Stainless Steel 309H Flanges

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Stainless Steel 309H Flanges Manufacturer, Exporter and Supplier in Dubai, UAE

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Stainless Steel 309H flanges stand as indispensable components within intricate piping systems, celebrated for their exceptional mechanical prowess and resistance to corrosion. custom-built from Stainless Steel 309H, renowned for its superior heat resistance and robust performance in high-temperature environments, these flanges are tailored to withstand the rigors of demanding applications. With a composition characterized by elevated levels of chromium, nickel, and manganese, Stainless Steel 309H boasts unparalleled resistance to oxidation and thermal fatigue, making it a prime choice for industries operating under extreme heat conditions. Furthermore, its alloying elements contribute to its impressive mechanical properties, ensuring remarkable strength, durability, and resistance to deformation. This unique combination of attributes positions Stainless Steel 309H flanges as indispensable assets across a spectrum of industries, guaranteeing steadfast performance and longevity in even the harshest operational settings.

Stainless Steel 309H Flanges Specifications

SpecificationsASTM A240 / ASME SA240
Thickness4mm-100mm
Width1000mm, 1219mm, 1500mm, 1800mm, 2000mm, 2500mm, 3000mm, 3500mm, etc
Length2000mm, 2440mm, 3000mm, 5800mm, 6000mm, etc
Surface2B, 2D, BA, NO.1, NO.4, NO.8, 8K, mirror, checkered, embossed, hairline, sand blast, Brush, etching, etc
FinishHot rolled plate (HR), Cold rolled sheet (CR), 2B, 2D, BA NO(8), SATIN (Met with Plastic Coated)
FormCoils, Foils, Rolls, Plain Sheet, Shim Sheet, Perforated Sheet, Chequered Plate, Strip, Flats, Blank (Circle), Ring (Flange) etc.

Stainless Steel 309H Flanges Chemical Composition

GradeCMnSiPSCrNiFe
SS 3090.20210.0450.030231460
SS 309H0.04-0.102.00.750.0450.0322.0-24.015.058.0-63.0

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Stainless Steel 309H Flanges Mechanical Properties

GradeTensile Strengtd ksi (min)Yield Strength 0.2% ksi (min)Elongation %Hardness (Brinell) max
30975304095
309H403040217

Top Stainless Steel 309H Flanges Manufacturing Company in Dubai

At PipingMart, we take pride in being the largest supplier and manufacturer in the UAE, offering cutting-edge solutions for all your piping needs. With state-of-the-art production plants strategically located in the UAE, we boast a vast inventory of over 25,000 tons of premium-quality materials readily available in stock.

Contact us to get a quick quote for your requirement.

We offer These Stainless Steel 309H Flanges as per DIN, ISO, JIS or ANSI Standard.

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Advantages of Stainless Steel 309H Flanges

  • High-Temperature Resistance: Stainless steel 309H is specially designed for high-temperature applications, withstanding temperatures up to 1000°C (1832°F) without losing its mechanical properties. This makes it suitable for use in furnaces and other industrial applications where excessive heat is a factor.

  • Easy to manufacture: Stainless steel 309H is easily weldable and manufacturable, making it easy to manufacture and shape to meet specific system requirements. This makes it a versatile material for flange design and various functions.

  • Strength and durability: Stainless steel 309H exhibits superior strength and toughness even at elevated temperatures. This ensures the reliability and durability of the flange in demanding applications where mechanical strength is important.

  • Oxidation Resistance: The high chromium content of stainless steel 309H provides exceptional oxidation resistance, even at high temperatures. This property helps prevent scale formation and maintains the integrity of the material in high-temperature oxidizing environments.

  • Corrosion Resistance: Stainless steel 309H contains high levels of chromium and nickel, providing excellent corrosion resistance in a variety of corrosive environments, including acidic and alkaline solutions. This makes it suitable for use in medicine, marine environments and other corrosives.

