ASTM A182 F310H Stainless Steel 310H Flanges are forged pipe flanges that offer resistance to high temperatures. They have good oxidation resistance, good creep strength, and good corrosion resistance and are used in heat exchangers, furnaces, boilers and petrochemical applications.
Introduction to Stainless Steel Flanges 310H
Stainless Steel 310H Flanges is a type of high temperature resistant pipe flanges that are used in demanding industrial applications where oxidation resistance, corrosion prevention, and strength at increased temperatures are important. The SS 310H flanges are made from stainless steel that has a higher carbon content than the usual 310 stainless steel. This helps it better resist creep and maintain its structure under harsh working conditions.
We manufacture and offer wide range of SS 310H Flanges as to worldwide standards like ASTM, ASME, ANSI, DIN and EN standards. These flanges are utilized extensively in petrochemical plants, power generation plants, heat exchangers, refineries, furnaces, pressure vessels and chemical processing industries.
310H Flanges are available in various pressure classes, diameters, and face types to fulfill project-specific requirements. Being one of the leading producer of SS 310H Flange, we specialize in offering precision-machined flanges that offer outstanding dimensional accuracy, corrosion resistance and a long service life.
What are ASTM A182 F310H Flanges?
ASTM A182 F310H Flangesare forged stainless steel pipe flanges made from heat resistant austenitic stainless steel grade 310H. The material is high in chromium and nickel content, providing excellent oxidation resistance and good performance at high temperatures.
The “H” in ASTM A182 F310H flanges signifies increased carbon content, which increases strength at high temperatures and resistance to creep. This enables its use in applications requiring continuous exposure to temperatures up to 1100°C.
These flanges are commonly used in:
- Heat exchangers
- Boilers
- Furnace systems
- Pressure piping
- Thermal processing units
- Power plants
- Petrochemical industries
Table of Contents
- ➤ What are ASTM A182 F310H Flanges?
- ➤ Advantages of 254 SMO Pipe Fittings
- ➤ Types of Stainless Steel 310H Flanges
- ➤ Applications of UNS S31009 Flanges
- ➤ Stainless Steel 310H Flanges Specification
- ➤ ASTM A182 F310H Flanges Chemical Composition
- ➤ Mechanical Properties of SS 310H Flanges
- ➤ EN 1092-1 SS 310H Flange Dimensions
- ➤ SS 310H Flanges Weight Chart
- ➤ 254 SMO Buttweld Fittings Price List
- ➤ Why Choose Us for 254 SMO Pipe Fittings?
Key Features of 310H Stainless Steel Flanges
- Excellent High Temperature Resistance: One of the major advantages of Stainless steel 310H flanges is their ability to withstand extremely high temperatures without losing mechanical strength.
- Superior Oxidation Resistance: The high chromium content forms a protective oxide layer that prevents surface degradation in oxidizing atmospheres.
- Strong Corrosion Resistance: These flanges perform well in environments exposed to sulfur compounds, nitriding gases, and thermal cycling.
- Enhanced Creep Strength: Compared to standard 310 grades, Alloy 310H flanges provide better creep resistance during long-term elevated temperature exposure.
- Good Weldability: The material can be easily welded using standard welding techniques without compromising structural integrity.
Types of Stainless Steel 310H Flanges
We supply a wide variety of Alloy 310H flanges for industrial piping systems:
- Weld Neck Flanges
- Slip-On Flanges
- Blind Flanges
- Socket Weld Flanges
- Threaded Flanges
- Lap Joint Flanges
- Spectacle Blind Flanges
- Orifice Flanges
- Long Weld Neck Flanges
- Ring Type Joint (RTJ) Flanges
These flanges are manufactured according to ASME B16.5, ASME B16.47, and EN 1092-1 SS 310H flange standards.
