advantageously in process unit design. The stress values that are given below apply to plate, sheet, strip, seamless tubing and pipe products. A factor of 0.85 is applied when considering welded tubing or pipe products.
Impact Properties
Duplex AL 2205 alloy may undergo a transition from a ductile mode of fracture at higher temperatures to a brittle mode of fracture at lower temperatures when subjected to impact loading. The ductile-to-brittle transition temperature can be substantially increased by exposing the alloy for extended periods of time at temperatures in the range from 650 to 1000°F (343-538°C). Improper welding procedures, such as welding with straight chromium stainless steel filler metals, will increase the susceptibility of the weld to brittle impact behavior. The data presented below are from tests conducted on 3/8 inch (0.95 cm) thick AL 2205 unwelded plate samples in the annealed and rapidly cooled condition.
Effect of Elevated Temperature on Mechanical Properties
An upper temperature limit of 600°F (316°C) has been placed on the use of AL 2205 alloy in the ASME Boiler and Pressure Vessel Code due to what is known as Ò885°F (475°C) Embrittlement.Ó This means that the ferrite phase of AL 2205 alloy may be embrittled after exposure to temperatures from 650 to 1000°F (343-538°C). The 885°F (475°C) embrittlement is reversible by heat treating the alloy at a temperature above 1100°F (593°C). However, another embrittling range exists from about 1000°F (538°C) to 1830°F (1000°C) due to the precipitation of excess phases that are detrimental to both impact and corrosion properties. A full anneal and rapid cooling treatment is required to eliminate the latter form of embrittlement and is also the preferred manner of relieving forming stresses and 885°F (475°C) embrittlement.
Welding
The AL 2205 alloy is designed to contain approximately equal amounts of ferrite and austenite in the annealed strip or plate product. Autogenous welding will increase the amount of ferrite present in the weldment and adjacent areas of the base metal. Subsequent annealing will tend to restore the balance of phases in the base metal. However, an annealed autogenous weld mcan be expected to contain slightly more ferrite than the corresponding base metal. A fully ferritic weld should be avoided.
Matching filler metals are commercially available to weld the AL 2205 alloy. Such filler metals (AWS E2209) contain more nickel than the base metal in order to produce a phase balance within the weld that is approximately the same as the base metal. When AL 2205 alloy is welded to different metals, a filler metal should be chosen that contains a quantity of austenite forming elements that is sufficient to produce a partially or fully austenitic weld. The large, fully ferritic grains that may form in a weld made from ferritic fillers may lower impact ductility at room temperature.
Heat Treatment
The AL 2205 alloy should be annealed between 1870 and 2010°F (1020-1100°C) and cooled quickly. Annealing near 2010°F will increase the amount of ferrite present in the microstructure compared to that resulting from annealing near 1870°F. The graph below provides additional information.
Forming
The AL 2205 alloy can be successfully cold-bent and expanded. Greater loads will be required to deform the alloy because of the higher strength of this duplex alloy in comparison to conventional austenitic materials. The ferrite phase within the duplex structure of the AL 2205 alloy results in an elongation that is less than that of a comparable austenitic stainless steel. The alloy should be bent to more generous bend radii than fully austenitic materials.
Furthermore, the degree to which AL 2205 alloy tubing can be expanded into tubesheets is restricted by the lower tensile elongation of the material in comparison to conventional austenitic materials. The strength of the AL 2205 alloy is high relative to most tube sheet materials. Consequently, care must be taken to produce tight roller expanded joints between AL 2205 alloy tubing and other tube sheet materials.
Heavily cold-bent sections should be fully annealed (not just stress-relieved) after bending whenever there is the potential for stress corrosion cracking in the service environment. Stress relief heat treatments in the 600 to 1700°F (316-927°C) range adversely affect the properties of the alloy and should not be considered.
