Calico Metal Alloys LLP is a leading supplier of Lean Duplex 2101 Flanges in India. We specialize in providing premium-grade industrial components to diverse sectors worldwide. Among our extensive product range, we offer a comprehensive selection of Lean Duplex 2101 Flanges, catering to the stringent requirements of various industries.

With a focus on excellence, we ensure that our Lean Duplex 2101 Flanges meet the highest industry standards. These flanges, made from lean duplex stainless steel, exhibit exceptional strength, corrosion resistance, and durability, making them ideal for demanding applications in sectors such as oil and gas, chemical processing, and marine engineering. Our commitment to precision engineering and quality assurance guarantees reliable performance and long-term functionality of our flange products.

Our reputation as a reliable supplier extends beyond India, with a global audience relying on our expertise and product quality. Through efficient logistics and responsive customer service, we ensure timely delivery of Lean Duplex 2101 Flanges worldwide, fostering long-term partnerships built on trust and satisfaction. With a dedication to customer-centric solutions and continuous improvement, we remain at the forefront of the industry, meeting the evolving needs of our discerning customers.

Lean Duplex 2101 Flanges

Manufacturing Process Of Lean Duplex 2101 Flanges

Raw Material

The system controls inspect the raw material quality at the first stage in accordance with the test certificate as well as dimensions and appearance.

Material Cutting

This method of making flanges involves cutting stripes from the center plate and rolling them into a circle.


Compared to cast flanges, forged flanges typically contain less carbon and are less likely to corrode. Temperature control, weight measurement, and material grade checking are used in forgings.

Heat Treatment

The total forging cooling speed is the slowest throughout this heat treatment procedure; the standardizing and decreasing cooling speeds are faster.

Final Inspection

Measure and check the flange's dimensions and size using this procedure.

What Are Lean Duplex 2101 Flanges?

Lean Duplex 2101 flanges are components used in piping systems made from Lean Duplex Stainless Steel grade 2101. This material offers an optimal combination of corrosion resistance and strength for various industrial uses such as chemical processing, oil and gas exploration and marine environments - perfect for chemical processing operations, oil & gas operations as well as marine environments. Lean Duplex Stainless Steel 2101 flanges are known for their long durability, cost effectiveness and resistance against chloride-induced stress corrosion cracking.

Advantages of Lean Duplex 2101 Flanges

Corrosion Resistance: Lean Duplex 2101 Flanges provide excellent corrosion resistance in environments containing chlorides such as seawater or brine solutions, making them suitable for marine applications as well as industries where corrosion resistance is critical.

Strength: Lean Duplex 2101 boasts excellent mechanical properties, with superior tensile and yield strengths for fabrication of durable and reliable flanges capable of withstanding high pressure, temperature environments.

Cost-Effectiveness: Lean Duplex 2101 provides an economically advantageous duplex stainless steel option while still offering excellent corrosion resistance and strength, making it the optimal cost-saving material choice for various industrial applications.

Weldability: Lean Duplex 2101 provides excellent weldability, which simplifies fabrication processes and assembly of flange components. Furthermore, this weldability helps preserve integrity during manufacturing and installation of its flanges.

Versatility: Lean Duplex 2101 versatility has seen it utilized across various industries and applications - chemical processing, oil and gas exploration and extraction, pulp & paper mills and desalination plants among them. Due to this versatility it remains one of the preferred choices in many engineering projects.

Low Thermal Expansion: Lean Duplex 2101 low thermal expansion coefficient helps lower distortion and leakage risk in applications where temperature fluctuations occur regularly, especially flange joints that need to withstand temperature variations.

Specifications and Sizes of Lean Duplex 2101 Flanges

Lean Duplex 2101 flanges typically adhere to ASTM A182 or ASME B16.5 standards, offering a combination of high strength and corrosion resistance. Common sizes range from 1/2" to 24" in diameter, with pressure ratings varying depending on the class and type of flange. These flanges are widely used in various industries, including chemical processing, marine engineering, and oil and gas production. Standard thicknesses range from 150# to 2500#, catering to diverse application requirements. Additionally, they are available in different types such as weld neck, slip-on, blind, and socket weld to suit specific piping configurations and installation needs.

