Stainless Steel 904L Flanges

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Stainless Steel 904L Flanges
How much do stainless steel 904L flanges cost on average?

There are many aspects that one can consider while purchasing a 904l stainless steel flange such as availability of the flange, demanded quantity, etc.

  • To check out the pricing, you can reach out to our website, where we quote reasonable pricing, irrespective of the quantity, so that one can get the product without any issues.
  • Worried whether product is genuine, we also provide sample so that you can check it out at your end and then purchase the product. In this way, confidence and confidentiality can be achieved.
  • Also if you have any query or need some guidance, you are most welcome to get it cleared. Not only this, we also provide samples so that you can first check out its functioning and properties at your end and then take decisions accordingly.
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We are a highly reputable manufacturer of SS 904L flanges in India in accordance with ASTM A182, check its unique coatings or finishes

Can unique coatings or finishes be applied to stainless steel 904L flanges?

When dealing with high corrosion resistance or just ideally, analogy of a 904L SS forged flange is equivalent across a wide range of applications. But to make it even more corrosion resistant, unique layer or coating of Zinc, Nickel, or pasting of chromium can be added. This is one of the reasons why it relatively lasts for a long period of time.

As a supplier, we concentrate mostly on the timely supply of customized UNS N08904 blind and slip-on flanges in Mumbai, know its range of machinability and hardness

SS 904L Pipe Flanges

SS 904L Pipe Flanges

904l stainless steel blind flange

904l stainless steel blind flange

DIN 1.4539 slip on flange

DIN 1.4539 slip on flange

What is the range of machinability and hardness for Stainless Steel 904L flanges?

Mechanical properties of a 904L flange include elongation of 35%, 144 deg celsius of melting point, 515 MPa and Psi of 75000 tensile strength, density of 8.0 g/cm3. It composes 1 % Copper, 23 % Nickel, 19% Chromium, 4 % molybdenum, 0.045 % Phosphorous, 0.20 % Carbon, 1 % silica, 2 % Manganese and 0.035 % Sulphur. Due to some of these properties, it has moderate level machinability.

Due to low alloy composition, its machining is lower than nitride stainless steels. With respect to hardness, it ranges between 150 to 220 HB. Flanges such as UNS N08904 socket weld flanges retain pressure in high pressure areas, and are more resistant to Sulphur acids.

fully authorised stockist of ASTM A182 F904L forged and weld neck flanges with sizes ranging from 12" to 36′′ and pressure classes from 150 to 2500 used in the chemical sector

Stainless steel 904l flanges specification
Stainless steel 904L flanges specification


Size Pressure Standard
1/2 " to 48" NB PN6 to PN64 ANSI/ASME B16.5, B16.47 Series A & B
Specification Class Face type
ASTM B182 ASME SB182 150, 300, 600, 900, 1500, 2500 FF, RF, RTJ
Process Type
forging, casting, cutting, rolling blind, weld neck , slip on, socket weld
Only here can you find WNR 1.4539 lap joint and socket weld flanges in accordance with ANSI/ASME B16.5 at a low price, browse for several varieties online to save money
Most popular types of ss 904l pipe flanges
UNS N08904 socket weld flange

UNS N08904 socket weld flange

  • 15 to 1200NB
  • ASTM A182 | ASME SA 182
  • ANSI/ASME B16.5
ASTM A182 F904L weld neck flange

ASTM A182 F904L weld neck flange

  • Class: 150 to 2500
  • Pressure: PN6 to PN64
  • ANSI/ASME B16.47 Series A & B
SA 182 Gr F904L lap joint flange

