Stainless Steel 310 Flanges are forged or machined pipe connection components made from high-chromium, high-nickel austenitic stainless steel. They are used to connect, isolate, or terminate pipes and equipment, particularly in high-temperature and oxidation-resistant applications. SS 310 flanges are commonly manufactured to ASTM A182 and used with ASME B16.5 dimensional requirements.
ASTM A182 SS 310 Weld Neck Flange | 310 SS Slip On Flange
Stainless Steel 310 Flanges are high-temperature stainless steel flanges designed for demanding piping and equipment applications where resistance to heat, oxidation, and corrosion is important. The high chromium and nickel content of SS 310 provides excellent performance in elevated-temperature environments, making these flanges suitable for furnaces, heat treatment equipment, petrochemical plants, refineries, power generation systems, and process piping.
We manufacture and supply Stainless Steel 310 Flanges in different configurations, pressure classes, sizes, and face types to meet project-specific requirements. Our range includes ASTM A182 310 SS Weld Neck Flanges, 310 SS Slip on Flanges, SS Grade F310 Blind Flanges, SS 310 Threaded Flanges, SS 1.4841 Socket weld Flanges, and SS 310 Lap Joint Flange options.
What Is Stainless Steel 310?
Stainless Steel 310 is an austenitic chromium-nickel stainless steel grade developed for high-temperature service. Its high chromium content provides strong oxidation resistance, while nickel improves its high-temperature strength and overall corrosion resistance.
The material is identified as UNS S31000 and is commonly associated with 1.4841 in international material specifications.
SS 310 is often selected when ordinary stainless steel grades may not provide sufficient performance at elevated temperatures. It offers good resistance to oxidation and maintains useful mechanical strength in demanding thermal environments.
For applications requiring lower carbon content and improved welding characteristics, 310S stainless steel is another commonly selected version.
Table of Contents
- ➤ ASTM A182 SS 310 Weld Neck Flange | 310 SS Slip On Flange
- ➤ What Is Stainless Steel 310?
- ➤ Stainless Steel 310 Flanges Types We Supply
- ➤ Applications of Stainless Steel 310 Pipe Flanges
- ➤ ASME SA182 SS 310 Pipe Flanges Specifications
- ➤ Chemical Composition of Stainless Steel 310
- ➤ Mechanical Properties of SS 310 Flanges
- ➤ Stainless Steel 310 Flanges Dimensions Chart
- ➤ Stainless Steel 310 Flanges Weight Chart
- ➤ Why Choose Our Stainless Steel 310 Flanges?
Stainless Steel 310 Flanges Types We Supply
Different piping systems require different flange designs. We supply the following SS 310 flange types.
➤ ASTM A182 310 SS Weld Neck Flanges
ASTM A182 310 SS Weld Neck Flanges have a long tapered hub that transfers stress gradually from the flange into the pipe. This design makes them suitable for high-pressure, high-temperature, and critical piping systems.
They are frequently used in refineries, petrochemical plants, power plants, and process equipment.
➤ 310 SS Slip On Flanges
310 SS Slip on Flanges are fitted over the outside of a pipe and welded in position. They are relatively simple to install and are commonly selected for general industrial piping.
Their lower installation complexity makes them suitable where extreme pressure and thermal cycling are not the primary design concerns.
➤ SS Grade F310 Blind Flanges
SS Grade F310 Blind Flanges are solid flanges used to close the end of a pipeline, nozzle, or pressure vessel connection. They are particularly useful during maintenance, pressure testing, and future pipeline expansion.
We also supply SS UNS S31000 Blind Flanges in different dimensions and pressure classes.
➤ SS 310 Lap Joint Flange
The SS 310 Lap Joint Flange is normally used with a compatible stub end. The flange can rotate around the stub end, making bolt-hole alignment easier during installation.
This design is useful in systems that require frequent dismantling or inspection.
➤ A182 F310 Threaded Flange
An A182 F310 Threaded Flange contains internal threads that allow connection to a threaded pipe without welding. It can be useful in smaller-bore piping where welding is difficult or undesirable.
