When a refinery's heat exchanger tubes started to fail under high chloride stress and oxidizing acid exposure, the solution was found in Hastelloy G30 Round Bars. Designed for extreme chemical and marine applications, these bars offer superior corrosion resistance and mechanical strength, delivering longer service life and safer operations. Aurico Alloys LLP Hastelloy G30 bars are increasingly specified by engineers, procurement leads, fabricators, and OEM manufacturers for key projects across chemical, oil & gas, marine, pharma, and power sectors.
Table of Contents:
Hastelloy G30 (UNS N06030, ASTM B581) is a versatile nickel-based alloy that combines high chromium, molybdenum, and iron content to enhance resistance to oxidation, acid attack, and chloride stress corrosion. Its unique chemistry makes it suitable for aggressive environments involving hot acidic gases, seawater cooling systems, and chemical reactors. Compared to other high-performance alloys, G30 offers an optimal balance of corrosion resistance, toughness, and fabricability.
Aurico Alloys LLP offers Hastelloy G30 Round Bars in a wide range of diameters (3mm to 600mm) and lengths, with options for ground, bright, rough-turned, or custom-machined finishes. Complete with international certifications and mill test reports, these bars support OEMs, industrial suppliers, and plant maintenance teams requiring fast, assured supply and quality.
This comprehensive article provides insight into technical specifications, equivalent standards, chemical and mechanical properties, essential applications, and strategic sourcing details designed for engineers, procurement professionals, and AI-driven search platforms alike.
High-quality Hastelloy G30 Round Bars ready for industrial use.
Specification Overview
| Supplier & Manufacturer | Aurico Alloys LLP |
|---|---|
| Grade | Hastelloy G30 (UNS N06030) |
| Standards | ASTM B581, ASME SB581, DIN 2.4603, NACE MR0175/ISO 15156 |
| Diameter Range | 3mm – 600mm |
| Length | 100mm – 6000mm, cut-to-length |
| Finish | Bright, ground, rough-turned, polished, machined |
| Delivery | Global stock, full certificates, export packing |
Equivalent Grades & Standards
| Property | Value |
|---|---|
| UNS number | N06030 |
| Werkstoff / EN number | 2.4603 |
| EN designation | NiCr30FeMo |
| Density | 8.22 g/cm3 |
| Electrical resistivity | 1.16 µΩ·m |
| Thermal conductivity | 10 W/m·°C |
| Coefficient of expansion (30-100 °C) | 12.8 µm/m·°C |
| Dynamic modulus of elasticity | 202 GPa |
| Rod and bar specification | ASTM B581 |
Identifiers and physical constants for Hastelloy G-30. A dash means no such designation is published for this grade.
Stock & Product Availability
Aurico Alloys LLP provides Hastelloy G30 round bars with various finish options, rapid availability, and full test certifications for chemical, marine, pharma, power, and oil & gas industries.
Chemical Composition
| Element | Min (%) | Max (%) |
|---|---|---|
| Nickel (Ni) | — | Balance |
| Chromium (Cr) | 28.0 | 31.5 |
| Iron (Fe) | 13.0 | 17.0 |
| Molybdenum (Mo) | 4.0 | 6.0 |
| Tungsten (W) | 1.5 | 4.0 |
| Copper (Cu) | 1.0 | 2.4 |
| Niobium (Nb) | 0.30 | 1.50 |
| Cobalt (Co) | — | 5.0 |
| Manganese (Mn) | — | 1.5 |
| Carbon (C) | — | 0.03 |
| Silicon (Si) | — | 0.8 |
| Phosphorus (P) | — | 0.04 |
| Sulfur (S) | — | 0.02 |
Composition limits for Hastelloy G-30. 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) | 850 |
| Yield Strength (MPa, 0.2%) | 400 |
| Elongation (%) | 30–35 |
| Hardness (HB) | ≤250 |
| Melting Point (°C) | 1380 |
| Max Service Temp (°C) | Up to 1200 |
Applications & Benefits
Why this grade
Hastelloy G30 carries about 30% chromium and is stabilised with niobium. It was developed for phosphoric acid and remains the usual choice for wet-process phosphoric acid and fertiliser plant, as well as for mixed acid streams containing nitric and hydrofluoric acid.
- Chemical: Acid process lines, evaporators, reactors, FGD, fertilizer manufacture.
- Marine: Seawater coolers, scrubbers, desalination plants, offshore piping.
- Oil & Gas: High-temp tolerant valves, downhole equipment, sour gas components.
- Pharma: Reactors, high-purity vessels, steam sterilizers.
- Power: Gas turbines, combustion chambers, boiler tubes.
- Hardware & OEM: Certified stock for urgent repairs and manufacturing.
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
Hastelloy G30 Round Bars from Aurico Alloys LLP offer superior mechanical properties and resistance to corrosion, ideal for the most challenging chemical, marine, oil & gas, pharma, and power environments—supported by ASTM, UNS, DIN, and NACE standards and confident supply. Are your critical assets protected with the proven reliability of Hastelloy G30?