1. What material is Hastelloy G30?
2. What is the chemical composition of Hastelloy G30?
Nickel (Ni): 43.0–47.0% (base element, ensuring alloy stability)
Chromium (Cr): 28.5–31.5% (enhances oxidation and general corrosion resistance)
Iron (Fe): 14.0–17.0% (improves mechanical strength and cost-effectiveness)
Molybdenum (Mo): 4.0–6.0% (boosts resistance to pitting and crevice corrosion)
Copper (Cu): 1.0–2.4% (enhances resistance to sulfuric acid and other reducing acids)
Tungsten (W): 1.5–4.0% (aids in corrosion resistance and mechanical properties)
Carbon (C): Maximum 0.010% (minimizes carbide precipitation and intergranular corrosion risk)
Silicon (Si): Maximum 0.80%
Manganese (Mn): Maximum 1.00%
Phosphorus (P): Maximum 0.020%
Sulfur (S): Maximum 0.015%
3. What is the hardness of Hastelloy G30?
Annealed state (most common for corrosion-focused applications):
Brinell Hardness (HB): Approximately 210–240
Rockwell B Hardness (HRB): Approximately 95–100
Cold-worked state (for improved strength, less common for corrosion use):
Hardness can increase by 20–30% compared to the annealed state, but this may reduce corrosion resistance slightly.
