What is A276 S31803 material？
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What is A276 material?
ASTM A276 is a standard specification applicable to various types of bars and shapes (round, square, angle, etc.), covering both hot-worked and cold-worked products. It specifies the chemical composition and mechanical properties in different conditions (annealed, quenched, and tempered). These materials are commonly used in corrosion-resistant and high-temperature applications.
What is ASTM A276 uns S31803 material?
ASTM A276 UNS S31803 is a specification for Duplex 2205 stainless steel bars, a strong, corrosion-resistant alloy with both austenitic and ferritic structures, offering high strength, good ductility, and excellent resistance to pitting and stress corrosion cracking, making it ideal for demanding industrial uses like fasteners, pressure vessels, and structural components.
ASTM A276 UNS S31803 equivalent
ASTM A276 UNS S31803 is a common designation for 22% Chromium Duplex Stainless Steel (also known as 2205), with key equivalents being ASTM A182 F51 (for forgings/flanges), ASME SA276, and European standard DIN 1.4462, covering various forms like bars, pipes (A790, A789), and plates (A240). It's essentially the same material as UNS S32205, allowing dual certification in some cases.
ASTM A276 UNS S31803 Round Bar Specification List
| Specification | ASTM A276, A479 / ASME SA276, SA479 |
|---|---|
| Standard | EN, DIN, JIS, BS, AISI, API, ASTM, ASME Round Bars |
| ASTM A276 UNS S31803 Round bars size | Diameter: 3 MM - 450 MM |
| ASTM A276 UNS S31803 Duplex Angle bar size | 3 MM * 20 MM * 20 MM ~ 12 MM * 100 MM * 100 MM |
| ASTM A276 UNS S31803 Square bar size | 4 MM *4 MM ~ 100MM * 100 MM |
| ASTM A276 UNS S31803 Duplex Hex Bar size | 2 MM To 100 MM |
| ASTM A276 F51 Bar Finish | Bright Polished, Black, Polish, Rough Turned, Grinding, Centreless Ground, NO.4 Finish, Matt Finish & BA Finish Supplier and manufacturer |
| ASTM A276 F51 Bar Tolerance | K9, K10, K11, K12, H8, H9, H10, H11, H12, H13 or as per client's requirements |
ASTM A276 Gr Uns S31803 Rod Standards
| Grade | EN 10088-3 | EN 10272 | AD2000- W2/W10 |
ASTM A 479 | ASME SA 479 | NACE MR 0175 |
|---|---|---|---|---|---|---|
| ASTM A276 UNS S31803 Round Bars | 20-450 mm | 20-160 mm | - | 20-450 mm | 20-450 mm | Independent of size |
Uns S31803 Round Bar Chemical Compatibility
| Grade | Carbon | Manganese | Silicon | Phosphorus | Sulfur | Chromium | Molybdenum | Nickel | nitrogen | Iron |
|---|---|---|---|---|---|---|---|---|---|---|
| Duplex S31803 | 0.030 Maximum | 2.00 Maximum | 1.00 Maximum | 0.030 Maximum | 0.020 Maximum | 22.0 – 23.0 | 3.0 – 3.5 | 4.50 – 6.50 | 0.14 – 0.20 | 63.72 minimum |
ASTM A276 Type S31803 Round Bars Mechanical Properties Table
| Grades | Density (g/cm 3) | Density (lb/in 3) | Melting Point (°C) | Melting Point (°F) |
|---|---|---|---|---|
| S31803 / S32205 | 7.805 | 0.285 | 1420 – 1465 | 2588 – 2669 |
Stainless steel bar A276 S31803 VS. A479 UNS S31803
ASTM A276 S31803 is a general-purpose stainless steel bar specification covering hot/cold-finished rounds/squares/hexes (min yield 450 MPa, tensile 620–880 MPa, elongation ≥25%, Brinell hardness ≤290 HB) for non-pressure structural uses, while ASTM A479 UNS S31803 is tailored for high-stress boiler/pressure vessel components with stricter heat treatment control, identical base chemistry (Cr 21.0–23.0%, Ni 4.5–6.5%, Mo 2.5–3.5%, N 0.08–0.20%), and optional higher carbon (up to 0.15%) for enhanced strength, typically costing 8–12% more than A276 grades for the same diameter.
UNS S31803 / F51 Duplex Stainless Steel Round Bar Price per ton
| Product Description | Unit | Price Range (USD/ton, 2 decimal places) |
|---|---|---|
| UNS S31803 F51 Duplex Steel Polish Forged Round Bars | Ton | 2,810.81 – 4,818.53 |
| ASTM UNS S31803 Duplex Stainless Steel Round Bar | Ton | 2,007.72 – 2,409.27 |
| UNS S31803 UNS S32205 F51 1.4462 Round Bar and Rod | Ton | 963.71 – 4,015.44 |
GNEE is a reliable supplier of stainless steel round bars, offering UNS S31803 / 1.4462 round bars with diameters typically ranging from Ø6 mm to Ø450 mm, and available in solution annealed or solution annealed and aged conditions.
All AISI 2205 stainless steel round bars are manufactured according to ASTM A479 and ASTM A276 standards and can be supplied with EN 10204 3.1 certificates.
GNEE offers various product forms, such as hot-rolled bars, forged bars, peeled bars, polished bars, and cut-to-length bars, to meet different processing and performance requirements.
For transportation and packaging, the round bars are treated with anti-rust oil, plastic wrapped, and packaged in seaworthy wooden crates or steel strapping.