Other products we can supply as below:
Product Name | Stainless steel sheet/plate;stainless steel coil; Stainless steel pipe;stainless steel flat bar; Hexagonal bar; Stainless steel angle bar and so on |
Material Grade | 201 202 304 304L 316 316L 321 309S310S 430 431 440 440B 440C 347 15-5PH 17-4PH 17-7PH S31803 S32205 S32750 S32760 S32550 and so on. |
Size | Sheet:thickess from 0.4-120mm,width from 1000-1500mm,length from 1000-6000mm Coil: thickness from 0.4-6mm, width:from 1000-1500mm Pipe:OD from2-630mm Wt:0.3-50mm Angle bar:from 20*20*3-100*100*10mm Flat bar:from thickess from 3-12mm ,width from 20-150mm ,length from 1000-6000mm Hexagonal bar:8-130mm |
Surface finish | Sheet: 2B NO.1 BA NO.4 HL 8K ... Coil:2B NO.1 Pipe:2B Polished Brushed Mirror Mill Pickling Angle bar:Mill Pickling HL Flat bar:Mill Pickling HL Black Bright... Hexagonal Bar:Mill Pickling HL Black Bright.. |
1.Free sample is available.
2.Mill Test Certificate is supplied with shipment.
3.The third party inspection is accepted.
Remark:
Min Order Quantity: 1 Ton/Tons
Supply Ability: 500 Ton/Tons per Month
Port: Jiangyin / JiangSu
Payment Terms: L/C,T/T,Western Union,MoneyGram,Cash
Inner: bundles packing, plastic bag cover every pipe
Outer: according to customers'requirements
Payment Term: 30%T/T for deposit,70% for balance
Delivery Time: about 7-15 days after the confirmation of the deposit
Other service: Other specifications can be manufactured according to customers' requirements
Wuxi ChengChang Special Steel Co.,Ltd belong to JiangYin Chengchang Special Steel Co., Ltd. ,the sales branch located in China's largest stainless steel distribution center "Wuxi stainless steel market," mainly responsible for the sale stainless steel ingot, stainless steel rod and other steel profiles etc., and also engaged in stainless steel sheet, stainless steel pipe and other stainless steel products.
We have advanced stainless steel production equipment: 25 tons AOD refining furnace 1 set, 2 sets of 18 tons electric furnace. Having an annual output of 60,000 tons of stainless steel bar, stainless steel ingot capacity. The company has a sound product testing equipment: US Niton portable spectrometer, Germany OBLF desktop spectrometer, as well as supporting the physical, chemical analysis facilities. We passed the ISO9001: 2000 quality management system certification in 2007.
The main production and sales of stainless steel bar, stainless steel ingot, stainless steel profiles (angle, channel, square steel, flat), and also engaged in a stainless steel tube, stainless steel plate and stainless steel flange. Materials include 304,304L, 316,316L, 303,630,2205,2520,347 etc., including a variety of duplex stainless steel, precipitation hardening stainless steel, high temperature steel, corrosion resistant steel, austenite and martensite stainless steel (stainless iron).
Packaging Detailes | Export standard seaworthy packaging(strong woden box,woven cloth or as your requirement .Bar &forgings,Pipes &pipe fittings, Sheet,Strip: Packed in Nylon Poly cloth first,then woden box if needed.) or as your requirments.For your refer about container size : 20 ft GP:5.8m(length)x 2.13m(width)x 2.18m(high) about 24-26 CBM 40 ft GP:11.8m(length)x 2.13m(width)x 2.72m(high)about 68 CBM |
Shipping Detailes | If we have stocks for your demanded size, we can deliver within 3 days;For customised sizes and in quantity over100 tons (Some materials are allowed MOQ 50 kg),we can guarantee delivery within 3 weeks. or negotiation. |
1.Q:Are you a factory or trading company?
A:We are a factory.
2.Q:Where is your factory located? How can I visit there?
A:Our factory is located in Jiangyin City, Jiangsu Province, China, about 2 hours driving from Shanghai.All our clients from home or abroad are warmly welcome to visit us!
3.Q:Can I get some samples?
A: Yes,we are honored to offer you samples.
4.Q:How does your factory do regarding quality control?
A:"Quality is priority. RS people always attach great importance to quality controlling from the very beginning to the very end. Our factory has gained BV, SGS authentication. We guarantee the goods out from our factory 100% qualified.
Why choose us?
Quality:we are factory ,and already passed ISO 9001 Quality System in 2007 ,we can guarantee our products 100% qualified.
Advantage:fast delivery ,cause we always have stock for normal size and grade stainless steel products.We ensure shipment on time.
Service:we will give you first-level service,think about customers think, worry about customers request, customers request is our power.We will try our best to solve all problems for our customers,hope we can establish a long term cooperation.