Hastelloy G-30 (UNS N06030)

Hastelloy G-30 Product Introduction

Overview:
Hastelloy G-30 is a high-performance nickel-chromium-iron-molybdenum-copper alloy designed for exceptional corrosion resistance in highly oxidizing and acidic environments. It offers superior performance over traditional alloys like G-3, especially in environments containing strong oxidizing agents, such as wet process phosphoric acid and highly acidic solutions.

Key Features:

Exceptional Corrosion Resistance:

• Superior resistance to phosphoric acid and highly oxidizing environments.
• Excellent performance in media containing nitric acid, ferric, and cupric salts.
• High resistance to pitting and crevice corrosion in chloride-containing environments.

Thermal Stability:

• Maintains structural integrity and corrosion resistance at elevated temperatures.

Fabrication and Weldability:

• Good workability for forming and machining complex shapes.
• Excellent weldability without the need for post-weld heat treatment.

Long Service Life:

• Reduces equipment maintenance and downtime in harsh chemical environments.

Chemical Composition (Typical):

• Nickel (Ni): ~43–48%
• Chromium (Cr): 28–31%
• Iron (Fe): 13–17%
• Molybdenum (Mo): 4–6%
• Copper (Cu): 1.5–2.5%
• Cobalt (Co): ≤5%
• Manganese (Mn): ≤1.5%
• Silicon (Si): ≤1%
• Carbon (C): ≤0.03%
• Phosphorus (P): ≤0.04%
• Sulfur (S): ≤0.04%

Applications:

Chemical Processing Industry:

• Equipment handling wet process phosphoric acid and other aggressive acids.
• Heat exchangers, tanks, and reactors in fertilizers, pesticides, and other chemical productions.

Pollution Control Systems:

• Components in scrubbers and stack liners exposed to acidic condensates.

Electroplating:

• Anodes and other components in electrochemical applications requiring high corrosion resistance.

Pulp and Paper Industry:

• Resistant to harsh chemicals used in bleaching and other processes.

Marine Applications:

• Ideal for seawater-facing components and equipment in chloride-rich environments.

Physical Properties:

• Density: 8.11 g/cm³
• Melting Range: 1345–1370°C (2453–2498°F)
• Thermal Conductivity: 10.1 W/m·K (at room temperature)
• Elastic Modulus: 205 GPa

Standards and Specifications: Hastelloy G-30 is manufactured in compliance with major international standards, including:

• ASTM B582: Plate, Sheet, and Strip
• ASTM B619: Welded Pipe
• ASTM B622: Seamless Pipe and Tube
• ASTM B626: Welded Tube

Advantages:

• Superior corrosion resistance compared to other alloys in oxidizing acid environments.
• Excellent mechanical properties for long-term durability.
• Easy to fabricate and weld for complex designs.
• Cost-effective solution for minimizing material degradation in aggressive environments.

Conclusion:
Hastelloy G-30 is a reliable and versatile choice for industries facing highly oxidizing and acidic environments. With its unique blend of corrosion resistance, strength, and workability, it ensures long service life and cost efficiency in demanding applications.

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