Stainless Steel 304 Flanges

Stainless Steel 304 Flange Supplier & Manufacturer

Stainless Steel 304 Flanges are made using an alloy of austenitic stainless steel that takes the form of an austenitic stainless steel, a stainless steel alloy composed of about 18% chromium and 8% nickel. This combination is what makes the flanges robust and extremely resistant to corrosion to be used in the general industry and corrosive environment. The material is strong mechanically with a minimum tensile strength at 515 MPa and minimum yield strength at 205 Mpa. It also shows good resistance to corrosion in the majority of atmospheric conditions.

An SS 304 Flange is a flange made of such material, and it has the grade name SS UNS S30400. The typical standard material is ASTM A182 Grade F304/L (where L denotes low content of carbon). These parts are produced with various pressure ratings to fit various system needs such as high-pressure systems with Class 150 to Class 2500 and common ones such as Class 300 to Class 600. This guarantees their appropriateness in a broad industrial range of usage.

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SS 304 Reducing Flange, SS 304 Slip-on Flange, SS 304 Orifice Flange, SS 304 Nipo- Flange, SS 304 Lose Flange, SS 304 Lap-Joint Flange, and SS 304 Blind Flange Supplier & Manufacturer in India

Solitaire Overseas is a leading manufacturer and supplier of Stainless Steel 304 Flange to the industrial sectors of the world. Our facility in Mumbai is state of the art and thus we can be able to engage in development and delivery of a wide variety of quality products. Our SS 304 Flanges are produced of an austenitic steel alloy that has chromium and nickel which provides the 304 grade with excellent corrosion resistance in comparison with ordinary steel. The material is very desirable because it has a good weldability characteristic and formability. These are highly resistant SS UNS S30400 Pipe Flanges, which are able to withstand numerous atmospheric conditions and corrosive media.

SS 304 Flanges can be used as a necessary element used to firmly join different elements of a piping system including pipes, valves, pumps, and other devices. These flanges are made in various specifications and types to satisfy the needs of exact customers. We have SS 304 Slip-on Flange, SS 304 Blind Flange, SS 304 Orifice Flange and other types such as Reducing, Nipo-, Lose, and Lap-Joint flanges. These products are highly applied in the industrial sector such as machinery, car headers and food handling equipment. Our Stainless Steel 304 Flange products are designed with a high level of quality checks which make the products durable and reliable.

Ready to discuss your requirements or need a quote? Contact Solitaire Overseas today for premium Stainless Steel Flanges.

Table of Contents

Stainless Steel 304 Flanges Specifications

We manufacture SS 304 Flanges strictly according to international standards, ensuring top performance and seamless integration into your systems. Here are the key specifications for our product range.

SpecificationDetails
Specifications ASTM A182, A240 / ASME SA182, SA240
Standards ANSI Flanges, ASME Flanges, DIN Flanges, EN Flanges, BS Flanges, JIS Flanges, AWWA Flanges etc.
Dimensions ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc
Size Range 1/2" (15 NB) to 48" (1200NB)
Pressure / Class 150#, 300#, 600#, 900#, 1500# & 2500#.
Flange Face Typee Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)

304 Stainless Steel Flanges Chemical Composition

The superior corrosion resistance and weldability of our 304 Flanges come from a precisely balanced chemical structure. This composition ensures maximum durability and reliability in challenging environments.

Gr. 304 Stainless Steel Flanges Chemical Composition
Grade C Ni Si N S Mn P Cr Mo
SS 304 min. - 8.0 - - - - - 18.0 -
max. 0.08 10.5 0.75 0.10 0.030 2.0 0.045 20.0

Mechanical Properties of SS 304 Flanges

Our SS 304 Flanges are engineered to withstand rigorous industrial demands. Review the mechanical properties that guarantee their strength and operational integrity under pressure.

Grade Tensile Strength (MPa) min Elongation (% in 50mm) min Yield Strength 0.2% Proof (MPa) min Hardness
Rockwell B (HR B) max Brinell (HB) max
SS 304 515 40 205 92 201

Physical Properties of SS 304 Flanges

Understanding the physical characteristics of our SS 304 Flanges is crucial for proper system design. These inherent properties ensure stability and long-term performance.

