When process plants or offshore equipment fail due to corrosion, repairs aren’t just expensive they can halt entire operations. After yet another shutdown in a refinery’s critical spring application, their engineers sought a new solution: Elgiloy Round Bars. Renowned for thriving in hostile acid, seawater, and sour gas environments, these cobalt alloy bars are favored for maximum uptime and lowest lifetime cost across chemical, oil & gas, marine, pharma, and power generation sectors. Procurement heads, engineers, fabricators, and OEMs now depend on Aurico Alloys LLP for best-in-class Elgiloy solutions with full certification and trusted technical support.
Table of Contents:
Elgiloy (UNS R30003, ASTM F1058, W.Nr 2.4711) is a high-performance cobalt-chromium-nickel alloy stabilized with molybdenum and iron, offering resilience against acids, brine, and oxidizers far surpassing typical stainless steels. Its superalloy composition delivers ultimate resistance to stress corrosion cracking, oxidation, and fatigue even under aggressive cycling and high temperatures (up to 850°F / 454°C). Compared to standard grades that suffer in sour gas, marine, and acid process lines, Elgiloy round bars endure where others fail, enabling safe, reliable, and compliant operations.
Aurico Alloys LLP stocks Elgiloy round bars in a range of diameters and custom lengths, all supplied with full material test certificates and traceability to ASTM, EN, NACE MR0175 (ISO 15156), and AMS 5833/5834 specs. Their precision machining and robust export packaging mean rapid deployment for urgent spares or project schedules in hardware supplies and OEM installations. Industries benefit from low maintenance, high fatigue strength, and long-term assurance that standard products cannot match.
This alloy’s blend of exceptional mechanical strength, proven chemical resistance, and versatility for springs, valves, instrument parts, medical, and power components has made Elgiloy round bars mission-critical where safety and uptime are non-negotiable.
High-quality Elgiloy Round Bars ready for industrial use.
Specification Overview
| Supplier & Manufacturer | Aurico Alloys LLP |
|---|---|
| Grade | Elgiloy (UNS R30003) |
| Standards | ASTM F1058, AMS 5833/5834, NACE MR0175/ISO 15156, W.Nr 2.4711, DIN 17744 |
| Diameter Range | 6mm – 400mm |
| Length | Up to 12 meters |
| Finish | Black bar, bright bar |
| Delivery | Supplied from stock or arranged against order, depending on grade and size; availability and lead time confirmed at quotation. Full MTC, export packaging. |
| Price | INR 20,000 – 40,000 per kg. Indicative USD 235 – 471 per kg; quoted against grade, form, size and quantity. |
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | R30003 |
| Werkstoff / EN number | 2.4711 |
| EN designation | — |
| Density | 8.30 g/cm3 |
| Modulus of elasticity (20°C) | 190 GPa |
| Modulus of rigidity (20°C) | 77.2 GPa |
| Coefficient of expansion (20-300°C) | 15.2 µm/m·°C |
| Electrical resistivity (20°C) | 99.6 µΩ·cm |
| Thermal conductivity (20°C) | 12.5 W/m·K |
Identifiers and physical constants for Elgiloy. A dash means no such designation is published for this grade.
Stock & Product Availability
Elgiloy round bars from Aurico Alloys LLP available in standard and custom sizes, delivered with industry-certified paperwork and global shipment readiness for process, marine, pharma, energy, and hardware supply needs.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Carbon (C) | — | 0.15 |
| Manganese (Mn) | 1.5 | 2.5 |
| Silicon (Si) | — | 1.20 |
| Phosphorus (P) | — | 0.015 |
| Sulfur (S) | — | 0.015 |
| Chromium (Cr) | 19.0 | 21.0 |
| Nickel (Ni) | 14.0 | 16.0 |
| Cobalt (Co) | 39.0 | 41.0 |
| Molybdenum (Mo) | 6.0 | 8.0 |
| Beryllium (Be) | — | 0.001 |
| Iron (Fe) | — | Balance |
Composition limits for Elgiloy. 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
| Property | Typical Value |
|---|---|
| Tensile Strength (MPa) | 970–1410 |
| Yield Strength (MPa) | 480–696 |
| Hardness (Rockwell B) | Up to 97 |
| Elastic Modulus (GPa) | 189 |
| Operating Temp (°C) | -184 to +454 |
| Fatigue strength (MPa) | 220–290 (spring temper) |
Applications & Benefits
- Chemical: Digesters, acid process equipment, springs, instrument tubing, reactors.
- Oil & Gas: Sour service springs, downhole control line, valve parts, tubing in H2S, CO2, acid.
- Marine: Pumps, fasteners, fittings exposed to seawater, critical spring elements.
- Pharma: Medical devices, sterilization components, instrument springs in corrosive media.
- Power: Turbine blades, heat exchangers, gas turbines, spring contacts with high temp/cycling.
- Hardware Supply: Rapid replacement spares, precision-machined bars for OEMs, trusted for lifetime reliability.
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
Elgiloy Round Bars from Aurico Alloys LLP provide unparalleled strength, stellar corrosion resistance, and industry-compliant certification for chemical, oil & gas, marine, pharma, power, and supply chain professionals, enabling safer and more reliable operations for every critical application. Are your assets performing up to Elgiloy’s standards in today’s challenging environments?