BoYue Steel China Co.,Ltd
BoYue&Tianda Oil Pipe Co., Ltd
BoYue Industry (ShangHai) Co., Ltd
BoYue & BaoSteel Pipeline Equipment Co.,Ltd
BoYue Steel China Co.,Ltd
BoYue&Tianda Oil Pipe Co., Ltd
BoYue Industry (ShangHai) Co., Ltd
BoYue & BaoSteel Pipeline Equipment Co.,Ltd
Product Details:
Payment & Shipping Terms:
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SIZE: | 1/2" - 24" | PROCESS: | FORGED |
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CLASS RATING: | 150#, 300#, 400#, 600#, 900#, 1500#, 2500# | SEALING FACE: | RTJ/FF/RF |
FACE FINISH: | SMOOTH /STOCK FINISH | PRODUCT NAME: | Weld Neck Pipe Flanges |
APPLICATION: | CHEMICAL /OIL/GAS/ENERGY | STANDARD: | DIN,ANSI,ASME |
High Light: | long weld neck flange,stainless steel weld neck flange |
26 - 48" RF FF RTJ 2205 Weld Neck Duplex Stainless Steel Pipe Flanges ASME B16.47 Series B
ASME B16.47(Large Diameter Steel Flanges) is a standard for large diameter steel flanges sized from NPS 26 through NPS 60. The latest version provides dimensions and ratings in both metric and inch units. The ASME B16.47 inherently incorporate MSS SP-44: Steel Pipeline Flanges and API 605: Large Diameter Carbon Steel Flanges. Therefore, the MSS SP-44 flanges are designated as ASME B16.47 Series A flanges, while API 605 flanges are designated as ASME B16.47 Series B flanges within this standard. Materials covered in this standard are as that in ASME B16.5 except for nickel alloys which means they share the same pressure-temperature chart for the selection of flange materials.
2.ASME B16.47 Series B / API 605 Class 600 WN
Norminal Pipe Size | O.D.of Flange, O | Min.Thick-ness of WN Flange, tf | Lenth Through Hub, Y | Diam. of Hub, X | Hub Diam. Top, A | Raised Fase Diam., R | Bore (XS) | Diam of Bolt Circle | No.of Bolt Holes | Diam.of Bolt Hole | Min.Fillet Radius, r1 | Approxi-mate Weight kgs |
26 | 890 | 111.2 | 181 | 698 | 660.4 | 727 | 635.0 | 806.4 | 28 | 44.5 | 13 | 259.28 |
28 | 950 | 115.9 | 190 | 752 | 711.2 | 784 | 685.8 | 863.6 | 28 | 47.6 | 13 | 299.55 |
30 | 1020 | 125.5 | 205 | 806 | 762.0 | 841 | 736.6 | 927.1 | 28 | 50.8 | 13 | 372.00 |
32 | 1085 | 130.2 | 216 | 860 | 812.8 | 895 | 787.4 | 984.2 | 28 | 54.0 | 13 | 432.05 |
34 | 1160 | 141.3 | 233 | 914 | 863.6 | 953 | 838.2 | 1054.1 | 24 | 60.3 | 14 | 542.78 |
36 | 1215 | 146.1 | 243 | 968 | 914.4 | 1010 | 889.0 | 1104.9 | 28 | 60.3 | 14 | 593.49 |
3.DUPLEX Steel 2205:Stainless Steel - Grade 2205 Duplex (UNS S32205)
Chemical Composition
Fe, <0.03% C, 21-23% Cr, 4.5-6.5% Ni, 2.5-3.5% Mo, 0.8-2.0% N, <2% Mn, <1% Si, <0.03% P, <0.02% S
Introduction
Duplex 2205 stainless steel (both ferritic and austenitic) is used extensively in applications that require good corrosion resistance and strength. The S31803 grade stainless steel has undergone a number of modifications resulting in UNS S32205, and was endorsed in the year 1996. This grade offers higher resistance to corrosion.
At temperatures above 300°C, the brittle micro-constituents of this grade undergo precipitation, and at temperatures below -50°C the micro-constituents undergo ductile-to-brittle transition; hence this grade of stainless steel is not suitable for use at these temperatures.
Key Properties
The properties that are mentioned in the below tables pertain to flat rolled products such as plates, sheets and coils of the ASTM A240 or A240M. These may not be uniform across other products such as bars and pipes.
Composition
Table 1 provides the compositional ranges for grade 2205 duplex stainless steel.
Table 1 - Composition ranges for 2205 grade stainless steels
Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N | |
2205 (S31803) |
Min Max |
- 0.030 |
- 2.00 |
- 1.00 |
- 0.030 |
- 0.020 |
21.0 23.0 |
2.5 3.5 |
4.5 6.5 |
0.08 0.20 |
2205 (S32205) |
Min Max |
- 0.030 |
- 2.00 |
- 1.00 |
- 0.030 |
- 0.020 |
22.0 23.0 |
3.0 3.5 |
4.5 6.5 |
0.14 0.20 |
Mechanical Properties
The typical mechanical properties of grade 2205 stainless steels are listed in the table below. Grade S31803 has similar mechanical properties to that of S32205.