We also supply SS 310 Threaded Flanges and 310S Stainless Steel Screwed Flanges for suitable piping applications.
➤ SS 1.4841 Socket Weld Flanges
SS 1.4841 Socket Weld Flanges are designed primarily for smaller-diameter piping. The pipe fits into the flange socket and is secured with a fillet weld.
They are commonly used in high-pressure instrumentation, process, hydraulic, and chemical piping.
➤ 310 Stainless Steel Spectacle Blind Flanges
310 Stainless Steel Spectacle Blind Flanges combine an open ring and solid blind section in one permanently connected component. Rotating the spectacle blind allows the line to be opened or isolated.
They are useful in process plants where positive isolation is important during inspection and maintenance.
Applications of Stainless Steel 310 Pipe Flanges
Because of their high-temperature performance, SS 310 flanges are used across several industries, including:
- Oil and gas processing
- Petrochemical plants
- Refineries
- Power generation
- Chemical processing
- Heat treatment plants
- Industrial furnaces
- Cement plants
- Steel manufacturing
- Thermal processing equipment
- Heat exchangers
- Pressure vessels
- High-temperature process piping
ASME SA182 SS 310 Pipe Flanges Specifications
Our ASME SA182 SS 310 Pipe Flanges can be manufactured according to recognized international dimensional and material requirements.
| Parameter | SS 310 Flanges |
|---|---|
| Material | Stainless Steel 310 |
| UNS | S31000 |
| Common Material Number | 1.4841 |
| ASTM Material Standard | ASTM A182 |
| ASME Material Standard | ASME SA182 |
| Dimensional Standard | ASME B16.5 |
| Flange Type | WN, SO, BL, LJ, SW, Threaded |
| Pressure Classes | 150, 300, 600, 900, 1500, 2500 |
| Nominal Size | As per applicable standard |
| Face Types | RF, FF, RTJ and others as specified |
| Manufacturing | Forged / machined |
| Inspection | As per purchase order and applicable standard |
Mechanical Properties of SS 310 Flanges
| Property | Minimum / Maximum Value* |
|---|---|
| Tensile Strength | 515 MPa |
| Yield Strength | 205 MPa |
| Elongation | 40% |
| Hardness | 217 HB max |
Chemical Composition of Stainless Steel 310
| Element | Typical / Specification Requirement |
|---|---|
| Chromium | 24.0–26.0% |
| Nickel | 19.0–22.0% |
| Carbon | Up to 0.25% |
| Manganese | Up to 2.00% |
| Silicon | Up to 1.50% |
| Phosphorus | Up to 0.045% |
| Sulfur | Up to 0.030% |
Stainless Steel 310 Flanges Dimensions Chart
| Nominal Size (NPS) | DN (mm) | Flange OD (mm) | Flange Thickness (mm) | Bolt Circle / PCD (mm)* | No. of Bolt Holes* |
|---|---|---|---|---|---|
| ½″ | 15 | 88.9 | 11.2 | 60.3 | 4 |
| ¾″ | 20 | 98.6 | 12.7 | 69.9 | 4 |
| 1″ | 25 | 108.0 | 14.2 | 79.2 | 4 |
| 1¼″ | 32 | 117.3 | 15.7 | 88.9 | 4 |
| 1½″ | 40 | 127.0 | 17.5 | 98.6 | 4 |
| 2″ | 50 | 152.4 | 19.1 | 120.7 | 4 |
| 2½″ | 65 | 177.8 | 22.4 | 139.7 | 4 |
| 3″ | 80 | 190.5 | 23.9 | 152.4 | 4 |
| 3½″ | 90 | 215.9 | 23.9 | 177.8 | 8 |
| 4″ | 100 | 228.6 | 23.9 | 190.5 | 8 |
| 5″ | 125 | 254.0 | 23.9 | 215.9 | 8 |
| 6″ | 150 | 279.4 | 25.4 | 241.3 | 8 |
| 8″ | 200 | 342.9 | 28.4 | 298.5 | 8 |
| 10″ | 250 | 406.4 | 30.2 | 362.0 | 12 |
| 12″ | 300 | 482.6 | 31.8 | 431.8 | 12 |
| 14″ | 350 | 533.4 | 35.1 | 476.3 | 12 |