Gr. Density (kg/m3) Elastic Modulus (GPa) Mean Coefficient of Thermal Expansion (m/m/0C) Thermal Conductivity(W/m.K) Specific Heat 0-1000C(J/kg.K) Electrical Resistivity (n.m)
0-1000C 0-3150C 0-5380C at 1000C at 5000C
A182 304 8000 193 17.2 17.8 18.4 16.2 21.5 500 720

ASTM A182 F304 Stainless Steel Flanges Equivalent Grades

To ensure global compatibility, our ASTM A182 F304 Flanges meet standards equivalent to leading international grades. Consult this table for easy cross-referencing.

STANDARD UNS WERKSTOFF NR. AFNOR EN JIS BS GOST
SS 304 S30400 1.4301 Z7CN18‐09 X5CrNi18-10 SUS 304 304S31 08Х18Н10

Weight Chart of 304 Stainless Steel Flanges

Accurate weight is critical for logistics and structural load calculations. Use our detailed weight chart to plan your project requirements precisely

Pipe Normal Diam. O.D. Flange  Thk. Of Flange Min  Diam.
of
Hub 		 Diameter of Raised Face  Length Hub.Y Thread Length Diam. 
of Bolt
Circle		 Diam. 
of Bolt
Holes		 Number
of Bolts		 Diam. of
Bolts
(inch)		 KG LB
inch dn O C X G Y T BC BH BN BD    
1/2" 15 89.00 11.20 30.20 35.10 15.70 15.70 60.50 15.80 4 1/2" 0.4 0.9
3/4" 20 98.50 12.70 38.10 42.90 15.70 15.70 69.90 15.80 4 1/2" 0.7 1.5
1" 25 108.00 14.20 49.30 50.80 17.50 17.50 79.30 15.80 4 1/2" 0.8 1.8
1-1/4" 32 117.50 15.70 58.70 63.50 20.60 20.60 88.90 15.80 4 1/2" 1.2 2.6
1-1/2" 40 127.00 17.50 65.00 73.20 22.40 22.40 98.60 15.80 4 1/2" 1.5 3.3
2" 50 152.50 19.10 77.70 91.90 25.40 25.40 120.70 19.10 4 5/8" 2.3 5.1
2-1/2" 65 178.00 22.40 90.40 104.60 28.40 28.40 139.70 19.10 4 5/8" 3.7 8.1
3" 80 190.50 23.90 108.00 127.00 30.20 30.20 152.40 19.10 4 5/8" 4.1 9
3-1/2" 90 216.00 23.90 122.20 139.70 31.80 31.80 177.80 19.10 8 5/8" 5.1 11.2
4" 100 228.50 23.90 134.90 157.20 33.30 33.30 190.50 19.10 8 5/8" 5.9 13
5" 125 254.00 23.90 163.60 185.70 36.60 36.60 215.90 22.40 8 3/4" 7 15.4
6" 150 279.50 25.40 192.00 215.90 39.60 39.60 241.30 22.40 8 3/4" 8.4 18.5
8" 200 343.00 28.40 246.10 269.70 44.50 44.50 298.50 22.40 8 3/4" 13 28.6
10" 250 406.50 30.20 304.80 323.90 49.30 49.30 362.00 25.40 12 7/8" 18 39.5
12" 300 482.50 31.80 365.30 381.00 55.60 55.60 431.80 25.40 12 7/8" 29 64
14" 350 533.50 35.10 400.10 412.80 57.20 57.20 476.30 28.50 12 1" 39 86
16" 400 597.00 36.60 457.20 469.90 63.50 63.50 539.80 28.50 16 1" 47 103
18" 450 635.00 39.60 505.00 533.40 68.30 68.30 577.90 31.80 16 1 1/8" 57 126
20" 500 698.50 42.90 558.80 584.20 73.20 73.20 635.00 31.80 20 1 1/8" 76 167
24" 600 813.00 47.80 663.40 692.20 82.60 82.60 749.30 35.10 20 1 1/4" 97 214

Schedule Class of SS 304 Flanges

We offer SS 304 Flanges in a comprehensive range of schedules and classes to meet all your system pressure requirements. Select the correct rating for your critical application.

