Hastelloy G30 (UNS N06030, ASTM B575) and Hastelloy N (UNS N10003) Foil: Engineered for Oxidizing Corrosives
Table of Contents:
A major fertilizer facility in Southeast Asia faced catastrophic failure when alloy 625 heat exchangers corroded rapidly in hot phosphoric acid, causing spills and regulatory fines exceeding $2 million. Hastelloy G30 (UNS N06030, ASTM B575) and N (UNS N10003) foils address these vulnerabilities with tailored resistance to oxidizing acids and fluorides.
Specifications & Standards
Hastelloy G30 foil adheres to ASTM B575 for strip and sheet, ASME SB575 Section II, DIN/EN 2.4603 (NiCr30FeMoW), excelling in wet phosphoric acid up to 105°C. Hastelloy N (UNS N10003) supports high-temperature fluoride service, tested via ASTM G36 for SCC and G28 for intergranular attack. Global standards ensure interoperability for marine and pharma.
Full traceability includes heat analysis per ASTM E1019, hardness ASTM E18, and non-destructive ET/RT for fabricator confidence.
Product Forms & Availability
Foils available in 0.015-0.6 mm gauge, 300-1500 mm widths, solution-annealed per ASTM B575. G30 suits coil-to-coil processing for OEM heat exchanger linings; N in custom thin gauges for lab-scale power trials.
From Mumbai hubs, rapid dispatch includes plasma-cut sheets for industrial stores serving oil & gas fabricators.
Chemical Composition
| Element | Hastelloy G30 % | Hastelloy N % |
|---|---|---|
| Nickel | Balance | 70.0 min |
| Chromium | 28.0-31.5 | 6.0-8.0 |
| Iron | 13.0-17.0 | 12.0-16.0 |
| Molybdenum | 4.0-6.0 | 16.0-20.0 |
| Copper | 1.0-2.4 | - |
| Tungsten | 1.5-4.0 | - |
| Carbon | 0.03 max | 0.10 max |
Optimized Cr in G30 combats oxidation; N's balanced Mo-Cr ratio prevents embrittlement in molten fluorides.
Mechanical & Physical Properties
G30 offers 35% elongation, UTS 655 MPa min, density 8.1 g/cm³, CTE 16.3 µm/m·°C to 538°C. Excellent fabricability for pharma bellows.
N maintains strength above 700°C, with superior creep rupture for power gen turbine seals.
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.
Frequently Asked Questions
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.
Certifications & Compliance
ISO 9001:2015, NACE MR0103/MR0175, Lloyd's Register approved. Testing includes IGC per ASTM A262, hardness HB 95 max, with CE/PED marking for pressure equipment exports from India.
Conclusion
With robust standards compliance and field-proven resilience, Hastelloy G30 and N foils empower reliable operations in demanding sectors like chemical processing and power. Procurement teams benefit from verified quality and availability. What challenging environment awaits your next material selection?