Standard ASTM A182 / ASME SA182
Dimensions ANSI/ASME B16.5, B16.47 Series A & B, B16.48, BS4504, BS 10, EN-1092, DIN, ANSI Flanges, ASME Flanges, BS Flanges, DIN Flanges, EN Flanges, GOST Flange, ASME/ANSI B16.5/16.36/16.47A/16.47B, MSS S44, ISO70051, JISB2220, BS1560-3.1, API7S-15, API7S-43, API605, EN1092
Flange Size Chart 1/2" (15 NB) to 48" (1200NB), DN10~DN5000
Pressure Rating Class 150 LBS, 300 LBS, 600 LBS, 900 LBS, 1500 LBS, 2500 LBS
Pressure Calculation in DIN 6Bar 10Bar 16Bar 25Bar 40Bar / PN6 PN10 PN16 PN25 PN40, PN64
JIS 16 K, 5K, 10 K, 20 K, 30 K, 40 K, 63 K
Flange Connection / Flange Face Type Raised Face (RF), Ring Type Joint (RTJ), Flat Face (FF), Large Male-Female (LMF), Lap-Joint Face (LJF), Small Male-Female (SMF), Small Tongue, Large Tongue & Groove, Groove, Flange Pipe.
Origin West Europe / Japan / Indian / USA / Korean
Types of Flanges Threaded / Screwed / Forged / Plate
Coating Yellow Transparent, Zinc Plated, Anti-rust Paint, Oil Black Paint, Cold and Hot Dip Galvanized
Production technique Used Heat treated, Forged and Machined
Equipment Press machine, Bending machine, Pushing Machine, Sand-blasting machine, electric bevelling machine etc.
Test Certificates EN 10204/3.1B, Raw Materials Certificate, 100% Radiography Test Report, Third Party Inspection Report, etc

Types Of Lean Duplex 2101 Flanges


Lean Duplex 2101 Weld Neck Flange


Lean Duplex 2101 Blind Flange


Lean Duplex 2101 Slip on Flange


Lean Duplex 2101 Socket weld Flange


Lean Duplex 2101 Spectacle Blind Flange


Lean Duplex 2101 Threaded Flange


Other Types Of Lean Duplex 2101 Flanges

Lean Duplex 2101 Flanges Lean Duplex 2101 Lap Joint Flange
Lean Duplex 2101 Long Weld Neck Flange Lean Duplex 2101 Industrial Flanges
Lean Duplex 2101 Forged Flanges Lean Duplex 2101 RTJ Flange
Lean Duplex 2101 Stainless Steel Plate Flange Lean Duplex 2101 Square Flange
F51 Lean Duplex 2101 Flanges Lean Duplex 2101 F51 SORF Flange
Lean Duplex 2101 WNRF Flange Lean Duplex 2101 SWRF Flanges
ASME SA182 Lean Duplex 2101 Flanges ASTM A182 Lean Duplex 2101 Flange
Lean Duplex 2101 Flat Face Flange Lean Duplex 2101 BS 4504 Flanges
Lean Duplex 2101 Orifice Flange Lean Duplex 2101 Groove & Tongue Flanges
ANSI B16.5 Lean Duplex 2101 Flanges Lean Duplex 2101 Loose Flange

Lean Duplex 2101 Flanges Equivalent Grade

Lean Duplex Steel 2101

Chemical Composition of Lean Duplex 2101 Flanges

Lean Duplex 2101 is an alloy that boasts an evenly balanced composition exhibiting approximately equal proportions of austenite and ferrite phases, typically 21% chromium, 1.5% manganese and 5% nickel in composition with trace amounts of nitrogen (0.22%) and molybdenum (0.22%), providing additional corrosion protection as well as strength. With excellent resistance against localized corrosion it makes this metal suitable for applications requiring higher durability such as flanges in environments requiring high durability.

UNS EN C% Cr% Ni% Mo% N% Mn% Cu%
S32101 1.4162 < 0.04 21.0-22.0 1.35-1.7 0.1-0.8 0.2-0.25 4.0-6.0 0.1-0.8

Mechanical Properties of Lean Duplex 2101 Flanges

Lean Duplex 2101 flanges boast impressive mechanical properties that combine high strength with corrosion resistance. Their typical tensile strengths range between 620 to 800 MPa with yield strengths approaching 450 MPa, additionally they boast superior resistance against stress corrosion cracking and fatigue than austenitic stainless steels and boast enhanced toughness which makes them suitable for numerous demanding applications such as oil and gas, chemical processing, marine engineering etc.

