The Stainless Steel 316 Flanges are high grade pipes connecting fittings designed with high corrosion resistance, strength and durability in the highly aggressive industrial conditions. The main distinguishing feature of SS 316 is the 2–3% Molybdenum content giving it the highest chlorides, acid and marine resistance compared to other stainless steel alloys. These flanges are manufactured to ASTM A182 / ASME SA182 F316 standards and to the same grade UNS S31600 / DIN 1.4401 and are commonly used in chemical processing, pharmaceutical, marine, food processing, and oil and gas applications. In WNRF, SORF, BLRF, RTJ, Orifice, and others, pressure classes 150 to 2500, 1/2 -48 sizes. Amardeep Steel is a reliable SS 316 Flange Manufacturer and Supplier in India and we produce certified flanges of the largest size that are made with utmost precision and manufactured to the highest standards in quality and dimension.
Specifications of Stainless Steel 316 Flanges
| Category | Specification Details |
|---|---|
| Material Specifications | ASTM A182 / ASME SA182 |
| Pressure Ratings (Class) | 150#, 300#, 600#, 900#, 1500#, 2500# |
| Pressure Ratings (PN) | PN6, PN10, PN16, PN25, PN40, PN64, etc. |
| Size Range | 1/2″ (15 NB) to 48″ (1200 NB) |
| Dimensional Standards | ANSI/ASME B16.5, B16.47 (Series A & B), B16.48, BS4504, BS 10, EN-1092, DIN, etc. |
| Standard Flange Types | ANSI, ASME, BS, DIN, EN, etc. |
Chemical Composition of SS 316 Flanges
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | Fe |
|---|---|---|---|---|---|---|---|---|---|
| SS 316 | 0.08 max | 2.0 max | 1.0 max | 0.045 max | 0.030 max | 16.0 – 18.0 | 2.0 – 3.0 | 11.0 – 14.0 | 67.845 min |
A182 F316 Flanges Mechanical Properties
| Density | Melting Point | Tensile Strength | Yield Strength (0.2% Offset) | Elongation |
|---|---|---|---|---|
| 8.0 g/cm³ | 1400 °C (2550 °F) | 75,000 Psi (515 MPa) | 30,000 Psi (205 MPa) | 35% |
Equivalent Grades of Stainless Steel 316 (DIN 1.4401) Flanges
| Grade | Werkstoff Nr. | UNS | JIS | BS | AFNOR | EN |
|---|---|---|---|---|---|---|
| SS 316 | 1.4401 / 1.4436 | S31600 | SUS 316 | 316S31 / 316S33 | Z7CND17–11–02 | X5CrNiMo17-12-2 / X3CrNiMo17-13-3 |
Types of Stainless Steel 316 Flanges
A182 F316 Spade Flanges & Spacer Flanges, 300LB, 1 1/2
A182 F316 WN Flange, 10 Inch,RF, 600 LB, SCH80S
ASTM A182 F316 Slip-on Flange,ANSI B16.5, Class 150, 12 Inch,RF
ASTM A182 F316 Spacer RingBlind Flange, Class 300, 2 Inch
ASTM A182 F316 SW Flanges,Class 150, 2 Inch, SCH 40, RF
ASTM A182 F316 Weld NeckFlange, ANSI B16.5, Class 900, 14"
Dual Rated ASTM A182 F316Blind Flange, RF, 150LB
Socket Weld Flange, 2 1_2 Inch,150#, A182 F316
Spacer Ring Blind Flange, PDO,ASTM A182 F316, 300 LB, 6 Inch
SS Forged WN Flange, ASTMA182 F316, 2 1_2 Inch, SCH 805,B16.5
SS Orifice Flange, A182 F316, 3In, Class 300, SCH 40, Raised Face
Stainless Steel Slip On Flange,A182 F316_F316, 18 Inch, CL150, RF
SS 316 Flanges Weight Chart (Class 150, ANSI B16.5)
| Pipe Size (NPS) | O.D. (O) | Thk (C) | Hub Dia (X) | RF Dia (G) | Hub Len (Y) | Bolt Circle (BC) | Hole Dia (BH) | No. of Bolts | Bolt Size (in) | Weight (kg) |
|---|---|---|---|---|---|---|---|---|---|---|
