WN Blind Flange 75# 26Inch - 48Inch Duplex Stainless Steel Flange ASTM A182 F55
1. Key Specifications / Features
Type: F55 Flange
Material: UNS S32760 (F55)
Pressure: 75LBS
Size: 26Inch - 48Inch
Standard: ASME B16.47
Ends: Raised Face
2. Types of Flanges
Flange types
As already described before, the most used flange types ASME B16.5 are: Welding Neck, Slip On, Socket Weld, Lap Joint, Threaded and Blind flange. Below you will find a short description and definition of each type, completed with an detailed image.
Welding Neck flange
Welding Neck Flanges are easy to recognize at the long tapered hub, that goes gradually over to the wall thickness from a pipe or fitting.
This flange type will be welded to a pipe or fitting with a single full penetration, V weld (Buttweld).
DETAILS OF WELDING NECK FLANGE
1. Weld Neck flange 2. Butt Weld
3. Pipe or Fitting
Blind flange
Blind Flanges are manufactured without a bore and used to blank off the ends of piping, Valves and pressure vessel openings.
From the standpoint of internal pressure and bolt loading, blind flanges, particularly in the larger sizes, are the most highly stressed flange types.
However, most of these stresses are bending types near the center, and since there is no standard inside diameter, these flanges are suitable for higher pressure temperature applications.
DETAILS OF BLIND FLANGE
1. Blind flange 2. Stud Bolt 3. Gasket 4. Other flange
3. ANSI B16.47 SER. B CLASS 75 FLANGES
 |  | |
| Series B 75 Weld Neck Flange | Series B 75 Blind Flange | |
| | | |
| | | |
| | | Thickness | | | | | | | Drilling | | | | Weight | |
| Nom Size | OD | Weld Neck | Blind | OD of RF | Dia at Base | Bore | LTH | Dia Bevel | Bolt Circle | Bolt Length | Hole Dia | # of Holes | Weld Neck | Blind |
| | O | C | C | R | X | B | Y | A | | (1) | (2) | | | |
| 26 | 30 | 1.25 | 1.25 | 27.75 | 26.62 | | 2.25 | 26.06 | 28.5 | 4.5 | 0.75 | 36 | 80 | 255 |
| 28 | 32 | 1.25 | 1.25 | 29.75 | 28.62 | 2.38 | 28.06 | 30.5 | 4.5 | 0.75 | 40 | 85 | 290 |
| 30 | 34 | 1.25 | 1.25 | 31.75 | 30.62 | 2.5 | 30.06 | 32.5 | 4.5 | 0.75 | 44 | 90 | 330 |
| 32 | 36 | 1.32 | 1.38 | 33.75 | 32.62 | 2.69 | 32.06 | 34.5 | 4.75 | 0.75 | 48 | 105 | 390 |
| 34 | 38 | 1.32 | 1.44 | 35.75 | 34.62 | 2.82 | 34.06 | 36.5 | 4.75 | 0.75 | 52 | 110 | 430 |
| 36 | 40.69 | 1.38 | 1.61 | 38 | 36.81 | 3.32 | 36.06 | 39.06 | 5.25 | 0.88 | 40 | 145 | 518 |
| 38 | 42.69 | 1.44 | 1.69 | 40 | 38.81 | 3.44 | 38.06 | 41.06 | 5.5 | 0.88 | 40 | 160 | 595 |
| 40 | 44.69 | 1.44 | 1.69 | 42 | 40.81 | 3.57 | 40.06 | 43.06 | 5.5 | 0.88 | 44 | 170 | 760 |
| 42 | 46.69 | 1.5 | 1.82 | 44 | 42.81 | 3.69 | 42.06 | 45.06 | 5.5 | 0.88 | 48 | 185 | 895 |
| 44 | 49.25 | 1.63 | 1.88 | 46.25 | 44.88 | 4.07 | 44.06 | 47.38 | 6 | 1 | 36 | 230 | 1065 |
| 46 | 51.25 | 1.69 | 1.94 | 48.25 | 46.88 | 4.19 | 46.06 | 49.38 | 6.25 | 1 | 40 | 245 | 1185 |
| 48 | 53.25 | 1.75 | 2.07 | 50.25 | 48.88 | 4.32 | 48.06 | 51.38 | 6.5 | 1 | 44 | 270 | 1315 |
| 50 | 55.25 | 1.82 | 2.13 | 52.25 | 50.94 | 4.5 | 50.06 | 53.38 | 6.5 | 1 | 44 | 290 | 1505 |
| 52 | 57.38 | 1.82 | 2.19 | 54.25 | 52.94 | 4.69 | 52.06 | 55.5 | 6.75 | 1 | 48 | 310 | 1665 |
| 54 | 59.38 | 1.88 | 2.32 | 56.25 | 55 | 4.88 | 54.06 | 57.5 | 6.75 | 1 | 48 | 340 | 1840 |
| 56 | 62 | 1.94 | 2.38 | 58.5 | 57.12 | 5.25 | 56.06 | 59.88 | 7.25 | 1.12 | 40 | 400 | 2110 |
| 58 | 64 | 2 | 2.44 | 60.5 | 59.12 | 5.38 | 58.06 | 61.88 | 7.25 | 1.12 | 44 | 430 | 2300 |
| 60 | 66 | 2.13 | 2.57 | 62.5 | 61.12 | 5.63 | 60.06 | 63.88 | 7.75 | 1.12 | 44 | 475 | 2500 |
Dimensions are in inches. Weights are in pounds.
(1)- Bolt lenghts are calculated based on bolting one WN to one Blind.
(2)- Bolt diameter should be 1/8" less than the bolt hole diameter
Note:
Larger sizes as well as intermediate sizes can be furnished.
ANSI B16.47 Series B Class 75 Flange PDF (for printing).
4. Super Duplex Steel F55 (UNS S32760)
Technical Data Sheet
| Chemical Composition Limits |
| Weight% | C | Mn | P | S | Si | Cr | Ni | Mo | N | W |
| Super Duplex F55 | 0.03 max | 1.00 max | 0.03 max | 0.01 max | 1 max | 24-26 | 4.5-6.5 | 3-4 | 0.25 | 0.08-0.20 |
F55 Duplex is the most common super duplex grade it has an enhanced pitting and crevice corrosion resistance compared with the ordinary austenitic or duplex types.
Typical Mechanical Properties
| Alloy | Tensile Strength N/mm² | Yield Strength 0.2% N/mm² | Elongation | Hardness HB |
| Super Duplex F55 | 860 | 720 min | 16 min | 270 max |
5. Specifications
ASTM A182 F55
ASTM A276 F55
ASTM A479 F55
AISI F53
WS 1.4501
X2CrNiMoCuWN25.7.4
AFNOR Z3CND25.06Az
EN10088-3
UNS S32760
ZERON 100
NACE MR01-75
PED 97/23/EC
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75# WN Blind Flange 26 Inch - 48 Inch Duplex Stainless Steel ASTM A182 F55 Images
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