Alloy 20, also known as Carpenter 20, is a nickel-iron-chromium austenitic stainless steel with excellent corrosion resistance. Alloy 20 bars are a popular choice in various industries where resistance to corrosive environments is crucial. These bars are composed of nickel, chromium, and iron, with additional elements like copper and molybdenum for enhanced corrosion resistance.
One of the notable features of Alloy 20 bars is their resistance to a wide range of corrosive environments, including sulfuric acid, phosphoric acid, and nitric acid. This makes them suitable for applications in chemical processing, petrochemical, and pharmaceutical industries where exposure to corrosive substances is common. The addition of copper provides further protection against sulfuric acid, and molybdenum enhances resistance to pitting and crevice corrosion.
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Alloy 20 bars are available in various forms, including round bars, square bars, and hexagonal bars. The choice of form depends on the specific requirements of the application. Round bars are commonly used for applications where a cylindrical shape is needed, while square and hexagonal bars are chosen for their unique properties in certain applications.
These bars are often used in the construction of chemical processing equipment, storage tanks, and piping systems. The versatility of Alloy 20 bars extends to various components such as bolts, nuts, and fasteners in corrosive environments. Their high strength and excellent corrosion resistance contribute to the reliability and longevity of equipment in challenging conditions.
Alloy 20 bars are machinable and can be easily fabricated, allowing for the creation of custom components to suit specific project requirements. The ease of fabrication makes them a preferred choice in industries where customization is crucial for the success of a project.
In addition to their corrosion resistance and mechanical properties, Alloy 20 bars are known for their stability at elevated temperatures. This makes them suitable for applications involving high temperatures, such as heat exchangers and furnace components.
ASTM B473
EN, DIN, JIS, ASTM, BS, ASME, AISI
3 ~ 800mm
H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients requirements
Hex Bar Size:- 2-100mm A/F
Flat Bar Size:- Thickness: 2 -100mm, Width: 10 to 500mm.
Square Bar Size:- 4 to 100mm
Rectangular Bar Size:- 33 x 30mm to 295 x 1066mm, Thickness: 3.0 to 12.0mm.
Hollow Bar Size:- 32mm OD x 16mm ID to 250mm OD x 200mm ID)
Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black
Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline
Round, Rod, T-Bar, Channel Bar, Precision Ground Bar, Flat Bar, Square, Blocks, Round Rod, Half Round Bar, Forged Hex bars, Forged Square Bars etc.
| STANDARD | WERKSTOFF NR. | UNS |
| Alloy 20 | 2.4634 | N08020 |
| Element | Content (%) |
| Nickel, Ni | 51 |
| Cobalt, Co | 18-22 |
| Chromium, Cr | 14-15.7 |
| Molybdenum, Mo | 4.50-5.50 |
| Aluminum, Al | 4.50-4.90 |
| Iron, Fe | 1 |
| Manganese, Mn | 1 |
| Silicon, Si | 1 |
| Titanium, Ti | 0.90-1.50 |
| Copper, Cu | 0.20 |
| Zirconium, Zr | 0.15 |
| Carbon, C | 0.12 |
| Sulfur, S | 0.010 |
| Boron, B | 0.0030-0.010 |
| Properties | Metric | Imperial |
| Tensile strength (precipitation hardened, value at room temperature) | 1150 MPa | 167000 psi |
| Yield strength (precipitation hardened, value at room temperature, @strain 0.200%) | 770 MPa | 112000 psi |
| Elongation at break (precipitation hardened) | 25% | 25% |
Oil & Gas Industrires
Chemical Industries
Construction Industries
Offshore Pipelines & Pipe Works
Petrochemical Industry
Shipbuilding Industries
Hydraulic Applications
Piping Systems
Refining Industry
Food Processing Industry
Pulp & Paper Industry
Power Plant Industry
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