| 1/2″ | 89.0 | 11.2 | 30.2 | 35.1 | 15.7 | 60.5 | 15.8 | 4 | 1/2″ | 0.4 |
| 3/4″ | 98.5 | 12.7 | 38.1 | 42.9 | 15.7 | 69.9 | 15.8 | 4 | 1/2″ | 0.7 |
| 1″ | 108.0 | 14.2 | 49.3 | 50.8 | 17.5 | 79.3 | 15.8 | 4 | 1/2″ | 0.8 |
| 1-1/4″ | 117.5 | 15.7 | 58.7 | 63.5 | 20.6 | 88.9 | 15.8 | 4 | 1/2″ | 1.2 |
| 1-1/2″ | 127.0 | 17.5 | 65.0 | 73.2 | 22.4 | 98.6 | 15.8 | 4 | 1/2″ | 1.5 |
| 2″ | 152.5 | 19.1 | 77.7 | 91.9 | 25.4 | 120.7 | 19.1 | 4 | 5/8″ | 2.3 |
| 2-1/2″ | 178.0 | 22.4 | 90.4 | 104.6 | 28.4 | 139.7 | 19.1 | 4 | 5/8″ | 3.7 |
| 3″ | 190.5 | 23.9 | 108.0 | 127.0 | 30.2 | 152.4 | 19.1 | 4 | 5/8″ | 4.1 |
| 3-1/2″ | 216.0 | 23.9 | 122.2 | 139.7 | 31.8 | 177.8 | 19.1 | 8 | 5/8″ | 5.1 |
| 4″ | 228.5 | 23.9 | 134.9 | 157.2 | 33.3 | 190.5 | 19.1 | 8 | 5/8″ | 5.9 |
| 5″ | 254.0 | 23.9 | 163.6 | 185.7 | 36.6 | 215.9 | 22.4 | 8 | 3/4″ | 7.0 |
| 6″ | 279.5 | 25.4 | 192.0 | 215.9 | 39.6 | 241.3 | 22.4 | 8 | 3/4″ | 8.4 |
| 8″ | 343.0 | 28.4 | 246.1 | 269.7 | 44.5 | 298.5 | 22.4 | 8 | 3/4″ | 13.0 |
| 10″ | 406.5 | 30.2 | 304.8 | 323.9 | 49.3 | 362.0 | 25.4 | 12 | 7/8″ | 18.0 |
| 12″ | 482.5 | 31.8 | 365.3 | 381.0 | 55.6 | 431.8 | 25.4 | 12 | 7/8″ | 29.0 |
| 14″ | 533.5 | 35.1 | 400.1 | 412.8 | 57.2 | 476.3 | 28.5 | 12 | 1″ | 39.0 |
| 16″ | 597.0 | 36.6 | 457.2 | 469.9 | 63.5 | 539.8 | 28.5 | 16 | 1″ | 47.0 |
| 18″ | 635.0 | 39.6 | 505.0 | 533.4 | 68.3 | 577.9 | 31.8 | 16 | 1-1/8″ | 57.0 |
| 20″ | 698.5 | 42.9 | 558.8 | 584.2 | 73.2 | 635.0 | 31.8 | 20 | 1-1/8″ | 76.0 |
| 24″ | 813.0 | 47.8 | 663.4 | 692.2 | 82.6 | 749.3 | 35.1 | 20 | 1-1/4″ | 97.0 |
ANSI/ASME B16.5 SS 316 Flanges Dimensions Schedule
| Standard / Class | Diameter | Bolt Circle Diameter | Number of Bolts | Bolt Size | Bolt Hole Diameter |
|---|---|---|---|---|---|
| AS4087 PN14 | 95 | 67 | 4 | M12 | 14 |
| AS 2129 Table C | 95 | 67 | 4 | 1/2″ (13) | 14 |
| AS 2129 Table D | 95 | 67 | 4 | 1/2″ (13) | 14 |
| AS 2129 Table E | 95 | 67 | 4 | 1/2″ (13) | 14 |
| AS 2129 Table F | 95 | 67 | 4 | 1/2″ (13) | 14 |
| AS 2129 Table H | 114 | 83 | 4 | 5/8″ (16) | 17 |
| AS 2129 Table J | 114 | 83 | 4 | 5/8″ (16) | 17 |
| ANSI 150 | 89 | 60 | 4 | 1/2″ (13) | 16 |
| ANSI 300 | 95 | 67 | 4 | 1/2″ (13) | 16 |
| ANSI 600 | 95 | 67 | 4 | 1/2″ (13) | 16 |
| ANSI 900 | 121 | 83 | 4 | 3/4″ (19) | 22 |
| ANSI 1500 | 121 | 83 | 4 | 3/4″ (19) | 22 |
| ISO 7005 PN6 | 80 | 55 | 4 | M10 | 11 |
| ISO 7005 PN10 | 95 | 65 | 4 | M12 | 14 |
| ISO 7005 PN16 | 95 | 65 | 4 | M12 | 14 |
| ISO 7005 PN20 | 90 | 60.5 | 4 | M14 | 16 |
| ISO 7005 PN25 | 95 | 65 | 4 | M12 | 14 |
| ISO 7005 PN40 | 95 | 65 | 4 | M12 | 14 |
SS UNS S31600 WNRF Flanges Weight Chart
| Temp (°F) | 150# | 300# | 400# | 600# | 900# | 1500# | 2500# |
|---|---|---|---|---|---|---|---|
| -20 to 100 | 275 | 720 | 960 | 1440 | 2160 | 3600 | 6000 |
| 200 | 230 | 600 | 800 | 1200 | 1800 | 3000 | 5000 |
| 300 | 205 | 540 | 720 | 1080 | 1620 | 2700 | 4500 |
| 400 | 190 | 495 | 660 | 995 | 1490 | 2485 | 4140 |
| 500 | 170 | 465 | 620 | 930 | 1395 | 2330 | 3880 |
| 600 | 140 | 435 | 580 | 875 | 1310 | 2185 | 3640 |
| 650 | 125 | 430 | 575 | 860 | 1290 | 2150 | 3580 |
| 700 | 110 | 425 | 565 | 850 | 1275 | 2125 | 3540 |
| 750 | 95 | 415 | 555 | 830 | 1245 | 2075 | 3460 |
