Hastelloy® G30 Plates | UNS N06030 High-Chromium Ni Alloy for Phosphoric, Nitric & Mixed Acid Service
Table of Contents:
A fertilizer and phosphoric acid producer on India’s west coast had accepted that evaporator tubes, pickling tanks and agitators in its “wet process” P₂O₅ and mixed acid lines would last only a few seasons before severe under-deposit attack, nitric/phosphoric mixtures and chlorides turned 316L and duplex upgrades into deeply pitted, leak-prone liabilities. When the maintenance and procurement teams rebuilt key evaporator bodies, phosphoric acid concentrator tubes and nitric acid pickling hardware in Hastelloy® G30 Plates (UNS N06030, 2.4603), they moved to a high-chromium nickel-chromium-iron alloy whose data sheet describes it as “highly resistant to ‘wet process’ phosphoric acid” with superior corrosion resistance in commercial phosphoric acids and complex environments containing phosphoric, nitric and chloride-bearing acids, yield strength typically around 310–351 MPa at 20 °C, tensile strength around 678–710 MPa, elongation around 53–65% and impact energy over 400 J at room temperature; corrosion tables report rates as low as 0.01–0.05 mm/year in many nitric and organic acids, and significantly better resistance than stainless steels to chloride-induced stress corrosion cracking in P₂O₅ evaporators, turning previously short-lived equipment into long-life assets.
HASTELLOY® G-30® alloy (UNS N06030) is a nickel-chromium-iron material with alloying additions of molybdenum, tungsten, copper and niobium, developed as an improved version of alloy G-3 for superior resistance to “wet process” phosphoric acid and other oxidizing acid media. Technical summaries emphasise that G-30 shows superior corrosion resistance over most other nickel and iron-base alloys in commercial phosphoric acids, provides high resistance in nitric and nitric-containing mixtures due to its high chromium, and retains moderate resistance to reducing acids such as hydrochloric and sulfuric acids because of its molybdenum and copper contents.
For procurement heads, process and corrosion engineers, fabricators, OEMs and hardware or industrial supply stores in chemical, oil & gas, marine, pharma and power generation, Hastelloy G30 plates answer a very specific pain point: reliable performance in phosphoric, nitric and mixed acid environments where stainless steels, duplex grades and generic nickel alloys suffer rapid general attack, pitting or stress corrosion cracking, especially beneath deposits in evaporators and pickling lines. Typical room-temperature mechanical properties for G-30 plate and sheet include minimum tensile strength around 690 MPa, minimum yield strength around 310 MPa, elongation at least 40% in 2 inches and hardness around 90 HRB, with corrosion data indicating nitric acid 10% boiling corrosion rate around 0.01 mm/year and acetic acid 99% boiling around 0.03 mm/year, underlining its robustness in oxidizing process streams.
Aurico Alloys LLP can meet these needs as an affordable, authentic Hastelloy® G30 Plates supplier, manufacturer and stockist in India with exports abroad, supplying plate to UNS N06030 / DIN 2.4603 chemistry ranges in accordance with ASTM B582 / ASME SB582 and providing NABL-approved test certificates, corrosion data and fabrication support for phosphoric acid plants, fertilizer units, FGD systems, hazardous waste treatment facilities, pharma reactors and marine heat exchangers. This positioning aligns with search intent such as “Hastelloy G30 plate suppliers in Mumbai for phosphoric acid evaporator tubes”, “Corrosion resistant Hastelloy G30 plates for fertilizer production plants in India”, “ASTM B582 Hastelloy G30 plate stockist for nitric acid processing equipment”, “Hastelloy G30 plate price in India for pickling tank liners and agitators”, “High-chromium Hastelloy G30 plates for flue gas desulfurization (FGD) systems” and “Hastelloy G30 plate inventory in Mumbai with NABL approved test certificates”.
High-quality Hastelloy® G30 Plates ready for industrial use.
Specification Overview
| Supplier & Role | Aurico Alloys LLP – Hastelloy G30 plate manufacturers in India and Hastelloy G30 plate stockholders in Maharashtra for nuclear fuel reprocessing, fertilizer and chemical plants, with NABL-approved MTC-backed inventory. |
|---|---|
| Alloy Description | High-chromium nickel-chromium-iron alloy with Mo, W, Cu and Nb additions, engineered for excellent resistance to wet-process phosphoric acid and strong oxidizing acid mixtures, with moderate resistance to reducing acids. |
| UNS / Werkstoff / EN | UNS N06030, DIN / Werkstoff 2.4603, often referenced as NiCr30FeMo in EN designations. |
| Main Plate Standards | ASTM B582 / ASME SB582 for plate and sheet; G-30 is also covered by various product standards for tubing, fittings and welding consumables used alongside plates in P₂O₅ and nitric systems. |
| Thickness Range | 4.75 mm – 150 mm |
| Corrosion Focus | Optimised for commercial “wet process” phosphoric acid, nitric acid and complex mixed acids (e.g. HNO₃/HCl, HNO₃/HF) with significantly better performance than austenitic stainless steels and many Ni-Fe alloys. |
UNS & Equivalent Grades
| 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 |
| Plate, sheet and strip specification | ASTM B582 |
Identifiers and physical constants for Hastelloy G-30. A dash means no such designation is published for this grade.
