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Why Stainless Steel 904L Flanges from Sandvik Are the Ultimate Industrial Choice

Stainless Steel 904L Flanges are gaining attention in high-demand industries, and for good reason. At Sandvik, we specialize in delivering premium-grade stainless steel solutions that meet rigorous global standards. Among our top products, Stainless Steel 904L Flanges stand out for their durability, corrosion resistance, and versatility in extreme environments. Whether you’re managing a chemical plant or an offshore drilling unit, these flanges offer the reliability you need.

So, what exactly are Stainless Steel 904L Flanges? These are high-alloy austenitic stainless steel flanges designed to resist aggressive corrosion. 904L is an advanced stainless steel grade containing high levels of nickel and molybdenum, which makes it especially effective in handling acidic, chloride-rich, and seawater environments. Flanges made from 904L steel ensure leak-proof connections between piping systems, valves, and other equipment in pressure-intensive operations.

One of the key advantages of using 904L flanges is their extraordinary resistance to pitting, crevice corrosion, and stress corrosion cracking. Unlike conventional stainless steels, 904L resists sulphuric acid and other harsh chemicals. It also performs well in high temperatures and pressure conditions. These qualities make Stainless Steel 904L Flanges Manufacturers like Sandvik the preferred choice for industries that demand long-lasting, low-maintenance components.

The applications for 904L flanges span across many critical sectors. In the oil and gas industry, they are used for pipelines, offshore platforms, and pressure vessels. In chemical processing plants, these flanges handle acidic fluids with ease. Pharmaceutical and food processing facilities rely on 904L for its non-contaminating, hygienic properties. Power generation units and marine environments also benefit from the superior mechanical strength of 904L components. This versatility makes Stainless Steel 904L Flanges Suppliers a key part of numerous global supply chains.

There are several types of 904L flanges, each serving a specific function:

Weld Neck Flanges: Designed for high-pressure applications, they are welded to the pipe and have a long tapered hub for reinforcement.

Slip-On Flanges: Easy to install and suitable for low-pressure systems, they slip over the pipe and are fillet welded both inside and out.

Blind Flanges: Used to seal the end of a pipeline or valve system, blind flanges are ideal for pressure testing and flow isolation.

Socket Weld Flanges: Best for small-diameter high-pressure pipes, they offer strong, leak-proof connections.

Lap Joint Flanges: These work well with systems that need frequent dismantling and inspection.

Threaded Flanges: No welding required, making them great for systems where hot work is not feasible.

As reliable Stainless Steel 904L Flanges Stockists, Sandvik ensures timely availability of all flange types in multiple sizes, pressure ratings, and surface finishes. Our robust inventory and global reach make us a trusted name in the steel distribution market.

We also take pride in being recognized as leading Stainless Steel 904L Flanges Exporters. Our commitment to quality, traceability, and on-time delivery has helped us build a strong presence in international markets. Each flange is tested to meet ASTM and ASME standards, ensuring performance in the most challenging environments.

Partner with Sandvik for your next project and experience the unmatched performance of Stainless Steel 904L Flanges engineered for excellence.

Specification of Stainless Steel 904L Flanges

Stainless Steel Flanges Specification : ASTM A182 / ASME SA182
Dimension Standard : ANSI/ASME B16.5, B 16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, etc.
Standard : ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, etc.
Size : 1/2" (15 NB) to 48" (1200NB)
Class / Pressure : 150#, 300#, 600#, 900#, 1500#, 2500#, PN6, PN10, PN16, PN25, PN40, PN64 etc.
Flange Face Type : Flate Face (FF), Raised Face (RF), Ring Type Joint (RTJ)
DIN Flanges : DIN 2527, 2566, 2573, 2576, 2641,2642, 2655, 2656, 2627, 2628, 2629, 2631, 2632, 2633, 2634, 2635, 2636, 2637,2638, 2673.
JIS Flanges : JIS B2220 5K, JIS B2220 10K, JIS B2220 16K, JIS B2220 20K
BS Flanges : BS4504 PN 6, BS 4504 PN 10, BS4504 PN 16, BS4504 PN 25, BS4504 PN 40, BS 4504 PN 64, BS 4504 PN 100, BS 4504 PN 160, BS 4504 PN 250, BS 10, BS Table D, BS Table E, BS Table F, BS Table H.

Equivalent Grades of Stainless Steel 904L Flanges

STANDARD UNS WNR. JIS BS KS AFNOR EN
SS 904L N08904 1.4539 SUS 904L 904S13 STS 317J5L Z2 NCDU 25-20 X1NiCrMoCu25-20-5

Chemical Composition of Stainless Steel 904L Flanges

C Cr Cu Mn Mo Ni P S
Max     Max     Max Max
0.02 19.0-23.0 2.0 4.0-5.0 23.0-28.0 0.045 0.035 1.0

Mechanical Properties of Stainless Steel 904L Flanges

Grade Tensile Strength (MPa) min Yield Strength 0.2% Proof (MPa) min Elongation (% in 50mm) min Hardness
Rockwell B (HR B) Brinell (HB)
904L 490 220 36 70-90 typical 150