S31803 S32205 S32750 S32950 duplex forged flange
Duplex Steel ASTM A182 Pipe Flanges Specification
Flanges Material Specification
| Specification |
ASTM A182 / ASME SA182 F51 |
| UNS Grade |
UNS S31803, S32205, S2205, S32550, S32750, S32760. |
| Standard |
ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc. |
| Size |
½" to 24″ |
| Dimensions |
ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Class / Pressure |
150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc. |
quivalent Grade of ASME SA182 Duplex Steel Pipe Flanges
| STANDARD |
WERKSTOFF NR. |
UNS |
| Duplex 2205 |
1.4462 |
S31803 / S32205 |
ASTM A182 Duplex Steel 2205 Flange Standards / Types And Pressure Class :
| ASME/ANSI B 16.5 |
Slip on Flange, Welding Neck Flange,Blind Flange, Threaded Flange, Socket Weld Flange,High Hub Blind Flange, Lap Joint Flange, Ring Type Joint Flange |
| PRESSURE CLASS |
150, 300, 400, 600, 900, 1500, 2500 |
| ASME/ANSI B 16.47 |
Welding Neck Flange, Blind Flange [Series A & B] |
| PRESSURE CLASS |
75, 150, 300, 400, 600, 900 |
| ASME/ANSI B 16.36 |
Slip on Flange, Welding Neck Flange, Threaded Flange |
| PRESSURE CLASS |
300, 400, 600, 900, 1500, 2500 |
| BS 4504 SEC 3.1 |
Plate Flange,Welding Neck Flange, Hubbed Slip on Flange, Hubbed Threaded Flange, Lapped Pipe End Flange, Loose Plate Flange, Loose Plate With Weld Neck Flange, Blank Flange |
| PRESSURE CLASS |
PN 2.5 TO PN 40 |
| BS 4504[PART 1] |
Hubbed Slip-On Hubbed Threaded, Plate Flange, Welding Neck Flange, Loose Plate With Weld On Plate Collar, Blank Flange |
| PRESSURE CLASS |
PN 2.5 TO PN 400 |
| BS 1560 BOSS |
Socket Welding Flange, Welding Neck Flange,Slip-On Flange, Blind Flange, Screwed Boss Flange, Lapped Flange |
| PRESSURE CLASS |
150, 300, 400, 600, 900, 1500, 2500 |
| BS10 |
Blind Flange, Welding Neck Flange, Plate Slip-On Flange, Screwed Boss Flange, Slip-On Boss Flange |
| TABLE |
D, E, F, H |
| DIN FLANGES |
DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673 |
| PRESSURE CLASS |
PN 6 TO PN 100 |
Mechanical Properties
| Tensile Strength,min. |
Yield Strength,min. |
Elongation,min. |
Hardness Brinell, max |
| Mpa |
Mpa |
% |
HB |
| 620 |
450 |
25 |
290 |
Tests and Inspection
One tension test shall be made for each heat of ASTM A182 F51 flanges. One set of three Charpy V-notch tests shall be performed for each heat of products. When required by the purchaser, detecting of detrimental phase in the duplex stainless steel shall be conducted in accordance with ASTM A923 or ASTM A1084. Non-destructive tests such as ultrasonic test (UT), magnetic particle inspection (MPI), or liquid penetration examination may be performed upon client's request. There shall be no welding repair and the duplex F51 flanges shall have a workmanlike finish, and the machined surfaces shall have a surface finish not to exceed 250 AA roughness height.
Applications
Duplex stainless steel flanges have found widespread use in a range of industries, particularly the oil and gas, petrochemical, pulp and paper, and pollution control industries. They are commonly used in aqueous, chloride-containing environments and as replacements for austenitic stainless steels that have suffered from either chloride SCC or pitting during service. Generally, duplex stainless steel flanges can be used for the construction of heat exchangers, chemical tanks, reactors, flue gas filters and other pressure equipment. Especially, super duplex grades (S32750 & S32760) are resistant to oxygenated or chlorinated seawater. Flanges made of ASTM A182 F53 or F55 can be used in seawater desalination systems.
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