Stainless Steel 316 Flanges: Comprehensive Guide by ASC LLP
At ASC LLP, we pride ourselves on being a leading supplier of high-quality stainless steel products. One of our most sought-after offerings is our stainless steel 316 flanges. Renowned for their exceptional strength, corrosion resistance, and durability, these flanges are integral to a wide range of industrial applications. In this comprehensive guide, we delve into everything you need to know about 316 stainless steel flanges, from their properties and material composition to their applications and pricing.
What Are 316 Stainless Steel Flanges?
316 stainless steel flanges are critical components used to connect pipes, valves, pumps, and other equipment to form a piping system. These flanges are made from 316 stainless steel, a material known for its outstanding resistance to corrosion, especially in harsh environments such as marine, chemical, and pharmaceutical industries. The addition of molybdenum in 316 stainless steel enhances its resistance to pitting and crevice corrosion, making it superior to 304 stainless steel in environments where chlorides and other corrosive substances are present.

Properties of 316 Stainless Steel Flanges
316 SS flanges possess a unique set of properties that make them ideal for demanding applications:
- Corrosion Resistance: One of the standout properties of 316 SS flanges is their superior resistance to corrosion. The presence of molybdenum (2-3%) in the alloy significantly enhances its ability to withstand chloride environments, reducing the risk of pitting and crevice corrosion.
- High Temperature Resistance: 316 stainless steel is known for its ability to maintain its mechanical properties at elevated temperatures. This makes 316 stainless steel flanges suitable for applications involving high-temperature conditions, such as in the chemical and petrochemical industries.
- Excellent Weldability: The weldability of 316 stainless steel is another key feature. It can be easily welded using standard fusion methods, and post-weld annealing is not required when welding thin sections. This makes it an excellent choice for flanges that need to be integrated into complex piping systems.
- Durability: The combination of toughness, strength, and resistance to corrosion and heat makes 316 stainless steel flanges highly durable, ensuring a long service life even in the most challenging environments.
- Versatility: 316 SS flanges are available in various sizes, shapes, and specifications, making them versatile components that can be tailored to specific application needs.
Advantages of 316 Stainless Steel Flanges
Using 316 stainless steel flanges offers several advantages, including:
- Long-Lasting Durability: The superior corrosion resistance of 316 stainless steel ensures that the flanges have a longer lifespan, even in harsh environments, reducing the need for frequent replacements.
- Versatility: SS 316 flanges are suitable for a wide range of applications, from marine environments to chemical processing and food and beverage industries. Their adaptability makes them a preferred choice for many engineers and designers.
- Aesthetic Appeal: The smooth, polished surface of 316 ss flanges gives them an attractive appearance, which is especially important in applications where the flange is visible, such as in architectural and decorative installations.
- Hygiene and Cleanability: 316 stainless steel is easy to clean and does not harbor bacteria, making these flanges ideal for use in the food, beverage, and pharmaceutical industries where hygiene is critical.
- Cost-Effectiveness: While 316 SS flanges may have a higher initial cost compared to other materials, their long-term durability and resistance to corrosion can lead to cost savings over time by minimizing maintenance and replacement expenses.


