ASTM B829 Nickel Alloy GH3030 Bright Annealed Seamless Pipe
ASTM B829 Nickel Alloy GH3030 Bright Annealed Seamless Tubing is a high-temperature, high-strength pipe manufactured from a nickel-chromium-based alloy (GH3030) that meets the general requirements for ASTM B829 Nickel Alloy Seamless Tubing. "Bright annealing" refers to a specific heat treatment process that results in a smooth, bright, and glossy surface, making it ideal for applications requiring excellent oxidation resistance and high-temperature strength in harsh environments such as gas turbines, chemical processing, and nuclear reactors.
What is GH3030 alloy?
GH3030 solid-solution-strengthened superalloy is an early-developed 80Ni-20Cr solid-solution-strengthened superalloy. This alloy has a simple chemical composition and exhibits good hot strength and high ductility below 800°C. It also offers excellent resistance to oxidation, thermal fatigue, cold stamping, and welding. After solution treatment, the alloy forms a single-phase austenite, maintaining a stable microstructure during service. The primary product is cold-rolled sheet, but deformed products such as bars, rings, wire, and tubes are also available. This alloy is primarily used in turbine engine combustor components operating below 800°C, as well as other high-temperature components operating below 1100°C that require oxidation resistance but are subject to low loads.
Nickel Alloy GH3030 Pipe Physical /chemical composition:
Physical Properties
| Property | Value |
|---|---|
| Density | 8.4 g/cm³ |
| Melting Range | 1374-1420 °C |
Chemical Composition (Weight %)
| Element | Minimum Content | Maximum Content |
|---|---|---|
| Nickel (Ni) | Balance | - |
| Iron (Fe) | - | 1.5 |
| Chromium (Cr) | 19 | 22 |
| Phosphorus (P) | - | 0.03 |
| Aluminum (Al) | - | 0.15 |
| Titanium (Ti) | 0.15 | 0.35 |
| Carbon (C) | - | 0.12 |
| Manganese (Mn) | - | 0.7 |
| Silicon (Si) | - | 0.8 |
| Sulfur (S) | - | 0.02 |
Key Features
ASTM B829:
This is a general standard that covers the manufacturing processes and material requirements for a wide range of seamless nickel and nickel alloy tubing.
GH3030 Alloy:
A high-temperature nickel-base alloy known for its solid solution strengthening properties.
Composition: Primarily nickel, chromium, and iron, with minor amounts of other elements.
Properties: Excellent high-temperature strength, good oxidation resistance, high ductility, and good thermal fatigue resistance.
Bright Annealed Surface:
The bright annealing heat treatment results in a bright, polished, and smooth surface.
Seamless Tube:
Seamless tubing is manufactured without welds, which is crucial for high-pressure, high-temperature applications.
Typical Applications:
Aerospace: High-temperature components on aircraft.
Gas Turbines: Used in extreme environments due to its excellent high-temperature strength.
Chemical Processing: Heat exchangers and piping in corrosive environments.
Nuclear Reactors: Components requiring high reliability under high temperatures.
Oil and Gas: Pipes used in corrosive, high-pressure, and high-temperature production projects.
Gnee Steel specializes in the production and sale of various nickel-based alloys, including Nickel 201, Nickel 202, Hastelloy C-276, Hastelloy C-22, Hastelloy B, Hastelloy C-4, Inconel Alloy 600, Inconel 625, Inconel 718, Inconel X-750, Incoloy Alloy 800, Incoloy 800H/HT, Incoloy 825, Monel Alloy 400, Monel K500, and high-temperature alloys. Gnee Steel's products are widely used in aerospace, chemical, electric power, automotive, and nuclear energy applications, and we can provide customized alloy solutions tailored to customer needs. For alloy pricing inquiries or customized alloy solutions, please contact us for a quote at ss@gneemetal.com.
