Luois Metals, based in Houston, USA, is a well-respected manufacturer and supplier of high-quality Alloy 20 Round Bars, crafted for outstanding performance in harsh chemical environments. Known as Carpenter 20 or UNS N08020, Alloy 20 is a nickel-iron-chromium austenitic alloy that boasts impressive resistance to sulfuric acid, chloride stress corrosion cracking, and pitting. Luois Metals offers Alloy 20 round bars in a variety of diameters, lengths, and finishes, all compliant with standards like ASTM B473. These bars are perfect for critical applications in chemical processing, pharmaceuticals, food production, and marine settings, where reliability and corrosion resistance are paramount.
Alloy 20 Round Bars are made up of about 32–38% nickel, 19–21% chromium, 2–3% molybdenum, 3–4% copper, and a balanced amount of iron, with small additions of niobium to prevent intergranular corrosion. This alloy provides a yield strength ranging from 240–275 MPa, tensile strength up to 620 MPa, and remarkable elongation and toughness, even in challenging chemical environments. Alloy 20 is highly resistant to sulfuric acid, chlorides, and oxidizing agents, making it a budget-friendly alternative to pricier nickel-based alloys like Hastelloy or Inconel in moderate-temperature applications.
Alloy 20 Round Bar Specification : ASTM B473 , ASME SB473
Dimension Standard : EN, DIN, JIS, ASTM, BS, ASME, AISI
Size : 14mm-300mm
Thickness : 50 mm to 6000 mm Long
Length : 1 To 6 Meters, Custom Cut Length
Form : Round, Square, Hex(A/F), Rectangle, Billet, Ingot, Forging Etc.
| Grade | C | Mn | Si | S | Cu | Ni | Cr | Fe | Mo | P |
|---|---|---|---|---|---|---|---|---|---|---|
| Alloy 20 | 0.07 max | 2.00 max | 1.00 max | 0.035 max | 3.00 – 4.00 | 32.00 – 38.00 | 19.00 – 21.00 | 29.85 min* | 2.00 – 3.00 | 0.045 max |
| Element | Density | Melting Point | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
|---|---|---|---|---|---|
| Alloy 20 | 8.1 g/cm3 | 1443 °C (2430 °F) | Psi -80,000, MPa -551 | Psi – 35,000, MPa – 241 | 30 % |
| STANDARD | UNS | WNR. | EN | AFNOR |
|---|---|---|---|---|
| Alloy 20 | N08020 | 2.4660 | NiCr20CuMo | Z2NCUD31-20AZ |
Type | SIZES (mm) | ISO Tolerance | SIZES (Inches) |
|---|---|---|---|
Peeled and Polished | 40.00 to 150.00 | h11-DIN 1013 | 1.50″ to 6.00″ |
Cold Drawn and Ground | 10.00 to 75.00 | h9-h8-h11-h10 | 5/6″ to 2.50″ |
Cold Drawn and Polish | 3.00 to 75.00 | h9-h8-h11-h10 | 1/8″ to 3.00″ |
Peeled and Ground | 20.00 to 50.00 | h10-h9-h11 | 3/4″ to 2.00″ |
Cut to size on request (tolerance +2/-0 mm). Standard lengths of Alloy 20 Bars 2000 mm up to 6000 mm available
50.0 | 6.0 |
65.0 | 9.0 |
55.0 | 7.0 |
45.0 | 5.0 |
70.0 | 10.0 |
60.0 | 8.0 |
75.0 | 12.0 |
90.0 | 20.0 |
80.0 | 16.0 |
130.0 | 30.0 |
100.0 | 25.0 |
160.0 | 35.0 |
120.0 | 40.0 |
Alloy 20 Round Bars find extensive use in chemical and petrochemical processing, particularly in systems that deal with sulfuric acid, phosphoric acid, or chloride-laden solutions. You’ll commonly see them in heat exchangers, mixing tanks, pumps, valves, fasteners, and piping systems across industries such as pharmaceuticals, food and beverage, marine engineering, and desalination plants. This alloy is especially well-suited for acid production, pickling equipment, and pollution control systems, where corrosion resistance and mechanical stability are crucial. Alloy 20’s excellent weldability, formability, and resilience make it a top choice for these demanding applications.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Louis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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