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Lean Duplex 2101 Angle Channel is an advanced stainless steel alloy designed to provide excellent strength, corrosion resistance, and cost efficiency. This grade features a dual-phase microstructure consisting of approximately equal parts ferrite and austenite, which enhances its mechanical and corrosion properties. Lean Duplex 2101 offers superior performance compared to conventional stainless steels such as 304 and 316. It is widely used in structural and architectural applications due to its high yield strength, allowing thinner sections to be used without compromising performance. The Angle Channel form is ideal for frameworks, supports, and load-bearing structures exposed to harsh environments.
One of the primary advantages of Lean Duplex 2101 Angle Channel is its excellent resistance to localized corrosion, including pitting and crevice corrosion, especially in chloride-containing environments. Its low nickel and molybdenum content make it a cost-effective choice compared to higher alloyed duplex grades. The alloy maintains a fine balance between strength and ductility, ensuring ease of fabrication and welding. It can be welded using standard stainless steel methods without pre-heating or post-weld heat treatment. Due to these properties, Lean Duplex 2101 is an attractive material for industries requiring durability and cost savings.
Lean Duplex 2101 Angle Channel finds applications in multiple sectors such as marine, construction, pulp and paper, chemical, and transportation industries. In marine environments, it performs exceptionally well in salty and humid conditions, resisting corrosion and surface degradation. In architectural uses, it is commonly used for handrails, frames, and façade structures that require both aesthetic appeal and structural integrity. In the pulp and paper industry, it is used for process equipment and pipelines. Additionally, Lean Duplex 2101 is increasingly utilized in bridges and heavy-duty platforms where high mechanical strength is crucial.
The corrosion resistance of Lean Duplex 2101 Angle Channel is comparable to or better than 316L stainless steel in many environments. It exhibits excellent resistance to stress corrosion cracking, a common issue in standard austenitic stainless steels. The alloy’s dual-phase structure contributes to enhanced chloride resistance and low susceptibility to intergranular corrosion. This makes it highly reliable for applications in coastal regions or chemical plants where exposure to aggressive agents is common. Lean Duplex 2101 retains its surface finish for a long period, minimizing maintenance and replacement costs over time.
Fabrication of Lean Duplex 2101 Angle Channel is straightforward using conventional stainless steel equipment. The material has good formability and machinability, although slightly higher forces may be required compared to austenitic grades due to its higher strength. Welding can be done using techniques like GTAW, GMAW, and SMAW without the need for filler materials in many cases. Proper cleaning and handling after welding are essential to maintain corrosion resistance. Heat treatment is generally not required after fabrication. These characteristics make Lean Duplex 2101 an efficient choice for manufacturers and fabricators.
Lean Duplex 2101 Angle Channel offers numerous benefits, including superior mechanical properties, high fatigue strength, and outstanding resistance to wear and abrasion. Its high yield strength (about twice that of 304 stainless steel) allows for weight savings in structural applications. The reduced nickel content stabilizes costs while maintaining consistent quality and durability. Additionally, it offers an eco-friendly alternative due to lower alloying elements and excellent recyclability. With its combination of strength, corrosion resistance, and cost-effectiveness, Lean Duplex 2101 has become a preferred material for demanding industrial and architectural projects.
Lean Duplex 2101 Angle Channels are manufactured according to international standards such as ASTM A240, ASME SA240, and EN 1.4162. These standards ensure consistency in chemical composition, mechanical properties, and surface finish. Reputed manufacturers maintain strict quality control processes to ensure that each channel meets dimensional accuracy and performance criteria. The product is available in various sizes, thicknesses, and lengths to meet diverse engineering requirements. Every piece is inspected and tested to ensure it performs reliably under extreme conditions, delivering long-term service with minimal maintenance.
Specification Table
| Specification | Details |
|---|---|
| Product Name | Lean Duplex 2101 Angle Channel |
| Standard | ASTM A240 / ASME SA240 / EN 1.4162 |
| UNS Number | S32101 |
| Grade | Lean Duplex Stainless Steel 2101 |
| Form | Angle, Channel, Flat, Equal & Unequal Angles |
| Size Range | 25 mm x 25 mm to 200 mm x 200 mm (Thickness: 3 mm to 20 mm) |
| Length | Up to 6000 mm (Custom cut lengths available) |
| Finish | Hot Rolled, Cold Drawn, Pickled, Annealed, Polished |
| Manufacturing Process | Hot Formed / Cold Formed |
| Application | Construction, Marine, Chemical Processing, Architectural Structures |
Chemical Composition (Typical ranges for SSIS)
Note: Values are typical ranges. Final composition will be confirmed on MTC provided per lot.
