At a massive chemical plant, sulfuric acid corrosion had long threatened the safety and productivity of reactors and piping until the engineering team adopted Alloy 20 Round Bars. With these superalloy bars, failures plummeted, maintenance cycles lengthened, and plant output stabilized. Today, procurement heads in chemical, pharma, marine, oil & gas, and power generation trust Aurico Alloys LLP Alloy 20 Round Bars for projects where only true corrosion resistance and certified mechanical strength will suffice.
Table of Contents:
Alloy 20 a nickel-iron-chromium austenitic alloy (UNS N08020, WNR 2.4660) is engineered to thrive in aggressive media including sulfuric, phosphoric, and nitric acids, chlorides, caustics, and seawater. Due to a fine balance of nickel (32–38%), chromium (19–21%), and copper (3–4%), with molybdenum and niobium stabilization, these bars deliver both exceptional resistance to pitting/crevice corrosion and robust stress cracking defence even above 500°C. Aurico Alloys LLP offers these bars in a full range of diameters and finishes for every critical OEM, process line, or fabrication need.
Available under ASTM B473 with full batch traceability, and recommended for pressure vessels, mixers, and heat exchangers, Alloy 20 bars are easily machined, welded, and cut to specification. Each bar is supplied with mill certificates, RoHS/REACH documents, and international packing for reliable use by engineers and fabricators across regulated sectors.
Unlike standard stainless or commodity alloys, Alloy 20 round bars protect assets from costly process disruptions especially in pharma, fertilizer, marine desalination, and petroleum. No matter the location or corrosive challenge, buyers trust Aurico for affordable, certified, and on-time supply, supporting the efficiency of hardware stores and major plant projects.
High-quality Alloy 20 Round Bars ready for industrial use.
Specification Overview
| Supplier & Manufacturer | Aurico Alloys LLP |
|---|---|
| Grade | Alloy 20 (UNS N08020, WNR 2.4660) |
| Standards | ASTM B473, ASME SB473 |
| Diameter Range | 4mm – 350mm |
| Length | up to 3000mm |
| Finishes | Bright, black, matt, rough turned, polished, ground |
| Delivery | CNC cut, precision machining, export packing, fast shipment |
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | N08020 |
| Werkstoff / EN number | 2.4660 |
| EN designation | — |
| Density | 8.08 g/cm3 |
| Rod and bar specification | ASTM B473 |
Identifiers and physical constants for Alloy 20. A dash means no such designation is published for this grade.
Stock & Availability
Alloy 20 round bars are stocked by Aurico Alloys LLP in common and special grades with length and diameter as per client need, plus mill certs, rapid domestic/export delivery, and full global sourcing.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Carbon (C) | — | 0.07 |
| Manganese (Mn) | — | 2.00 |
| Phosphorus (P) | — | 0.045 |
| Sulfur (S) | — | 0.035 |
| Silicon (Si) | — | 1.00 |
| Chromium (Cr) | 19.0 | 21.0 |
| Nickel (Ni) | 32.0 | 38.0 |
| Molybdenum (Mo) | 2.00 | 3.00 |
| Copper (Cu) | 3.00 | 4.00 |
| Niobium (Nb) | — | 1.00 (8×C min) |
Composition limits for Alloy 20. These are specification limits for the grade, not measured values for a lot; the mill test certificate supplied with your order states the actual analysis.
Mechanical & Physical Properties
| Tensile Strength (MPa) | Yield Strength (MPa) | Elongation (%) | Density (g/cm³) | Melting Point (°C) |
|---|---|---|---|---|
| 551 min | 241 min | 30 | 8.1 | 1443 |
Applications & Benefits
- Chemical processing: reactors, vessels, pipelines, pumps—superior sulfuric/chloride acid resistance
- Pharma: mixers, batch reactors, purity/sterilization lines under aggressive cleaning and caustics
- Marine: seawater fittings, desalination, shipboard hardware under chloride attack
- Oil & Gas: piping, tankage, pressure valves, severe service spares
- Power: heat exchangers, condensers, nuclear plant components
- Hardware/OEM/fabricators: cut, machined, and ready-to-use for plant or quick repair
FAQ & Search Trends
Global Export Destinations
We ship worldwide from Mumbai. See every destination we export to on our export markets page.
Domestic Supply Network Across India
We deliver across India from our Mumbai stockyard. See every city we supply on our supply locations page.
Conclusion
Aurico Alloys LLP Alloy 20 Round Bars empower chemical, pharma, marine, power, and oil & gas projects to thrive where ordinary bars fail combining world-class corrosion defence, complete certification, and trusted batch supply. Is your next process or facility ready for Alloy 20’s proven, certified performance?