Types of Stainless Steel 309H Flanges

ANSI B16.5 SS 309H Socket weld Flange
ANSI B16.5 SS 309H Ring Type Joint Flange
ANSI B16.5 SS 309H Spectacle Blind Flange
Threaded Flanges
SS 1.4833 Socket weld Flange
ASTM A182 F309 Ring Type Joint Flange
UNS S30900 Spectacle Blind Flanges

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Stainless Steel 309H Flanges Uses

Application Industry

Stainless Steel 309H Flanges shave excellent mechanical qualities and are resistant to wear corrosion, and high temperatures, they are widely used in various industries. These flanges are widely used in the oil and gas, petrochemical, power generation, and aerospace industries. They play an important part in joining equipment, valves, and pipe systems. They are perfect for applications exposed to severe operating conditions, such as high temperatures, high pressures, and corrosive environments, because of their exceptional strength, toughness, and wear resistance.

Oil & Gas Industry

Aerospace Industry

Petro Chemical Industry

Power Generation Industry

  • Petrochemical Industry: Stainless steel 309H flanges are used in refineries and petrochemical plants exposed to high temperatures and corrosive environments. They provide excellent resistance to high-temperature oxidation and sulfidation.

  • Aerospace and Aircraft: These flanges are used in aircraft aerospace applications such as exhaust systems, combustion chambers and afterburner components, where high-temperature resistance is critical

  • Power generation: Stainless steel 309H flanges are used in power plants in applications such as boiler tubes, super heaters, and steam turbines, where they can withstand high temperatures and pressures

  • Heat Treatment: Stainless steel 309H flanges are used in heat treatment furnaces, where they can withstand high temperatures and heat cycles without losing their mechanical properties.

  • Chemical applications: These flanges are suitable for chemical applications such as reactors, heat exchangers and vessels where hot chemicals and high temperatures are required

How to Choose the Right Stainless Steel 309H Flanges

  • Heat Resistance: 309H stainless steel is designed for high-temperature applications. Make sure the flanges have the proper heat resistance for your operating conditions, considering their maximum temperatures and fluctuations.

  • End connections: Specify the type of end connections required for your piping system (e.g., butt welded, socket welded, threaded). Make sure the flanges have end connections that match your piping components.

  • Size and Design: Select the appropriate size and thickness flanges to match your piping layout. Consider nominal pipe size, flange type (e.g., weld neck, slip-on, blind), and flange facing (e.g., raised face, flat face).

  • Pressure Pressure: Consider the amount of pressure required for your application. Flanges are usually rated based on their pressure class (e.g., Class 150, Class 300). Select flanges with pressure ratings that meet or exceed your system’s maximum pressure conditions.

  • Corrosion Resistance: Specifies the corrosive conditions in which the flange will be used. Stainless steel 309H provides excellent resistance to oxidation and sulfidation at high temperatures, making it suitable for hot environments. Make sure the flanges have the required corrosion resistance for your application.

Are Stainless Steel 309H Flanges weldable?

Yes, Stainless Steel 309H flanges are weldable due to their high chromium and nickel content, which promote weldability and resistance to intergranular corrosion. However, preheating and post-weld heat treatment may be necessary to avoid cracking and ensure optimal performance in high-temperature applications.

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FAQ (Frequently Asked Questions)

Can Stainless Steel 309H flanges be recycled after use?

Yes, Stainless Steel 309H flanges can be recycled after use. Stainless steel is highly recyclable, and the recycling process does not degrade its properties. Recycling reduces the need for raw materials, conserves energy, and helps minimize environmental impact, making it a sustainable choice for flange disposal.

Are Stainless Steel 309H flanges suitable for cryogenic applications?

No, Stainless Steel 309H flanges are not suitable for cryogenic applications. They are designed for high-temperature environments and may become brittle at low temperatures, leading to potential failure. Materials specifically engineered for cryogenic temperatures, such as austenitic stainless steels like 304L or 316L, are more appropriate for cryogenic applications.

Can Stainless Steel 309H flanges be used for underground applications?

Stainless Steel 309H flanges are not recommended for underground applications due to their susceptibility to corrosion in certain environments, particularly those with high chloride concentrations. For underground use, corrosion-resistant materials like duplex stainless steels or corrosion-resistant alloys are preferable to ensure long-term durability and reliability.

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