Flange Schedule/Class Pipe Size - Pipe Flanges Flange Connection Type Flange Material Max. Pressure
ASME B16.5 Class 150 1/2" FNPT Stainless Steel 304 / 304L Flanges 150 psi
ASME B16.5 Class 150 1/2" Socket Weld Stainless Steel 304 / 304L Flanges 275 psi
ASME B16.5 Class 150 1/2" Welded Stainless Steel 304 / 304L Flanges 150 psi
ASME B16.5 Class 150 3/4" FNPT Stainless Steel 304 / 304L Flanges 150 psi
ASME B16.5 Class 150 3/4" Socket Weld Stainless Steel 304 / 304L Flanges 275 psi
ASME B16.5 Class 150 1-1/4" Socket Weld Stainless Steel 304 / 304L Flanges 275 psi
ASME B16.5 Class 150 1-1/2" Socket Weld Stainless Steel 304 / 304L Flanges 275 psi
ASME B16.5 Class 150 2" FNPT Stainless Steel 304 / 304L Flanges 150 psi
ASME B16.5 Class 150 2" Socket Weld Stainless Steel 304 / 304L Flanges 275 psi
ASME B16.5 Class 150 2-1/2" Socket Weld Stainless Steel 304 / 304L Flanges 275 psi
ASME B16.5 Class 150 3" Socket Weld Stainless Steel 304 / 304L Flanges 275 psi
ASME B16.5 Class 150 4" FNPT Stainless Steel 304 / 304L Flanges 150 psi
ASME B16.5 Class 150 4" Socket Weld Stainless Steel 304 / 304L Flanges 275 psi
ASME B16.5 Class 300 1/2" Slip On Stainless Steel 304 / 304L Flanges 720 psi
ASME B16.5 Class 300 1/2" Slip On Stainless Steel 304 / 304L Flanges 720 psi
ASME B16.5 Class 300 1" Slip On Stainless Steel 304 / 304L Flanges 720 psi
ASME B16.5 Class 300 1" Slip On Stainless Steel 304 / 304L Flanges 720 psi
ASME B16.5 Class 300 1-1/4" FNPT Stainless Steel 304 / 304L Flanges 720 psi
ASME B16.5 Class 300 1-1/4" Slip On Stainless Steel 304 / 304L Flanges 720 psi
ASME B16.5 Class 300 1-1/2" Slip On Stainless Steel 304 / 304L Flanges 720 psi
ASME B16.5 Class 300 1-1/2" Slip On Stainless Steel 304 / 304L Flanges 720 psi
ASME B16.5 Class 300 2" Slip On Stainless Steel 304 / 304L Flanges 720 psi
ASME B16.5 Class 300 2" Slip On Stainless Steel 304 / 304L Flanges 720 psi
ASME B16.5 Class 300 2-1/2" Slip On Stainless Steel 304 / 304L Flanges 720 psi
ASME B16.5 Class 300 2-1/2" Slip On Stainless Steel 304 / 304L Flanges 720 psi
ASME B16.5 Class 300 3" Slip On Stainless Steel 304 / 304L Flanges 720 psi
ASME B16.5 Class 300 3" Slip On Stainless Steel 304 / 304L Flanges 720 psi
ASME B16.5 Class 300 4" Slip On Stainless Steel 304 / 304L Flanges 720 psi
ASME B16.5 Class 300 4" Slip On Stainless Steel 304 / 304L Flanges 720 psi

Stainless Steel 304 Flanges Pressure Rating

Our 304 Stainless Steel Flanges are designed and rated for various pressures according to ANSI/ASME standards. Refer to this guide to ensure system safety and compliance.

ANSI/ASME B16.34 PRESSURE RATING CHART
Temperature °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

Applications of Stainless Steel 304 Flanges

Stainless Steel 304 Flanges are very versatile and are commonly used in many industries which require high power in terms of corrosion resistance, strength and ability to weld.

