Stainless Steel 316H Flanges are high-temperature resistant stainless steel piping components designed for critical industrial applications. American Metallix Steel Co. manufactures precision-engineered 316H flanges that meet the demanding requirements of refineries, petrochemical plants, power generation facilities, and heavy structural engineering projects. These flanges are widely used to connect pipes, valves, pumps, and other equipment in high-pressure and high-temperature systems.Known for their superior strength and resistance to corrosion, Stainless Steel 316H Flanges are particularly suitable for process industries where elevated temperatures and aggressive media are common. Whether in pressure vessels, heat exchangers, or boiler systems, these flanges ensure leak-proof connections and long-term structural integrity.
Stainless Steel 316H is a high carbon version of the 316 austenitic stainless steel grade. The increased carbon content enhances high-temperature strength and creep resistance, making it suitable for elevated temperature service. The alloy composition typically includes chromium, nickel, and molybdenum, with chromium providing corrosion resistance and molybdenum improving resistance to pitting and crevice corrosion in chloride environments. The metallurgical structure of Stainless Steel 316H Flanges is fully austenitic, delivering excellent toughness and ductility even under thermal stress. The higher carbon content improves tensile strength and long-term creep resistance, which is essential in applications such as pressure equipment and heat treatment systems. These flanges maintain mechanical stability at high temperatures while resisting oxidation and scaling. Stainless Steel 316H Flanges are manufactured in various types including weld neck, slip-on, blind, threaded, and socket weld configurations. Precision machining, controlled forging, and strict quality inspection ensure dimensional accuracy and reliable performance in industrial piping systems.
Stainless Steel 316H Flanges offer excellent high-temperature strength, making them ideal for thermal processing plants and power generation units. Their enhanced carbon content allows them to withstand sustained loads and pressure at elevated temperatures without deformation or failure. Corrosion resistance is another key advantage. The presence of molybdenum improves resistance against chloride-induced corrosion, chemical attack, and marine exposure. This makes them suitable for offshore platforms, desalination plants, and chemical processing facilities. Durability and long service life reduce maintenance requirements and downtime in critical operations. These flanges also provide good machinability and weldability when handled under controlled conditions, enabling efficient fabrication and installation. The long-term cost efficiency of Stainless Steel 316H Flanges comes from their ability to perform reliably in harsh environments while minimizing replacement frequency.
In high-temperature refinery and petrochemical systems, Stainless Steel 316H Flanges Manufacturers supply heavy-duty flanges used in pipelines carrying steam, hydrocarbons, and corrosive chemicals. Their superior creep resistance ensures safe and secure connections in continuous processing environments. Within power plants and boiler systems, Stainless Steel 316H Flanges Suppliers provide flanges designed for high-pressure steam lines and heat exchangers. These components maintain structural integrity under fluctuating temperatures and pressures, supporting safe power generation operations.
For fabrication yards and maintenance contractors, Stainless Steel 316H Flanges Stockists ensure immediate availability of standard and customized flange sizes. This supports timely installation in structural engineering projects, industrial piping upgrades, and plant shutdown maintenance activities. In international oil and gas and infrastructure projects, Stainless Steel 316H Flanges Exporters deliver certified flanges that comply with global quality standards. Secure packaging, traceability documentation, and adherence to client specifications enable reliable supply across global markets.
Stainless Steel 316H Flanges are typically manufactured in accordance with ASTM A182, which covers forged or rolled alloy and stainless steel pipe flanges, forged fittings, and valves for high-temperature service. The corresponding ASME grade is ASME SA182 F316H, specifically intended for elevated temperature applications. Dimensional standards such as ASME B16.5 and ASME B16.47 define pressure ratings, dimensions, tolerances, and marking requirements. Compliance with these standards ensures that Stainless Steel 316H Flanges meet stringent requirements for chemical composition, mechanical properties, heat treatment, and testing, making them suitable for pressure vessels, piping systems, and high-temperature process equipment.