Schedule and Size Chart
Nominal Pipe Size (NPS) | Outside Diameter (OD) | Flange Thickness | Bolt Circle Diameter | Number of Bolts | Bolt Size |
1/2″ | 3.5″ | 0.44″ | 2.38″ | 4 | 1/2″ |
3/4″ | 3.88″ | 0.44″ | 2.75″ | 4 | 1/2″ |
1″ | 4.25″ | 0.5″ | 3.13″ | 4 | 1/2″ |
1 1/2″ | 5″ | 0.56″ | 3.88″ | 4 | 1/2″ |
2″ | 6″ | 0.62″ | 4.75″ | 4 | 5/8″ |
3″ | 7.5″ | 0.69″ | 6″ | 4 | 5/8″ |
4″ | 9″ | 0.81″ | 7.5″ | 8 | 5/8″ |
6″ | 11″ | 0.94″ | 9.5″ | 8 | 3/4″ |
8″ | 13.5″ | 1″ | 11.75″ | 8 | 3/4″ |
10″ | 16″ | 1.12″ | 14.25″ | 12 | 7/8″ |
12″ | 19″ | 1.25″ | 17″ | 12 | 7/8″ |
Mechanical Properties Chart
Property | Value |
Tensile Strength (MPa) | 515 – 690 MPa |
Yield Strength (MPa) | 205 MPa (min) |
Elongation (%) | 40% |
Hardness (Brinell) | 217 HB |
Hardness (Rockwell B) | 95 HRB |
Modulus of Elasticity | 193 – 200 GPa |
Density | 8.00 g/cm³ |
Specifications Chart
Standard | Specification |
ASTM | ASTM A182 |
ASME | ASME SA182 |
ANSI | ANSI B16.5 |
EN | EN 1092-1 |
DIN | DIN 2576 |
MSS | MSS SP-44 |
Chemical Composition Chart
Element | Composition (%) |
Chromium (Cr) | 16.0 – 18.0 |
Nickel (Ni) | 10.0 – 14.0 |
Molybdenum (Mo) | 2.0 – 3.0 |
Carbon (C) | 0.08 max |
Manganese (Mn) | 2.0 max |
Silicon (Si) | 1.0 max |
Phosphorus (P) | 0.045 max |
Sulfur (S) | 0.03 max |
Nitrogen (N) | 0.10 max |
Iron (Fe) | Balance |
Physical Properties Chart
Property | Value |
Density | 8.00 g/cm³ |
Melting Point | 1371°C – 1399°C |
Thermal Conductivity | 16.3 W/m·K (at 100°C) |
Specific Heat | 500 J/kg·K (0 – 100°C) |
Electrical Resistivity | 74 x 10⁻⁶ Ω·cm (at 20°C) |
Thermal Expansion | 16.0 µm/m·°C (0 – 100°C) |
Application Chart
Industry | Application |
Marine | Shipbuilding, Offshore platforms, Seawater piping |
Chemical Processing | Chemical reactors, Heat exchangers, Acidic environments |
Food and Beverage | Food processing, Brewery piping, Dairy equipment |
Pharmaceuticals | Pharmaceutical manufacturing, Sterilization equipment |
Oil and Gas | Refineries, Gas processing, Pipeline systems |
Power Generation | Boilers, Heat exchangers, Turbine components |
Pulp and Paper | Paper mills, Bleaching equipment |
Water Treatment | Desalination plants, Wastewater treatment |
316 Stainless Steel Flanges Price
The price of 316 stainless steel flanges can vary depending on several factors, including the size, type, and quantity of flanges required, as well as market conditions. Generally, 316 stainless steel flanges are more expensive than other grades due to the higher cost of raw materials, particularly molybdenum. However, their superior properties, such as corrosion resistance and durability, make them a cost-effective choice in the long run.
At ASC LLP, we offer competitive pricing on 316 SS flanges without compromising on quality. Our flanges are manufactured to meet international standards and are available in a variety of sizes and specifications to meet your specific needs.
Why Choose ASC LLP for 316 Stainless Steel Flanges for your projects?
At ASC LLP, we are committed to providing our customers with the highest quality stainless steel products, including 316 SS flanges. Here’s why you should choose us:
- Quality Assurance: We adhere to strict quality control procedures to ensure that our flanges meet or exceed industry standards. Each flange undergoes rigorous testing to ensure it performs well in demanding environments.
- Extensive Inventory: We maintain a large inventory of 316 SS flanges in various sizes and types, ensuring that we can meet your requirements promptly.
- Expertise: With years of experience in the industry, we have the knowledge and expertise to provide you with the best solutions for your specific applications.
- Customer Service: Our dedicated customer service team is always available to assist you with any questions or concerns. We are committed to ensuring your satisfaction with our products and services.
- Timely Delivery: We understand the importance of timely delivery in your operations. Our efficient logistics network ensures that your orders are delivered on time, every time.
316 stainless steel flanges are a vital component in many industrial applications, offering excellent corrosion resistance, durability, and versatility. Whether you’re in the chemical, petrochemical, marine, or any other industry, these flanges provide reliable performance in demanding environments. At ASC LLP, we are proud to offer high-quality 316 SS flanges that meet the stringent requirements of various industries. Contact us today to learn more about our products and how we can meet your specific needs.
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 316 Flanges. 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
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