What is 1.4462 stainless steel 2B plate?
Jan 12, 2026
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1.4462 Stainless Steel 2B Plate - Professional Supplier
What is 1.4462 stainless steel 2B plate?
1.4462 stainless steel 2B plate is a high-strength, corrosion-resistant duplex stainless steel (also known as UNS S31803/S32205 or 2205) with a smooth, semi-bright "mill finish" (2B), offering excellent resistance to pitting and stress corrosion cracking in harsh environments like marine, chemical, and oil/gas applications. It combines austenitic and ferritic properties, providing double the yield strength of standard austenitic grades like 304, making it a versatile choice for demanding industrial uses.
What is the difference between 1.4462 2B and BA finish stainless steel?
The difference between 1.4462 (a duplex stainless steel grade) with a 2B finish and a BA finish lies in their surface appearance, reflectivity, and cost: 2B is a dull, semi-bright, general-purpose finish with slight reflectivity, ideal for forming, while BA (Bright Annealed) is a highly reflective, mirror-like finish achieved through bright annealing, making it more aesthetic but also more expensive and delicate. The 1.4462 material grade specifies the type of steel (duplex), while 2B and BA describe the surface treatment.
What is the standards for 1.4462 Stainless Steel 2B Plate?
For 1.4462 (Duplex 2205) stainless steel, standards involve chemical composition (Cr 22%, Ni 5%, Mo 3%) and mechanical properties (e.g., ≥ 450 MPa yield strength), with common specifications like ASTM A240/ASME SA240, EN 10088-2, and UNS S32205/S31803, while a 2B finish is a common cold-rolled, smooth, bright surface finish (Ra 0.1-0.5 µm) suitable for general use.
Duplex 2205 Stainless Steel Plate Specifications
GNEE offers SA240 Type 2205 stainless steel plates, sheets, bars, and custom parts to meet your project needs:
Thickness: 0.5 mm to 100 mm (plates), 0.1 mm to 6 mm (sheets)
Width: 1000 mm to 3000 mm
Length: 2000 mm to 12000 mm (sheets can be supplied in coils)
Surface Treatment: Hot rolled, cold rolled, annealed, pickled, 2B, No.1 or customized
Standards: ASTM A240, ASME SA240
Applications: SA240 Type 2205 plates are used for seawater pipelines, UNS S31803 sheets are used for chemical storage tanks
SA240 Duplex 2205 Chemical Composition
|
Element |
Percentage (%) |
|---|---|
|
Chromium (Cr) |
21.0 – 23.0 |
|
Nickel (Ni) |
4.5 – 6.5 |
|
Molybdenum (Mo) |
2.5 – 3.5 |
|
Nitrogen (N) |
0.08 – 0.20 |
|
Carbon (C) |
≤ 0.03 |
|
Manganese (Mn) |
≤ 2.0 |
|
Silicon (Si) |
≤ 1.0 |
|
Phosphorus (P) |
≤ 0.03 |
|
Sulfur (S) |
≤ 0.02 |
|
Iron (Fe) |
Balance (~65%) |
ASME SA240 Duplex 2205 sheets Mechanical Properties
|
Property |
Value at 20°C |
Value at 204°C (400°F) |
|---|---|---|
|
Tensile Strength (MPa) |
≥ 620 (90 ksi) |
≥ 550 (80 ksi) |
|
Yield Strength (MPa) |
≥ 450 (65 ksi) |
≥ 400 (58 ksi) |
|
Elongation (%) |
≥ 25 |
≥ 30 |
|
Hardness (HRB) |
≤ 31 (HRC) |
- |
|
Density |
7.80 g/cm³ (0.282 lb/in³) |
- |
SA240 Duplex 2205 Allowable Stress
The allowable stress values for SA240 Duplex 2205, per ASME BPVC Section II, Part D, ensure safe performance in corrosive and high-stress environments.
|
Temperature (°C) |
Allowable Stress (MPa) |
|---|---|
|
100 |
210 |
|
200 |
190 |
|
300 |
170 |
|
400 |
160 |
|
500 |
150 |
Duplex 2205 Plate Application
Water Treatment and Desalination
Chemical industry
Marine applications
Geothermal energy
Food production
Oil and chemical storage tankers
Architectural
2205 Duplex Stainless Steel Plate Price
| 2205 Duplex Stainless Steel Plate Price per kg | per unit (usd) |
|---|---|
| 2205 duplex 2000mm x 1000mm x 3mm thk plate | 4.59 |
| 300 mm diameter and 4mm thickness duplex 2205 plates | 30.45 |
| 2mm x 102mm x 316mm duplex 2205 plate | 3.29 |
| duplex 2 mm x 51mm x 250mm plate | 3.21 |
| 2mm x 102mm x 385mm duplex 2205 plate | 3.66 |
| duplex 2205 2mm x 102mm x 351mm plate | 3.51 |
2205 stainless steel plates are processed using advanced production equipment, ensuring the precision and consistency of each plate. The factory utilizes high-efficiency tools such as laser cutting machines, CNC punching machines, and polishing equipment, capable of processing stainless steel plates of various specifications with thicknesses ranging from 0.3mm to 8mm, and ensuring that the products meet international standards such as ASTM A240. Before shipment, each batch undergoes rigorous quality testing, including checks on surface finish, thickness tolerance, and dimensional accuracy, to ensure that the products meet customer requirements.
In terms of packaging and transportation, all stainless steel plates are treated with moisture-proof measures and safely packaged using wooden crates, pallets, or bubble wrap. Standard containers or dedicated transport vehicles are used for transportation, ensuring the integrity and safety of the goods during transit. We offer worldwide shipping, with a typical delivery time of 7-15 days from production to delivery, ensuring timely delivery to our customers.
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