Steel products including flanges, round bars, pipes, tubes, plates, sheets, and coils are classified under internationally recognized standards such as ASTM, ASME, EN, DIN, JIS, and ISO. ASTM and ASME specifications are widely used in North America and the Middle East for pressure equipment and industrial piping systems. EN and DIN standards govern European structural and mechanical engineering materials, while JIS applies to Japanese industrial specifications. ISO standards harmonize quality management and testing procedures worldwide. Stainless steel grades like 316H are identified based on chemical composition and performance characteristics, ensuring compatibility across global supply chains and enabling engineers to specify appropriate materials for fabrication, structural applications, and high-temperature service.
American Metallix Steel Co.is one of the leading manufacturer and supplier of 316 Stainless Steel ANSI B16.5 Flange, SS 316L ASME B16.5 Class 150 Flanges, 316Ti SS 300# Flanges, 316/316L/316Ti Stainless Steel 1500# Flanges, ASTM A182 F304 2500 Lbs Flanges, ASME SA 182 F304L BS10 Table E Flanges, DIN Flanges, JIS Flanges at the best price in India.
Request Latest Price & Stock AvailabilityStainless Steel 316H Flanges are manufactured to ASTM A182 / ASME SA182 specifications and are available in a wide range of international standards, pressure classes, sizes, and flange face types for demanding industrial piping applications.
| Specification | Details |
|---|---|
| Standards | ANSI/ASME B16.5, EN Flanges, BS 10, B16.47 Series A & B, EN-1092, ASME Flanges, BS Flanges, B16.48, DIN, DIN Flanges, GOST Flanges, ANSI Flanges, BS4504 |
| Size | 1/2" (15 NB) to 48" (1200 NB), DN10 to DN5000 |
| Pressure Rating | Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS |
| Production Technique | Forged, Heat Treated and Machined |
| Special Design | As per your drawing, AS, ANSI, BS, DIN and JIS, 15 NB (1/2") to 200 NB (8"), Equal and Reducing Configurations |
| Connect Type / Flange Face Type | Ring Type Joint (RTJ), Small Tongue, Raised Face (RF), Lap Joint Face (LJF), Small Male-Female (SMF), Flat Face (FF), Large Tongue & Groove, Large Male-Female (LMF) |
| Largest Bore Diameter Sizes | NPS ≤ 10 |
| Minimum & Maximum Size | 1/2" to 48" |
| Origin | Indian / Japan / Korean / West Europe / USA |
| JIS Standard | 5K, 10K, 16K, 20K, 30K, 40K, 63K |
| A182 Flange EN | 6 Bar, 10 Bar, 16 Bar, 25 Bar, 40 Bar |
| Test Certificates | EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report, etc. |
| Application | Gas, Power, Chemical, Metallurgy, Petroleum, Shipbuilding, Construction, etc. |
Stainless Steel 316H Flanges are available in sizes from 1/2" to 48" with ANSI, ASME, DIN, BS, EN, GOST and JIS standards, multiple pressure ratings, and RTJ, RF, FF, LJF, SMF and LMF face configurations for industrial applications.
Stainless Steel 316H Flanges contain controlled amounts of carbon, manganese, silicon, phosphorus, sulfur, chromium, molybdenum, nickel and nitrogen to provide excellent corrosion resistance, high-temperature strength and reliable industrial performance.
| Grade | C | Mn | Si | P | S | Cr | Mo | Ni | N |
|---|---|---|---|---|---|---|---|---|---|
| 316H (S31609) | 0.04–0.10 | 2.0 max | 0.75 max | 0.045 max | 0.03 max | Min: 16.0 Max: 18.0 |
Min: 2.0 Max: 3.0 |
Min: 10.0 Max: 14.0 |
0.10 max |
The table lists the chemical composition limits for Stainless Steel 316H Flanges. All values represent percentage by weight unless otherwise stated.
The mechanical properties of Stainless Steel 316H Flanges include density, melting point, tensile strength, yield strength and elongation, providing excellent high-temperature strength and durability for demanding industrial applications.
| Density | Melting Point | Tensile Strength | Yield Strength (0.2% Offset) | Elongation |
|---|---|---|---|---|
| 8.0 g/cm³ | 1400 °C (2550 °F) | Psi – 75,000 MPa – 515 |
Psi – 30,000 MPa – 205 |
35% |
These values represent the typical mechanical properties of Stainless Steel 316H Flanges, including density, melting point, tensile strength, yield strength and elongation. Actual values may vary depending on manufacturing process, dimensions and applicable standards.