  • Oil & Gas Industry: It is used in the pipelines and processing equipment where there is a requirement to make reliable connections to transport crude oil, natural gas and refined products.
  • Chemical Industry: It is necessary to connect pipes and containers in which different non-aggressive chemicals and solvents are processed, and the high-pressure conditions and the minimum of the basic resistance to corrosion are obligatory.
  • Petrochemical: Is used in the refinery process and transportation of petrochemicals.
  • Power Generation Industry: This is used in water, steam and exhaust components and is used particularly in components that are not under high chloride stress.
  • Architecture, Building and Construction: It is commonly applied in structural supports, railings and ornamental elements that need to be strong and have a clean and non-corroding finish.
  • Fertilizers Industry: Fertilizers are used in equipment and piping to handle production and handling of different fertilizers.
  • Automotive Industry: It is used in some exhaust systems and other components which need resistance to heat and moisture.
  • Food And Beverage Industry: The material is popular with the industry because it is non-reactive and thus safe to work with foodstuffs, liquid, and dairy products.

Stainless Steel 304 Flange Price List

We provide high-quality Stainless Steel 304 Flanges at competitive market rates. Please review our current price list for transparent and cost-effective sourcing.

Sr No. 304 Stainless Steel Flanges Size Aprox. Wt/Unit FOB 
INR		 CIF
INR		 FOB
USD		 CIF
USD		 FOB
STGP		 CIF
STGP		 FOB
EURO$		 CIF
EURO$
1 SORF Flanges A182 Stainless Steel F304 B16.5 150# 15mm 0.49 349.60 380.00 5.297 5.758 3.567 3.878 6.356 6.909
2 SORF Flanges A182 Stainless Steel F304 B16.5 150# 20mm 0.61 434.70 472.50 6.586 7.159 4.436 4.821 7.904 8.591
3 SORF Flanges A182 Stainless Steel F304 B16.5 150# 25mm 0.90 699.20 760.00 10.594 11.515 7.135 7.755 12.713 13.818
4 SORF Flanges A182 Stainless Steel F304 B16.5 150# 32mm 1.13 737.15 801.25 11.169 12.140 7.522 8.176 13.403 14.568
5 SORF Flanges A182 Stainless Steel F304 B16.5 150# 40mm 1.48 854.45 928.75 12.946 14.072 8.719 9.477 15.535 16.886
6 SORF Flanges A182 Stainless Steel F304 B16.5 150# 50mm 2.37 1164.95 1266.25 17.651 19.186 11.887 12.921 21.181 23.023
7 SORF Flanges A182 Stainless Steel F304 B16.5 150# 65mm 3.60 2096.45 2278.75 31.764 34.527 21.392 23.253 38.117 41.432
8 SORF Flanges A182 Stainless Steel F304 B16.5 150# 80MM 4.10 2794.50 3037.50 42.341 46.023 28.515 30.995 50.809 55.227
9 SORF Flanges A182 Stainless Steel F304 B16.5 150# 100mm 6.04 3105.00 3375.00 47.045 51.136 31.684 34.439 56.455 61.364
10 SORF Flanges A182 Stainless Steel F304 B16.5 150# 125mm 6.53 3493.70 3797.50 52.935 57.538 35.650 38.750 63.522 69.045
11 SORF Flanges A182 Stainless Steel F304 B16.5 150# 150mm 7.78 4968.00 5400.00 75.273 81.818 50.694 55.102 90.327 98.182
12 SORF Flanges A182 Stainless Steel F304 B16.5 150# 200mm 12.98 9004.50 9787.50 136.432 148.295 91.883 99.872 163.718 177.955
13 SORF Flanges A182 Stainless Steel F304 B16.5 150# 250mm 17.96 11643.75 12656.25 176.420 191.761 118.814 129.145 211.705 230.114

Related Products

Frequently Asked Questions About Stainless Steel 304 Flanges

The SS 304 flanges are of many sizes, with their most common one going up to 48 inches in diameter and 1/2 inch. Weld Neck Raised Face (WNRF) design offers a stable fixing of pipes, but it is safe.

The SS 316 flanges are made to the ASTM A182 F316. They follow the standards of size to provide consistency in size, quality and pressure rating of all industrial applications like ASME B16.5, EN 1092-1 or JIS.

No, 304 stainless steel does not rust, it is rust resistant. The chromium in it forms a rust protection layer. Nonetheless, environments with extreme exposure to chlorides or saltwater may damage this layer ultimately resulting in corrosion.

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