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ASME B16.5 ASTM A182 F310 Stainless Steel WNRTJ Flange for
Industries
ASTM A182 F310 is a specification for a high-temperature alloy steel known as
stainless steel grade 310. A blind flange is a type of flange that is used to close the end of a pipe or
vessel. It is solid and does not have a bore or an opening in the
center. Blind flanges are typically used in applications where it
is necessary to terminate a pipeline or create a sealed end. They
are also used for pressure testing or when future expansion of the
piping system may be required.
Blind flanges are typically attached to the pipe or vessel by
welding. The flange is welded to the end of the pipe or vessel,
creating a permanent and secure connection. To ensure a reliable
seal, blind flanges are often used in conjunction with gaskets. The
gasket is placed between the blind flange and the mating flange or
equipment to create a tight and leak-proof seal.
ASTM A182 F310/310S/310H Flange Equivalent Grade
| STANDARD | WERKSTOFF NR. | UNS | JIS | BS | GOST | AFNOR | EN |
| SS 310 | 1.4841 | S31000 | SUS 310 | 310S24 | 20Ch25N20S2 | – | X15CrNi25-20 |
| SS 310S | 1.4845 | S31008 | SUS 310S | 310S16 | 20Ch23N18 | – | X8CrNi25-21 |
| SS 310H | – | S31009 | – | – | – | – | – |
ASTM A182 F310/310S/310H Flange Chemical Composition
| Grade | Ni | P | S | C | Mn | Si | Cr | Mo | Fe |
| SS 310 | 19.00 – 21.00 | 0.020 max | 0.015 max | 0.015 max | 2.0 max | 0.15 max | 24.00 – 26.00 | 0.10 max | 54.7 min |
| SS 310S | 19.00 – 21.00 | 0.045 max | 0.030 max | 0.08 max | 2.0 max | 1.00 max | 24.00 – 26.00 | 0.75 max | 53.095 min |
| SS 310H | 19.00 – 21.00 | 0.045 max | 0.030 max | 0.04 – 0.10 | 2.0 max | 1.00 max | 24.00 – 26.00 | – | 53.885 min |
ASTM A182 SS 310 Flanges Mechanical Properties
| Tensile Strength | Yield Strength (0.2%Offset) | Density | Melting Point | Elongation |
| Psi – 75000 , MPa – 515 | Psi – 30000 , MPa – 205 | 7.9 g/cm3 | 1402 °C (2555 °F) | 40 % |
Flanges Grades
Stainless Steel Flange: F304, F304L, F304H, F316, F316L, F316Ti,
F310, F310S, F321, F321H, F317, F317L, F347, F347H, F904L etc
Duplex Steel Flange: UNS S31803, 2205, S31254 (254SMO)
Super Duplex Steel Flange : UNS S32750, UNS S32760, UNS S32304,
S31500
Carbon Steel Flange: ASTM A105, A105N etc.
Alloy Steel Flange: F1, F11, F22, F5, F9, F91 etc.
Nickel Alloy Flange as below
Monel 400 & K500,
Inconel 600, 601, 617, 625, 690, 718, X-750.
Incolloy 800, 800H, 800HT, 825, 925.
Hastelloy C22, C4, C276, S, C2000, G-30, G-35, X, N, B, B-2, B-3.
Copper Alloys Flanges: Copper, Brass & Gunmetal
Various Kinds of Flanges we can supply as below
1. Slip-on Flanges.
Slip-on Flanges have a lower initial cost than welding neck flanges
because they require less accuracy in cutting pipe to length, and
they provide a greater ease of alignment in assembly. However,
their calculated strength under internal pressure is approximately
2/3's the strength of welding neck flanges, and their life under
fatigue is 1/3 shorter. Slip-on Flanges are limited to 1/2" to 2½"
sizes in 1500lbs standard.
2. Threaded Flanges
Threaded Flanges are used for special applications. They can be
assembled without welding and can be used in extremely high
pressure services--at or near atmospheric pressure--where alloy
steel is essential for strength. Threaded flanges are not suited
for conditions involving temperature or bending stresses, or under
cyclic conditions where leakage through the threads may occur.
3. Weld Neck Flanges
Weld Neck Flanges have a long tapered hub and gradual transition of
thickness in the region of the butt weld joining them to the pipe.
The tapered hub provides important reinforcement to the flange and
resistance to dishing. This type of flange is preferred for severe
service conditions resulting from high pressure, sub-zero or high
temperatures.
4. Blind Flanges
Blind Flanges are used to blank off the ends of piping, valves and
pressure vessel openings. Blind Flanges can handle high stress from
internal pressure and bolt loading since the maximum stresses in
the blind flange are bending stresses at the center.
5. Socket Weld Flanges
Socket Weld Flanges were developed for use on small size high
pressure piping. With an internal weld, socket weld flanges are
stronger and have greater fatigue strength than double welding a
slip-on flange. Smooth bore conditions can be easily attained by
grinding the internal weld. This flange is commonly used in
chemical process piping.
6. Lap Joint Flanges
Lap Joint Flanges are used with lap joint stubs. Lap joint flanges
are commonly used in carbon or low alloy steel piping systems that
need to be frequently dismantled for inspection and cleaning. They
should not be used at any points where severe bending stresses
occur.
Applications
ASTM A182 F310 blind flanges are commonly used in industries such
as petrochemical, chemical, power generation, and oil and gas. They
are suitable for applications involving high temperatures, such as
heat exchangers, boilers, pressure vessels, and piping systems.