SA 182 Gr F904L lap joint flange

  • Raised Face (RF)
  • Flate Face (FF)
  • Ring Type Joint (RTJ)
We can help you with all of your stock supply needs for SA 182 904l stainless steel reducing, plates, threaded flanges, etc. See all of its properties right here.
DIN 1.4539 blind flanges chemical properties
Grade P C Si CU Mn S Ni Cr MO
904L Min 1.00 23.00 19.0 4.00
max 0.045 0.20 1.00 2.00 2.00 0.035 28.00 23.0 5.00
UNS N08904 socket weld flanges mechanical properties
Elongation 35 %
Melting Point 1454 °C (2650 °F)
Tensile Strength MPa – 515, Psi – 75000
Density 8.0 g/cm3
(0.2%Offset) Yield Strength MPa – 205, Psi – 30000
SA 182 904l weld neck flanges equivalent
SS 904L N08904 X1NiCrMoCu25-20-5 SUS 890L 1.4539 Z2 NCDU 25-20 904S13 STS 317J5L
Can cryogenic applications use stainless steel 904l flanges?

AISI 904L reducing flange inherit a property of low temperature strength, thereby becoming an ideal solution for cryogenic applications. As a result, ASTM A182 F904L slip-on flange is widely used in storage tanks and heat exchangers. Due to it non-magnetic nature, it is also prone to salt-water corrosions. Adding to this is its excellent corrosion resistance and thermal expansion.

How should I choose the right gasket material to use with stainless steel 904L flanges?

Gaskets are considered to be one of the most essential materials which is generally placed between surfaces which are flushed to make a channel fluid conveying. There might be surfaces which might be even or straight. But gaskets play a major role to ensure that fluid might move more conveniently by creating a gap.

For choosing gasket materials, we should consider the following points without fail:

  • Nature of fluid: what type of fluid passes through the pipeline is one of the most critical factors to look upon when choosing gasket material. Different type of fluid or liquor that pass through require different gasket materials, ensuring that the flanged joint can operate well on a long-term basis.
  • Material type: during selection, which material fabricates the flanges is to be considered.
  • Type of elastomers: with respect to flexibility, elastomers play a major role as it has rubber type flexibility. When we need non-metallic gaskets, the most suitable option would be elastomeric gaskets.
  • Fibrous: this is another non-metallic type of gasket. To make flange joints more accurate, it comprises many materials like cork, mica, carbon, aramid and glass fibers.
  • Temperature and pressure conditions: one of the most important and primary features to look upon when choosing any gasket material, be it low or high temperature, or metallic or non-metallic. In operating, gaskets are prominent to endure the maximum temperature and pressure.
What distinguishes Stainless Steel 904L slip-on and weld neck flanges?

SA 182 904L weld neck flange, are butt-welded to a pipe and known to provide connection without any leaks. Most often used in high pressure applications, mainly in oil and pipelines, and are recommended when frequent dismantling is not needed.

ASTM A182 F904L slip-on flanges, which has a design which is meant to slip over at the end of the pipe and are then welded back in original place. The only difference between slip-on flanges and weld neck flanges is that, in slip-on flanges, it is used in scenarios which deals with low-pressure, such as water and gas pipelines.

SS 904l blind flange dimensions
Class 2500 150 300 1500 600 900
B 36.6 11.2 14.3 28.7 20.7 28.7
NO. L 4 4 4 4 4 4
DIA D 135 90 95 120 95 120
DIA K 88.9 60.3 66.7 82.6 66.7 82.6
DIA G 35.1 35.1 35.1 35.1 35.1 35.1
DIA L 22.2 15.9 15.9 22.2 15.9 22.2
Dimensions of ASTM A182 F904l threaded flange
Class 1500 300 150 900 600 2500
DIA K 82.6 66.7 60.3 82.6 66.7 88.9
DIA D 120 95 90 120 95 135
NO. L 4 4 4 4 4 4
DIA G 35.1 35.1 35.1 35.1 35.1 35.1
DIA A 38 38 30 38 38 43
H 38.4 22.6 15.6 38.4 28.4 46.4
THK B 28.7 14.3 11.2 28.7 20.7 36.6
DIA L 22.2 15.9 15.9 22.2 15.9 22.2