| 16″ | 400 | 596.9 | 36.6 | 539.8 | 16 |
| 18″ | 450 | 635.0 | 39.6 | 577.9 | 16 |
| 20″ | 500 | 698.5 | 42.9 | 635.0 | 20 |
| 24″ | 600 | 812.8 | 47.8 | 749.3 | 20 |
Stainless Steel 310 Flanges Weight Chart
| NPS | DN (mm) | Slip-On / Socket Weld Weight (kg) | Weld Neck Weight (kg) | Blind Weight (kg) |
|---|---|---|---|---|
| ½″ | 15 | 0.4 | 0.5 | 0.4 |
| ¾″ | 20 | 0.6 | 0.7 | 0.6 |
| 1″ | 25 | 0.8 | 1.0 | 0.9 |
| 1¼″ | 32 | 1.0 | 1.3 | 1.2 |
| 1½″ | 40 | 1.3 | 1.7 | 1.5 |
| 2″ | 50 | 2.1 | 2.6 | 2.4 |
| 2½″ | 65 | 3.3 | 4.1 | 3.9 |
| 3″ | 80 | 3.9 | 4.9 | 4.9 |
| 3½″ | 90 | 4.8 | 6.1 | 6.2 |
| 4″ | 100 | 5.3 | 6.8 | 7.0 |
| 5″ | 125 | 6.1 | 8.6 | 8.6 |
| 6″ | 150 | 7.5 | 10.6 | 11.3 |
| 8″ | 200 | 12.1 | 17.6 | 19.6 |
| 10″ | 250 | 16.5 | 24.0 | 28.6 |
| 12″ | 300 | 26.2 | 36.5 | 43.2 |
| 14″ | 350 | 34.6 | 48.4 | 58.1 |
| 16″ | 400 | 44.8 | 60.6 | 76.1 |
| 18″ | 450 | 48.9 | 68.3 | 93.7 |
| 20″ | 500 | 61.9 | 84.5 | 122.0 |
| 24″ | 600 | 86.9 | 115.0 | 185.0 |
Why Choose Our Stainless Steel 310 Flanges?
Choosing the right flange is about more than material grade. Dimensional accuracy, material traceability, flange facing, pressure class, inspection, and delivery requirements all affect the reliability of a piping connection.
- Material Traceability: We can provide material documentation and test certificates according to the applicable purchase requirements.
- Dimensional Accuracy: Flanges are checked for critical dimensions such as outside diameter, bolt-hole dimensions, thickness, bore, and facing.
- Multiple Flange Configurations: We supply weld neck, slip-on, blind, lap joint, threaded, socket weld, and spectacle blind designs.
- Project-Based Supply: We can support standard requirements as well as customized dimensions and documentation when specified by the customer.
- Quality Inspection: Inspection and testing can be arranged according to applicable standards, purchase orders, and third-party inspection requirements.
Related Stainless Steel Flanges
- Stainless Steel 304 Flanges
- Stainless Steel 316 Flanges
- Stainless Steel 321 Flanges
- Stainless Steel 347 Flanges
- Nickel Alloy Flanges
- Inconel Flanges
Stainless Steel 310 Flange Supplier in Mumbai, India
As a Stainless Steel 310 Flange Supplier in Mumbai, we supply SS 310 flanges for domestic industrial requirements and international projects. Our product range covers different flange types, sizes, pressure classes, and facing configurations.
We also work as a SS S31000 Flanges Supplier in Mumbai, India, providing material documentation and inspection support according to customer requirements.
For overseas requirements, we operate as a SUS 310 Flanges Exporter in India, supporting export packaging and documentation for international shipments.
Request a Quote for Stainless Steel 310 Flanges
Need Stainless Steel 310 Flanges for a piping, process, or high-temperature application? Share your required size, pressure class, flange type, material specification, quantity, and inspection requirements with us.
Our team can help you identify the appropriate SS 310 Pipe Flanges and provide the required technical and commercial information for your project.
Frequently Asked Questions
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