| Element | Percentage (%) |
|---|---|
| Chromium (Cr) | 21.0 – 22.0 |
| Nickel (Ni) | 1.35 – 1.70 |
| Manganese (Mn) | 4.0 – 6.0 |
| Molybdenum (Mo) | 0.1 – 0.8 |
| Nitrogen (N) | 0.20 – 0.25 |
| Carbon (C) | ≤ 0.04 |
| Silicon (Si) | ≤ 1.0 |
| Phosphorus (P) | ≤ 0.040 |
| Sulfur (S) | ≤ 0.030 |
| Iron (Fe) | Balance |
Mechanical Properties (Typical)
| Property | Metric Value | Imperial Value |
|---|---|---|
| Tensile Strength | 650 MPa (min) | 94 ksi (min) |
| Yield Strength (0.2% Offset) | 450 MPa (min) | 65 ksi (min) |
| Elongation | 30% (min) | 30% (min) |
| Hardness (Brinell) | 290 HB (max) | 290 HB (max) |
| Impact Toughness (Charpy V-Notch) | ≥ 100 J at -40°C | ≥ 74 ft-lb at -40°F |
| Density | 7.8 g/cm³ | 0.282 lb/in³ |
| Modulus of Elasticity | 200 GPa | 29,000 ksi |
| Poisson’s Ratio | 0.30 | 0.30 |
Equivalent Grades
| Standard | Grade | Designation |
|---|---|---|
| UNS | S32101 | Lean Duplex 2101 |
| EN / DIN | 1.4162 | X2CrMnNiN21-5-1 |
| ASTM / ASME | A240 / SA240 | Lean Duplex Stainless Steel 2101 |
| BS | 2201 | -- |
| AFNOR | Z2CN21-05Az | -- |
| JIS | SUS821L1 | -- |
Dimension & Weight Chart (Selected common sizes)
Below is a representative chart showing outside diameter, wall thickness, inside diameter, cross-sectional area of metal and calculated weight per metre (kg/m). Values are calculated using density = 7.93 g/cm³ and are for guidance — use actual MTC values for procurement & engineering.
| Size (mm) | Thickness (mm) | Weight (kg/m) | Approx. Weight (kg/ft) |
|---|---|---|---|
| 25 x 25 | 3 | 1.10 | 0.34 |
| 30 x 30 | 3 | 1.35 | 0.41 |
| 40 x 40 | 4 | 2.30 | 0.70 |
| 50 x 50 | 5 | 3.55 | 1.08 |
| 65 x 65 | 6 | 5.20 | 1.59 |
| 75 x 75 | 6 | 6.10 | 1.86 |
| 90 x 90 | 8 | 9.60 | 2.93 |
| 100 x 100 | 10 | 12.20 | 3.72 |
| 150 x 150 | 12 | 18.00 | 5.49 |
| 200 x 200 | 15 | 27.50 | 8.38 |
Types Of Lean Duplex 2101 Angal channel
Stainless Steel Angal & channel
Monel 400 Angal & channel
Inconel 600 Angal & channel
Hastelloy Angal & channel
Super Duplex Angal & channel
Duplex Angal & channel
Nickel Angal & channel
Monel K500 Angal & channel
Frequently Asked Questions (FAQ)
What is Lean Duplex 2101 Stainless Steel Angle Channel?
Lean Duplex 2101 Angle Channel is a low-nickel duplex stainless steel that combines high strength with excellent corrosion resistance. It contains a balanced microstructure of austenite and ferrite, providing superior mechanical properties and improved resistance to stress corrosion cracking compared to standard stainless steels like 304 and 316.
What are the main applications of Lean Duplex 2101 Angle Channel?
This grade is commonly used in structural frameworks, marine environments, bridges, architectural facades, chemical processing plants, and pulp & paper industries. Its high strength allows for lightweight design, while maintaining durability in corrosive conditions.
How does Lean Duplex 2101 compare to 304 and 316 stainless steel?
Lean Duplex 2101 offers nearly twice the yield strength of 304 and 316 stainless steels, while using less nickel and molybdenum, making it more cost-effective. It also exhibits better resistance to chloride-induced corrosion and stress cracking, extending its service life in harsh environments.
Can Lean Duplex 2101 Angle Channel be welded easily?
Yes, Lean Duplex 2101 can be welded using conventional welding processes such as TIG, MIG, and SMAW. It does not typically require pre-heating or post-weld heat treatment. However, maintaining proper cleanliness and interpass temperature ensures optimal corrosion resistance.
What are the available finishes for Lean Duplex 2101 Angle Channel?
Lean Duplex 2101 Angle Channels are available in various finishes including hot rolled, cold drawn, pickled, annealed, and polished. These finishes enhance both the appearance and the corrosion resistance of the product, depending on the application.
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