Table 2 - Mechanical properties of 2205 grade stainless steels
Grade | Tensile Str (MPa) min |
Yield Strength 0.2% Proof (MPa) min |
Elongation (% in 50mm) min |
Hardness | |
Rockwell C (HR C) | Brinell (HB) | ||||
2205 | 621 | 448 | 25 | 31 max | 293 max |
Physical Properties
The physical properties of grade 2205 stainless steels are tabulated below. Grade S31803 has similar physical properties to that of S32205.
Table 3 – Physical properties of 2205 grade stainless steels
Grade | Density (kg/m3) |
Elastic (GPa) |
Mean Co-eff of Thermal Expansion (μm/m/°C) |
Thermal Conductivity (W/m.K) |
Specific ( J/kg.K) |
Electrical Resistivity (nΩ.m) |
|||
0-100°C | 0-315°C | 0-538°C | at 100°C | at 500°C | |||||
2205 | 782 | 190 | 13.7 | 14.2 | - | 19 | - | 418 | 850 |
Grade Specification Comparison
Table 4 provides the grade comparison for 2205 stainless steels. The values are a comparison of functionally similar materials. Exact equivalents may be obtained from the original specifications.
Table 4 - Grade specification comparisons for 2205 grade stainless steels
Grade | UNS No |
Old British | Euronorm |
Swedish SS |
Japanese JIS |
||
BS | En | No | Name | ||||
2205 | S31803 / S32205 | 318S13 | - | 1.4462 | X2CrNiMoN22-5-3 | 2377 | SUS 329J3L |
Possible Alternative Grades
Given below is a list of possible alternative grades, which may be chosen in place of 2205.
Table 5 - Grade specification comparisons for 2205 grade stainless steels
Grade | Reasons for choosing the grade |
904L | Better formability is needed, with similar corrosion resistance and lower strength. |
UR52N+ | High resistance to corrosion is required, e.g. resistance to higher temperature seawater. |
6%Mo | Higher corrosion resistance is required, but with lower strength and better formability. |
316L | The high corrosion resistance and strength of 2205 are not needed. 316L is lower cost. |
Corrosion Resistance
Grade 2205 stainless steel exhibits excellent corrosion resistance, much higher than that of grade 316. It resists localized corrosion types like intergranular, crevice and pitting. The CPT of this type of stainless steel is around 35°C. This grade is resistant to chloride stress corrosion cracking (SCC) at temperatures of 150°C. Grade 2205 stainless steels are apt replacements to austenitic grades, especially in premature failure environments and marine environments.
Heat Resistance
The high oxidation resistance property of Grade 2205 is marred by its embrittlement above 300°C. This embrittlement can be modified by a full solution annealing treatment. This grade performs well at temperatures below 300°C.
Heat Treatment
The best suited heat treatment for this grade is solution treatment (annealing), between 1020 - 1100°C, followed by rapid cooling. Grade 2205 can be work hardened but cannot be hardened by thermal methods.
Welding
Most standard welding methods suit this grade, except welding without filler metals, which results in excess ferrite. AS 1554.6 pre-qualifies welding for 2205 with 2209 rods or electrodes so that the deposited metal has the right balanced duplex structure.
Adding nitrogen to the shielding gas ensures that adequate austenite is added to the structure. The heat input must be maintained at a low level, and the use of pre or post heat must be avoided. The co-efficient of thermal expansion for this grade is low; hence the distortion and stresses are lesser than that in austenite grades.
Machining
The machinability of this grade is low due to its high strength. The cutting speeds are almost 20% lower than that of grade 304.
Fabrication
The fabrication of this grade is also affected by its strength. Bending and forming of this grade requires equipment with larger capacity. Ductility of grade 2205 is lesser than austenitic grades; therefore, cold heading is not possible on this grade. In order to carry out cold heading operations on this grade, intermediate annealing should be carried out.
Applications
Some of the typical applications of duplex steel grade 2205 are listed below:
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FAQ
Q1: Are you a factory or a trade company?
A1: We are a professional manufacturer for designing and producing of Large-size products.(View Mor)
Q2: Do you make customized products or finished parts?
A2: All parts are custom made only, and in stock, we can produce based on your drawings.
Q3: Will my drawing be safe after you get it?
A3: Yes, we will not release your design to third party unless with your permission.
Q4: What is the MOQ?
A4: Small order is acceptable, but the more, the cheaper.
Q5: How about the samples?
A5: We are happy to make prototype part or sample for clients to ensure quality standard, but it’s charged according to your drawing.
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