Hastelloy G30 (UNS N06030) is a premier nickel-chromium-iron alloy engineered to deliver unmatched resistance to 'wet process' phosphoric acid and highly oxidizing chemical media. At TSM TECHNOLOGY CO, our precision-manufactured Hastelloy G30 Tube solutions are the industry standard for critical infrastructure in fertilizer, nuclear fuel reprocessing, and mixed-acid pickling facilities, offering exceptional service life where standard nickel-base alloys fail.
Comprehensive Overview of Hastelloy G30 (UNS N06030)
Hastelloy G30 is a sophisticated high-performance, nickel-chromium-iron-molybdenum-copper alloy specifically optimized with a high chromium content (30%). This metallurgical design grants it a superior level of resistance compared to standard nickel alloys like G-3 or Inconel 625, particularly in commercial phosphoric acid and complex environments containing nitric and hydrofluoric acids.
Hastelloy G30 pipe is a solid-solution strengthened material, meaning its resistance is derived from a meticulously balanced chemical matrix rather than complex heat treatments. For global engineers in the agrichemical and nuclear sectors, G30 is not just a material choice-it is a strategic asset for minimizing maintenance cycles and preventing catastrophic corrosion failures in evaporator tubes and reboilers.
hastelloy g30 Equivalent Grades
| Grade | UNS | Werkstoff Nr. |
| Hastelloy G-30 | DIN 2.4603 | UNS N06030 |
| Hastelloy G-35 | DIN 2.4643 |
UNS N06035 |
hastelloy g30 chemical composition
The unparalleled corrosion resistance of Hastelloy G30 Tube is a direct result of its strategic chemical matrix. The high chromium level provides the primary defense in oxidizing environments, while molybdenum, tungsten, and copper fortify the alloy against reducing conditions.
| Ni | Cr | Fe | Mo | Cu | Mn | Co | C | W | Si | P | S | Nb+Ta |
| Balance (approx. 43%) | 28.0-31.5 | 13.0-17.0 | 4.0-6.0 | 1.0-2.4 | 1.5 | 5.0 | 0.03 | 1.5-4.0 | 0.8 | 0.04 | 0.02 | 0.30-1.50 |
Technical Specifications & Mechanical Properties
Mechanical Properties
hastelloy g30 pipe products provide a robust combination of high tensile strength and excellent ductility, critical for complex pressure-retaining components.
| Ultimate Tensile Strength | min 586 MPa (85 ksi) |
| Yield Strength (0.2% Offset) | min 241 MPa (35 ksi) |
| Elongation at Break | min 30% |
| Hardness (Rockwell B) | Typical 80 - 90 HRB |
Solution Annealing: To ensure peak performance, G30 is solution-annealed at 1177°C (2150°F) and rapid-quenched.
Material Standards
TSM TECHNOLOGY CO ensures that every Hastelloy G30 Tube conforms to the following global specifications:
•Seamless Pipe & Tube: ASTM B622, ASME SB622
•Welded Pipe & Tube: ASTM B619, B626; ASME SB619, SB626
•Fittings: ASTM B366, B462
•Plate, Sheet & Strip: ASTM B582, ASME SB582
•Forgings: ASTM B462, ASME SB462
Hastelloy G30 Pipe Dimensions & Weight Specifications
We provide a comprehensive range of dimensions in both seamless and welded configurations to meet ANSI/ASME B36.10 and B36.19 standards.
| Nominal Size (in) | OD(mm) | SCH 10 Wall (mm) | SCH 40 Wall (mm) | SCH 80 Wall (mm) |
| 1/2" | 21.3 | 2.11 | 2.77 | 3.73 |
| 1" | 33.4 | 2.77 | 3.38 | 4.55 |
| 2" | 60.3 | 2.77 | 3.91 | 5.54 |
| 4" | 114.3 | 3.05 | 6.02 | 8.56 |
| 6" | 168.3 | 3.40 | 7.11 | 10.97 |
| 10" | 273.1 | 4.19 | 9.27 | 15.09 |
Corrosion Resistance in Industrial Media
The core justification for the higher cost of hastelloy g30 is its unparalleled resistance to commercial-grade industrial acids which often contain high levels of impurities like fluorides, chlorides, and iron ions.
Key Features and Advantages of G30 Material
Superior P2O5 Resistance
Exceptional life in concentrated 'wet process' phosphoric acid evaporators, outperforming Alloys 625 and G-3.
Oxidizing Acid Passivity
High chromium content ensures stable passivity in boiling nitric acid and mixed-acid pickling baths.
Localized Attack Immunity
Proven resistance to pitting and crevice corrosion underneath deposits in phosphoric acid slurry evaporators.
As-Welded Suitability
Resists grain-boundary precipitates in the heat-affected zone, allowing for use in the as-welded condition.
Chloride SCC Resistance
Virtually immune to chloride-induced stress corrosion cracking compared to 300-series stainless steels.
Nuclear Industry Reliability
Standard material for dissolvers and reboilers in high-activity waste reprocessing and fuel dissolution.
Key Industrial Applications for Hastelloy G30 Tubing
Hastelloy G-30 (UNS N06030) is a high-performance, nickel-chromium-iron alloy specifically engineered to outperform other metals in highly aggressive acidic environments. It is the premier choice for handling "wet process" phosphoric acid and complex mixtures of nitric, hydrofluoric, and sulfuric acids, providing unmatched durability where traditional stainless steels fail.
Fertilizer Production
Essential for evaporator tubes and heat exchangers in concentrated phosphoric acid plants.
Nuclear Industry
Used in dissolvers and reboilers for nuclear fuel recycling and high-activity waste management.
Acid Pickling Systems
Vital hardware for nitric/hydrofluoric pickling baths used in global stainless steel production.
Petrochemical & Mining
Applied in leaching systems where highly oxidizing mixed acids are used to recover precious metals.
Partner with TSM TECHNOLOGY CO: Global titanium Nickel Alloy suppliers
Choosing TSM means selecting 14 years of material innovation and a supply chain built for reliability. We export to over 70 countries, supporting massive industrial projects with precision.
•Certified Quality: AS9100 and ISO 9001 certified quality management systems ensure full material traceability (MTC).
•Advanced Testing: Every batch is verified through Ultrasonic (UT), Radiographic (RT), and Eddy Current (ET) testing to ensure integrity.
•Smart Factory: Our three specialized factories ensure a reliable monthly capacity of 300 tons, eliminating supply chain risks for your projects.
•Expert Consulting: Our team of materials specialists provides tailored advice on alloy selection and fabrication for your specific chemical environment.
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