Applications of UNS S31009 Flanges
The outstanding mechanical and corrosion-resistant properties of UNS S31009 flanges make them suitable for several industrial applications:
| Industry | Applications |
|---|---|
| Petrochemical | High-temperature pipelines |
| Power Plants | Boiler systems |
| Oil & Gas | Pressure piping |
| Chemical Industry | Corrosive fluid handling |
| Heat Treatment Plants | Furnace equipment |
| Marine Industry | High heat exhaust systems |
| Cement Industry | Kiln systems |
| Food Processing | High-temperature processing lines |
Stainless Steel 310H Flanges Specification
| Specification | Details |
|---|---|
| Material Grade | Stainless Steel 310H |
| UNS Number | UNS S31009 |
| ASTM Standard | ASTM A182 F310H |
| DIN / EN | EN 1.4845 |
| Flange Standards | ASME B16.5, ASME B16.47, EN 1092-1 |
| Size Range | ½” NB to 48” NB |
| Pressure Class | 150#, 300#, 600#, 900#, 1500#, 2500# |
| Face Type | RF, FF, RTJ |
| Manufacturing Type | Forged |
| Form | Round |
| Origin | India |
| Testing | PMI, Radiography, Hydro Test, IGC Test |
Mechanical Properties of SS 310H Flanges
| Property | Value |
|---|---|
| Tensile Strength | 515 MPa (min) |
| Yield Strength | 205 MPa (min) |
| Elongation | 40% (min) |
| Hardness | 95 HRB Max |
| Density | 7.9 g/cm³ |
| Melting Point | 1400°C – 1450°C |
ASTM A182 F310H Flanges Chemical Composition
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.04 – 0.10 |
| Chromium (Cr) | 24.0 – 26.0 |
| Nickel (Ni) | 19.0 – 22.0 |
| Manganese (Mn) | 2.0 Max |
| Silicon (Si) | 1.5 Max |
| Phosphorus (P) | 0.045 Max |
| Sulfur (S) | 0.03 Max |
| Iron (Fe) | Balance |
The higher chromium and nickel content provide excellent oxidation resistance and thermal stability, making UNS S31009 flanges suitable for elevated temperature service.
EN 1092-1 SS 310H Flange Dimensions
Weld Neck Flange Dimensions (Approximate)
| Size | OD (mm) | Thickness (mm) | Bolt Circle (mm) |
|---|---|---|---|
| 1/2" | 95 | 66 | |
| 1” | 115 | 16 | 79 |
| 2” | 165 | 18 | 120 |
| 4” | 280 | 24 | 191 |
| 6” | 355 | 26 | 241 |
| 8” | 420 | 30 | 298 |
SS 310H Flanges Weight Chart
| Size | Approx Weight (kg) |
|---|---|
| ½” | 1.2 |
| 1" | 2.1 |
| 2" | 4.8 |
| 4" | 11.5 |
| 6" | 21.0 |
| 8" | 35.0 |
Manufacturing & Quality Testing
As a reliable Stainless steel 310H flange supplier, we ensure every flange undergoes strict inspection and testing procedures before dispatch.
Our quality checks include:
- Positive Material Identification (PMI)
- Ultrasonic Testing
- Hydrostatic Testing
- Intergranular Corrosion Testing
- Dimensional Inspection
- Hardness Testing
- Radiography Testing
Mill test certificates are supplied according to EN 10204 3.1 standards.
SS 310H Flanges for Heat Exchangers
SS 310H flanges for heat exchangers are highly preferred in industries operating under continuous high-temperature conditions. Heat exchangers require piping components that can handle thermal expansion, pressure fluctuations, and corrosive fluids.
Due to their superior thermal stability, these flanges are commonly used in:
- Petrochemical heat exchangers
- Industrial furnace systems
- Waste heat recovery units
- Thermal oil heaters
- Steam generation plants
The material’s resistance to scaling and oxidation helps maintain operational efficiency over extended periods.
Why Choose Us for SS 310H Flanges?
- Wide stock availability
- Competitive pricing
- Fast delivery schedules
- International quality standards
- Custom dimensions available
- Third-party inspection support
- Global export capability
Our experience in supplying 310H stainless steel flanges across various industries helps ensure reliable solutions for high-temperature and corrosion-resistant applications.
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
Frequently Asked Questions
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