UNS N06030 (Hastelloy G-30)
Generic Name & Other Designation
Hastelloy G-30®, Alloy G-30, Nickel Alloy G-30, W.Nr. 2.4603, NiCr30Fe15Mo5, NC30FeMo
Product Overview
UNS N06030 (Alloy G-30) is a high-chromium nickel-base alloy formulated to resist complex industrial acids that quickly degrade conventional stainless steels and low-chromium nickel alloys. Containing 30% chromium combined with balanced molybdenum, tungsten, and iron, UNS N06030 exhibits exceptional durability against industrial chemical blends.
It is particularly renowned in nuclear fuel reprocessing, fertilizer manufacturing, and pickling operations where mixtures of nitric, hydrofluoric, sulfuric, and phosphoric acids are encountered simultaneously.
Key Highlights
✅ Mixed-Acid Versatility: Unrivaled resistance to mixed acids (e.g., HNO3/HF, H2SO4/HNO3).
✅ Phosphoric Acid Superiority: Outperforms standard stainless alloys in commercial fertilizer acids containing fluorides.
✅ High Ductility & Formability: Excellent cold-workability and hot-forming characteristics.
✅ Weld HAZ Protection: Highly resistant to grain-boundary precipitation during fabrication welding.
Chemical Composition & Physical Properties
Chemical Composition (wt%)
Element | Ni | Cr | Fe | Mo | W | Cu | Nb+Ta | Co | C | Si | Mn |
Min (%) | Bal. | 28.0 | 13.0 | 4.0 | 1.5 | 1.0 | 0.3 | — | — | — | — |
Max (%) | (~43.0) | 31.5 | 17.0 | 6.0 | 4.0 | 2.4 | 1.5 | 5.0 | 0.03 | 1.0 | 1.5 |
Physical & Mechanical Properties
Parameter | Value / Standard (Solution Annealed) |
Density | 8.22 g/cm³ |
Melting Range | 1330°C – 1380°C |
Tensile Strength (Rm) | ≥ 690 MPa |
Yield Strength (0.2%, Rp0.2) | ≥ 240 MPa |
Elongation (A5) | ≥ 30% |
Available Forms
Plates & Sheets: Mill plates, sheared sheet stock, precision cut blanks.
Piping Systems: Seamless tubes, welded pipes, butt-weld fittings.
Bar Stock: Hexagonal, square, and round forging bars.
Custom Fabrications: Welded rings, flanges, and specialized pump casings.
Typical Application Scenarios
Stainless Steel Pickling: Tanks, heating coils, and piping using nitric/hydrofluoric acid pickling baths.
Nuclear Fuel Operations: Dissolvers, evaporators, and holding vessels in radioactive material processing.
Commercial Acid Manufacture: Phosphoric acid concentration systems and fluorine-containing acid lines.
Pesticide Synthesis: Reaction columns handling mixed organochlorine and acid streams.
Quality Assurance & Testing
Intergranular corrosion resistance validated via ASTM G28 testing protocols.
Dimensional tolerances and non-destructive testing (NDT) certified for ASME code compliance.
Third-party inspection (TUV, SGS, Bureau Veritas) available upon customer request.
Supplier Information (BELNADE)
Engineered for critical industrial installations, UNS N06030 products are supplied worldwide by BELNADE. BELNADE provides raw material certification, custom fabrication services, and expert advice on material substitution for high-corrosion applications.
Partner with BELNADE for Acid-Resistant Alloy Solutions
📧 Email: info@belnade-material.com
🌐 Website: www.belnade-material.com
💬 Mobile/ WhatsApp: +86 158-0040-6687