Stainless Steel 347 Fittings
At Amardeep Steel Centre LLP, we specialize in providing high-quality stainless steel products, including 347 stainless steel fittings. These fittings are critical components in various industries, offering excellent resistance to corrosion and high temperatures. This article will delve into what stainless steel 347 fittings are, their properties, advantages, and applications, ensuring that you have a comprehensive understanding of this essential material.
What Are 347 Stainless Steel Fittings?
347 stainless steel fittings are components made from 347-grade stainless steel, a type of austenitic stainless steel alloy. This alloy includes a significant percentage of chromium and nickel, along with columbium (niobium), which enhances its stability at high temperatures and improves its resistance to intergranular corrosion. The fittings are commonly used in piping systems, where they connect, redirect, and terminate the flow of liquids and gases.

Properties of 347 Stainless Steel Fittings
Understanding the properties of stainless steel 347 fittings is crucial for evaluating their suitability for specific applications. Here are some key properties:
- Corrosion Resistance: The columbium content in 347 stainless steel significantly enhances its resistance to corrosion, especially in high-temperature environments.
- High-Temperature Stability: 347 stainless steel maintains its mechanical properties at elevated temperatures, making it ideal for applications involving heat exposure.
- Excellent Weldability: This alloy exhibits good weldability, which means it can be easily fabricated and shaped into various fittings without compromising its structural integrity.
- Ductility and Toughness: Stainless steel 347 fittings are known for their ductility, allowing them to undergo deformation without breaking. They also possess good toughness, which helps them withstand impact and stress.
- Low Maintenance: Due to their corrosion-resistant properties, stainless steel 347 fittings require minimal maintenance, reducing operational costs in the long run.
- Durability: These fittings are designed to withstand harsh environments and conditions, making them a reliable choice for industrial applications.
Advantages of 347 Stainless Steel Fittings
The use of 347 stainless steel fittings in piping systems offers numerous advantages, including:
- Enhanced Corrosion Resistance: The unique composition of 347 stainless steel makes it highly resistant to corrosion, particularly in acidic and high-temperature environments. This property ensures the longevity of the fittings and reduces the need for frequent replacements.
- Versatility: 347 stainless steel fittings can be used in a wide range of applications, including chemical processing, oil and gas, power generation, and food processing. Their adaptability makes them a preferred choice for engineers and designers.
- Cost-Effective: While the initial cost of stainless steel fittings may be higher than that of other materials, their durability and low maintenance requirements lead to lower overall costs over time. The long service life of these fittings justifies the investment.
- Safety: The high-temperature stability of 347 stainless steel fittings ensures that they can safely handle hot fluids without risk of failure or leaks. This feature is crucial in industries where safety is paramount.
- Eco-Friendly: Stainless steel is a recyclable material, making 347 stainless steel fittings an environmentally friendly choice. The ability to recycle these fittings contributes to sustainability in various industries.
- Aesthetic Appeal: In addition to their functional benefits, stainless steel fittings also offer a sleek and modern appearance, making them suitable for applications where aesthetics are important.


Schedule and Size Chart
Fitting Type | Nominal Pipe Size (NPS) | Outside Diameter (OD) | Wall Thickness (WT) | Length (L) |
Elbow | 1/2″ to 12″ | Varies by size | Varies by size | Varies |
Tees | 1/2″ to 12″ | Varies by size | Varies by size | Varies |
Reducers | 1/2″ to 12″ | Varies by size | Varies by size | Varies |
Caps | 1/2″ to 12″ | Varies by size | Varies by size | Varies |
Flanges | 1/2″ to 12″ | Varies by size | Varies by size | Varies |
Mechanical Properties Chart
Property | Value |
Tensile Strength | 75-85 ksi (515-585 MPa) |
Yield Strength | 30-40 ksi (205-275 MPa) |
Elongation | 40% (min) |
Hardness | Rockwell B70 |
Impact Toughness | 60 ft-lb (81 J) at -320°F (-196°C) |
Specifications Chart
Specification | Details |
Standard | ASTM A182, ASTM A240, ASTM A312 |
Grade | 347 |
Finish | Pickled and Passivated |
Pressure Rating | As per ANSI B16.5 or B16.47 |
Temperature Range | Up to 1600°F (870°C) |
Chemical Composition Chart
Element | Composition (wt%) |
Chromium (Cr) | 17.0-19.0 |
Nickel (Ni) | 9.0-12.0 |
Iron (Fe) | Balance |
Columbium (Cb) | 10 x C + 4.0-6.0 |
Manganese (Mn) | 2.0 max |
Silicon (Si) | 1.0 max |
Carbon (C) | 0.08 max |
Phosphorus (P) | 0.045 max |
Sulfur (S) | 0.03 max |
Physical Properties Chart
Property | Value |
Density | 8.03 g/cm³ (0.290 lb/in³) |
Melting Point | 2550°F (1400°C) |
Thermal Conductivity | 10.4 W/m·K |
Electrical Resistivity | 0.72 µΩ·cm |
Coefficient of Thermal Expansion | 16.0 µm/m·°C |
Application Chart
Industry | Application |
Chemical Processing | Piping systems for acids and chemicals |
Oil and Gas | Pipelines and equipment in harsh environments |
Power Generation | High-pressure steam systems |
Food and Beverage | Processing and handling equipment |
Pharmaceuticals | Sterile and sanitary systems |
Aerospace | Components in high-temperature environments |
In summary, SS 347 fittings are an excellent choice for various industrial applications, thanks to their superior properties and advantages. Their resistance to corrosion, high-temperature stability, and ease of maintenance make them a reliable option for piping systems. At Amardeep Steel Centre LLP, we offer a wide range of 347 SS fittings, ensuring that you find the right components for your specific needs.
Whether you require elbows, tees, reducers, caps, or flanges, our commitment to quality and customer satisfaction ensures that you receive products that meet the highest standards. If you have any questions or need assistance selecting the right fittings, please don’t hesitate to contact us. Our expert team is here to help you find the best solutions for your projects.
Global Reach
Amardeep Steel Centre boasts a robust global presence, committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality Stainless Steel 347 Fittings. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.

Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.