Stock & Product Availability
As ASTM B582 Hastelloy G30 plate stockist for nitric acid processing equipment and Hastelloy G30 plate suppliers in Mumbai for phosphoric acid evaporator tubes, Aurico Alloys LLP can supply solution-annealed plate thicknesses covering evaporator shells, tube sheets, pickling tank liners, agitator blades and high-purity reactor shells, from 4.75 mm up to 150 mm and wider or custom-cut plates available on request. Design tables indicate minimum tensile strength of about 690 MPa, minimum 0.2% yield strength of about 310 MPa and minimum elongation of 40% in 2 inches in the annealed condition, matching typical ASTM B582 requirements for structural plate.
These capabilities align with queries such as “Hastelloy G30 plate price in India for pickling tank liners and agitators”, “Industrial Hastelloy G30 plate exporters in Mumbai for petrochemical refinery components”, “Hastelloy G30 plate stockholders in Maharashtra for nuclear fuel reprocessing”, “ASME SB582 Hastelloy G30 alloy plates for hazardous waste treatment facilities”, “Marine grade Hastelloy G30 plates for specialized seawater heat exchangers” and “Verified Hastelloy G30 plate exporters in Mumbai serving global mining industries”, giving procurement heads and supply stores confidence that both technical and documentation expectations will be met.
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 (Solution-Annealed Plate) | Typical Value – Hastelloy G30 / UNS N06030 |
|---|---|
| Ultimate Tensile Strength | ≈678–710 MPa at 20 °C, with minimum design value about 690 MPa in some data sheets. |
| 0.2% Yield Strength | ≈310–351 MPa at 20 °C, with typical minimum 310 MPa for plate. |
| Elongation | ≈53–65% at 20 °C, with minimum specification around 40% in 2 inches for plate. |
| Hardness | ≈90 HRB in solution-annealed condition, hardening only by cold work. |
| Young’s Modulus | ≈202 GPa at 20 °C, decreasing to about 187 GPa at 400 °C. |
| Impact Strength | ≈442 J at 20 °C and ≈527 J at -196 °C in Charpy tests, indicating high toughness over a wide temperature range. |
| Corrosion Metrics (selected acids) | Corrosion rates reported as ≈0.03 mm/year in acetic acid 99% boiling, ≈0.05 mm/year in formic acid 88% boiling, ≈0.01 mm/year in nitric acid 10% boiling and very low rates in many P₂O₅-containing mixtures, with best-in-class performance among Ni/Fe alloys in commercial phosphoric acids. |
| Localized Attack & SCC | Moderately resistant to chloride-induced localized attack under deposits in P₂O₅ evaporators and less susceptible than stainless steels to chloride-induced stress corrosion cracking in these environments. |
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.
- Fertilizer & Phosphoric Acid: Hastelloy G30 plates are widely used in phosphoric acid plants and fertilizer production, including phosphoric acid evaporator tubes, P₂O₅ concentrator shells and agitator components, where data show superior resistance to commercial phosphoric acid compared with stainless steels and most nickel alloys.
- Nitric, Mixed Acids & Pickling: ASTM B582 Hastelloy G30 plate stockist capability supports nitric acid processing equipment, metal pickling hardware and complex nitric/hydrochloric or nitric/hydrofluoric mixtures, with G-30 described as very resistant to oxidizing acids and mixed acid media.
- Oil, Gas & Power Generation: High-chromium Hastelloy G30 plates are used in flue gas desulfurization (FGD) systems, petrochemical refinery components, hazardous waste treatment facilities and, in some cases, nuclear fuel reprocessing and associated power-plant balance-of-plant systems where mixed acids and oxidising gases coexist.
- Pharmaceutical & Specialty Chemicals: Hastelloy G30 plate manufacturers in India supply high-purity chemical reactors, custom cut plate sizes for pharmaceutical centrifuge components and specialty acid handling systems where cleanliness and resistance to phosphoric/nitric blends are critical.
- Marine & General Export: Marine grade Hastelloy G30 plates are deployed in specialized seawater heat exchangers, shipboard acid cleaning systems and mining-process circuits, with verified Hastelloy G30 plate exporters in Mumbai serving global mining and offshore industries and maintaining inventories with NABL-approved test certificates and global-reach logistics.
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
We deliver across India from our Mumbai stockyard. See every city we supply on our supply locations page.
Conclusion
Hastelloy® G30 Plates from Aurico Alloys LLP, supplied to UNS N06030 / 2.4603 chemistry limits and ASTM B582 / ASME SB582 mechanical requirements, give chemical, oil & gas, marine, pharma and power-generation users high-chromium nickel alloy plates that combine superior resistance to wet-process phosphoric acid, excellent performance in nitric and complex oxidizing acids, moderate resistance to reducing acids and robust mechanical properties for demanding evaporators, reactors, pickling tanks, FGD units and seawater heat exchangers are your most aggressive phosphoric, nitric and mixed-acid assets still relying on stainless, duplex and generic nickel alloys instead of optimised Hastelloy G30 plates?