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Stainless Steel 347 Flanges are made from stabilized austenitic stainless steel, offering superior corrosion resistance, high-temperature strength, and excellent durability. These flanges are specifically designed to withstand oxidation, intergranular corrosion, and thermal stress, making them ideal for applications involving high heat and aggressive chemical environments.
SS 347 contains columbium (niobium), which enhances its resistance to carbide precipitation and makes it an excellent choice for welding applications in petrochemical, aerospace, power generation, and food processing industries.
Why Choose Mahadev Dairy Phrama Fittings For Stainless Steel 347 Flanges?
Superior Heat Resistance
SS 347 flanges can withstand temperatures up to 870°C (1600°F), making them ideal for high-temperature applications such as boilers, heat exchangers, and furnace components.
Excellent Corrosion & Oxidation Resistance
With added columbium stabilization, Stainless Steel 347 Flanges offer exceptional resistance to intergranular corrosion and oxidation in harsh chemical environments.
Enhanced Weldability & Strength
Unlike SS 304 or SS 316, SS 347 does not require post-weld annealing, making it highly suitable for welded structures in high-temperature conditions.
Long Service Life & Durability
With its high mechanical strength, impact resistance, and low maintenance requirements, SS 347 flanges ensure long-lasting performance even in extreme industrial conditions.
Stainless Steel 347 Flanges Manufacturer in India
As a trusted Stainless Steel 347 Flanges Manufacturer in India, we provide:
Precision-engineered SS 347 flanges in various sizes & pressure ratings.
Customization options to meet unique industry requirements.
Third-party testing & certification for quality assurance.
Timely global export & doorstep delivery.
Applications of Stainless Steel 347 Flanges
These flanges are widely used in industries such as:
Petroleum & Gas Processing – Used in pipelines, refineries & offshore drilling platforms.
Power Generation – Ideal for heat exchangers, boilers & steam turbines.
Aerospace Industry – Used in high-temperature engine components.
Chemical & Pharmaceutical Processing – Ensures corrosion resistance in harsh chemicals.
Food & Beverage Industry – Safe for sanitary and high-pressure applications.
Features of Stainless Steel 347 Flanges
High-temperature strength – Performs exceptionally well in elevated temperatures.
Resistant to carbide precipitation – Suitable for welding applications without post-weld treatment.
Excellent machinability – Easy to fabricate and install.
Non-magnetic & durable – Offers better formability compared to other stainless steels.
Specifications of Stainless Steel 347 Flanges
Specification | Details |
Material Grade | Stainless Steel 347 (Stabilized Austenitic SS) |
Standard | ASTM A182 / ASME SA182 |
Size Range | ½” to 48” (DN15 to DN1200) |
Pressure Ratings | 150#, 300#, 600#, 900#, 1500#, 2500# |
Face Type | RF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint) |
Types | Slip-On, Weld Neck, Blind, Threaded, Socket Weld, Lap Joint, Orifice, Expander, Reducing |
Connection Type | Bolted, Welded, Threaded |
Temperature Resistance | Suitable for high & low temperature applications |
Corrosion Resistance | Superior resistance to oxidation, pitting, and crevice corrosion |
Chemical Composition of Stainless Steel 347 Flanges
Element | Composition (%) |
Carbon (C) | 0.08 max |
Manganese (Mn) | 2.00 max |
Phosphorus (P) | 0.045 max |
Sulfur (S) | 0.030 max |
Silicon (Si) | 1.00 max |
Chromium (Cr) | 17.0 – 19.0 |
Nickel (Ni) | 9.0 – 13.0 |
Columbium (Nb) + Tantalum (Ta) | 10 x C min; 1.0 max |
Mechanical Properties of Stainless Steel 347 Flanges
Property | Value |
Tensile Strength | 515 MPa (min) |
Yield Strength | 205 MPa (min) |
Elongation | 40% (min) |
Hardness (Brinell) | 201 max |
Hardness (Rockwell B) | 95 max |
Stainless Steel 347 Flanges Export Destinations
Region | Countries |
Middle East | Saudi Arabia, UAE, Qatar, Oman, Kuwait, Turkey, Iran, Iraq, Bahrain, Israel, Jordan |
Asia | India, Singapore, Malaysia, Thailand, South Korea, Japan, Vietnam, Indonesia, Sri Lanka |
South America | Argentina, Brazil, Chile, Colombia, Venezuela, Ecuador |
North America | USA, Canada, Mexico, Panama, Costa Rica |
Europe | UK, Germany, France, Italy, Spain, Netherlands, Russia, Greece, Portugal, Ukraine |
Africa | Nigeria, South Africa, Egypt, Algeria, Libya, Sudan |
Stainless Steel 347 Flanges Supply in Indian States & Cities
State | Major Cities |
Maharashtra | Mumbai, Pune, Nashik, Nagpur |
Gujarat | Ahmedabad, Surat, Rajkot, Vadodara |
Tamil Nadu | Chennai |
Telangana | Hyderabad |
Karnataka | Bengaluru |
West Bengal | Kolkata |
Uttar Pradesh | Kanpur, Noida, Ghaziabad |
Andhra Pradesh | Vishakhapatnam, Vijayawada |
Union Territories | Delhi, Chandigarh |
Buy High-Quality Stainless Steel 347 Flanges in India
Looking for top-quality SS 347 Flanges? We offer premium-grade flanges with certified quality, durability, and corrosion resistance. Contact us today for competitive pricing and bulk orders!
1. What are Stainless Steel 347 Flanges?
SS 347 flanges are pipe fittings made from niobium-stabilized stainless steel, which offers excellent high-temperature resistance, superior oxidation resistance, and good intergranular corrosion resistance, making them ideal for heat-intensive applications.
2. How is SS 347 different from SS 321 in flanges?
- SS 347 is stabilized with Niobium (Nb), while SS 321 is stabilized with Titanium (Ti).
- SS 347 provides better performance at high temperatures (above 900°C / 1652°F).
- SS 347 is ideal for extreme heat environments, such as refineries and high-temperature boilers.
3. What are the common applications of SS 347 Flanges?
These flanges are widely used in:
- Aerospace & Jet Engine Components
- Heat Exchangers & Furnace Parts
- Refineries & Petrochemical Plants
- Power Plants & High-Pressure Steam Applications
- Chemical & Pharmaceutical Industries
4. What types of Stainless Steel 347 Flanges are available?
: Common types include:
- Weld Neck Flange (for high-pressure and high-temperature applications)
- Slip-On Flange (easy installation)
- Blind Flange (for sealing pipe ends)
- Threaded Flange (for non-welded connections)
- Socket Weld Flange (for small-diameter, high-pressure pipes)
5. What factors affect the pricing of SS 347 Flanges?
The price is influenced by:
- Raw material costs (Nickel & Niobium content)
- Flange size, pressure rating & customization
- Manufacturing standards (ASTM, ASME, ANSI, etc.)
- Market demand & supply chain conditions