YS (MPa) UTS (MPa) % Elongation Hardness (BHN)
485 690 36 220

Applications of Lean Duplex 2101 Flanges

Lean Duplex 2101 is an all-purpose duplex stainless steel offering superior strength, corrosion resistance, and weldability properties that makes flanges made with Lean Duplex 2101 an attractive material choice across industries, making flanges made out of this alloy suitable for many different tasks and uses. Here are a few potential examples.

Oil and Gas Industry: Lean Duplex 2101 flanges can be utilized both offshore and onshore in oil and gas exploration, production, refining facilities. They can withstand environments containing chloride ions found commonly in seawater and oilfield brine environments.

Chemical Processing: Flanges made of Lean Duplex 2101 are ideal for chemical processing facilities that need resistance against harsh acids or solvents, such use might include vessels, piping systems and reactors.

Water Treatment: Flanges made of Lean Duplex 2101 can be utilized in water treatment facilities for applications including filtration, chlorination and chemical dosing - offering excellent corrosion resistance both freshwater and wastewater environments.

Marine Applications: Lean Duplex 2101 flanges can be utilized in marine environments for shipbuilding, offshore platforms and infrastructure purposes, offering protection from corrosion caused by seawater and salt spray corrosion.

Food and Beverage Industry: Hygienic food processing facilities require Lean Duplex 2101 flanges as part of piping systems for conveying products such as foodstuffs or cleaning solutions, along with their corrosion-resistance making them suitable for acidic or saline food environments.

Construction: When corrosion resistance and structural strength are required in construction projects, Lean Duplex 2101 flanges can be utilized in structural connections, support systems and architectural elements for Lean projects.

Overall, Lean Duplex 2101 flanges are versatile components designed for various applications requiring strength, corrosion resistance and weldability in equal measures.

Electrical Industry


Automotive Industry


Construction Industry


Defence Industry


Pharmaceutical Industry


Petroleum Industry


Petrochemical Industry


Milk & Dairy Industry

Milk & Dairy

Export & Supply Destinations Of Lean Duplex 2101 Flanges

Liechtenstein, Spain, Belarus, Serbia, France, Finland, Bulgaria, Sweden, Latvia, Moldova, Monaco, Azerbaijan, Czechia/Czech Republic, Luxembourg, Belgium, Italy, Austria, Slovakia, Hungary, Greece, Romania, Switzerland, Germany, Turkey, Portugal, Russia, Ireland, Denmark, Lithuania, United Kingdom, Cyprus, Norway, Estonia, Poland, Ukraine, Malta, Croatia, Netherlands.

Sri Lanka, Kuwait, Indonesia, Japan, Taiwan, Israel, Philippines, Myanmar, Macau, Bangladesh, Singapore, Lebanon, Saudi Arabia, Afghanistan, Hong Kong, Iraq, Armenia, Mongolia, Egypt, Qatar, Bhutan, Thailand, Turkey, Bahrain, Maldives, British, North Korea, Nepal, United Arab Emirates, Iran, Kyrgyzstan, South Korea, Malaysia, Azerbaijan, Oman, Vietnam, India, Jordan, China, Russia.

Angola, Liberia, Mauritius, Libya, Mauritania, Eswatini, Mozambique, Namibia, Senegal, Niger, Zambia, Zimbabwe, Tunisia, Central African Republic, Gambia, Kenya, Uganda, Nigeria, Burkina Faso, Morocco, Ethiopia, South Africa, Egypt, Tanzania, Algeria, Madagascar, Rwanda, Botswana, Burundi, Seychelles, Cameroon.

El Salvador, Jamaica, Antigua and Barbuda, Belize, Dominican Republic, Canada, Panama, Costa Rica, Barbados, Bahamas, Haiti, United States of America, Grenada, Honduras, Cuba, Guatemala, Saint Lucia, Saint Vincent and the Grenadines, Nicaragua, Dominica, Trinidad and Tobago, Mexico.

Paraguay, Colombia, Guyana, Suriname, Ecuador, Bolivia, Venezuela, Brazil, Peru, Argentina, Chile, Uruguay.