Nickel Alloy GH3030 tubes

Nickel Alloy GH3030丨XH78T

Nickel alloy GH3030 is a nickel-based high-temperature alloy known for its exceptional high-temperature strength, good thermal stability, and excellent corrosion resistance. The alloy demonstrates exceptional performance in extreme operating environments such as high temperatures, high pressures, and strong corrosive media, making it an ideal material choice for aerospace, petrochemical, nuclear energy, and power generation equipment, etc.

The ability of GH3030 alloy to maintain stable mechanical properties at temperatures as high as 1,100°C is largely attributed to its resistance to oxidation at elevated temperatures and its creep resistance.

Nickel Alloy GH3030 / XH78T / ИИ435 / W.Nr 2.4983

Nickel alloy GH3030 maintains good strength and toughness over extended periods at elevated temperatures, making it ideal for components operating in high-temperature environments. It performs well in a wide range of corrosive environments, including oxidizing, reducing, and neutral environments. The chromium and molybdenum elements in the alloy increase its resistance to chloride stress corrosion cracking (SCC) and pitting. In addition, the alloy’s high nickel content contributes to its corrosion resistance in acidic environments.

GH3030 alloy has good machinability and can be shaped and machined by conventional metalworking techniques. It also has excellent weldability and can be processed by a variety of welding techniques with little change in mechanical properties after welding.

Applications:

GH3030 alloy is mainly used for turbine engine combustor components working below 800 °C and other high-temperature components requiring oxidation resistance but low load below 1100 °C1. It is also used in aircraft and rocket engine components, particularly in hot sections where high-temperature strength is crucial3. It may be employed in chemical processing equipment, such as reactors and heat exchangers3. It finds use in industrial furnaces and heat-treating equipment3.

Normal product forms: wires, rods, bars, forgings, strips, sheets, plates, and pipes.

Specifications/Standard: GB/T GH3030

Chemical Composition:

  • Nickel (Ni): Balance

  • Chromium (Cr): 19.0-22.0%

  • Manganese (Mn): 0.7% max

  • Iron (Fe): 1.5% max

  • Titanium (Ti): 0.15-0.35%

  • Copper (Cu): 0.2% max

  • Aluminium (Al): 0.15% max

  • Carbon (C): 0.12% max

  • Silicon (Si): 0.8% max

  • Sulfur (S): 0.02% max

  • Phosphorus (P): 0.03% max

Physical Constants and Thermal Properties

  • Density: 524 kg/dm³

  • Specific heat: 775 J/kg·°C

  • Thermal conductivity: 13 W/m·°C

  • Electric resistance: 34 µΩ·cm

  • Melting temperature range: 1374 ~ 1420°C

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