| 800 | 80 | 405 | 540 | 805 | 1210 | 2015 | 3360 |
| 850 | 65 | 395 | 530 | 790 | 1190 | 1980 | 3300 |
| 900 | 50 | 390 | 520 | 780 | 1165 | 1945 | 3240 |
| 950 | 35 | 380 | 510 | 765 | 1145 | 1910 | 3180 |
| 1000 | 20 | 320 | 430 | 640 | 965 | 1605 | 2675 |
| 1050 | 20 | 310 | 410 | 615 | 925 | 1545 | 2570 |
| 1100 | 20 | 255 | 345 | 515 | 770 | 1285 | 2145 |
| 1150 | 20 | 200 | 265 | 400 | 595 | 995 | 1655 |
| 1200 | 20 | 155 | 205 | 310 | 465 | 770 | 1285 |
| 1250 | 20 | 115 | 150 | 225 | 340 | 565 | 945 |
| 1300 | 20 | 85 | 115 | 170 | 255 | 430 | 715 |
| 1350 | 20 | 60 | 80 | 125 | 185 | 310 | 515 |
| 1400 | 20 | 50 | 65 | 95 | 145 | 240 | 400 |
| 1450 | 15 | 35 | 45 | 70 | 105 | 170 | 285 |
| 1500 | 10 | 25 | 35 | 55 | 80 | 135 | 230 |
ANSI B16.5 SS 316 Flanges Price List
| Flange Description | Price in India (INR) | Price in UAE (AED) |
|---|---|---|
| Weld Neck (WNRF) SS 316 Flange | ₹1,087 / Piece | 56.29 AED |
| Standard SS 316 Flange (Unit Price) | ₹487 / Piece | 25.22 AED |
| ASTM A182 316 Plate Flange | ₹522 / Piece | 27.03 AED |
| SS 316 Flange (Weight-based) | ₹411 / kg | 21.28 AED |
Related Products
- Stainless Steel 304 Flanges
- Stainless Steel 304L Flanges
- Stainless Steel 304H Flanges
- Stainless Steel 310 Flanges
- Stainless Steel 310S Flanges
- Stainless Steel 316 Flanges
- Stainless Steel 316L Flanges
- Stainless Steel 316H Flanges
- Stainless Steel 317 Flanges
- Stainless Steel 317L Flanges
- Stainless Steel 321 Flanges
- Stainless Steel 321H Flanges
- Stainless Steel 347 Flanges
- Stainless Steel 347H Flanges
- Stainless Steel 446 Flanges
Frequently Asked Questions
What are Stainless Steel 316 flanges?
Stainless Steel 316 flanges are pipe connection components made from molybdenum-bearing stainless steel, offering excellent corrosion resistance, especially in chloride environments.
What are the applications of SS 316 flanges?
They are widely used in marine, chemical processing, food processing, pharmaceutical, and oil & gas industries.
What is the pressure rating of SS 316 flanges?
SS 316 flanges are available in pressure classes ranging from Class 150 to Class 2500, depending on design and standards.
Why is SS 316 better than SS 304 for flanges?
SS 316 contains molybdenum (2–3%), which provides better resistance to pitting and corrosion, especially in harsh and saline environments.
What is the price of SS 316 flanges in India?
The price of SS 316 flanges in India varies based on size, type, pressure class, and quantity, but it is generally higher than that of SS 304 due to added molybdenum content.
What is the difference between SS 316 and SS 316L flanges?
The main difference is carbon content. SS 316L has lower carbon (max 0.03%) than SS 316 (max 0.08%), which reduces the risk of carbide precipitation during welding and makes 316L the preferred choice for welded assemblies and corrosion-sensitive fabrications. Both grades contain 2–3% molybdenum for chloride resistance.
What is the UNS number for SS 316 flanges?
The UNS number for Stainless Steel 316 is UNS S31600. It is equivalent to DIN 1.4401 (European standard), JIS SUS 316 (Japanese standard), and EN designation X5CrNiMo17-12-2.
