1. What are the characteristics of GH3039 Superalloy?
: It is a nickel-chromium-based alloy with nickel (Ni) as the matrix element (content >=70%) and chromium (Cr) as the main alloying element (content around 19-22%). It also contains small amounts of titanium (Ti), aluminum (Al), and iron (Fe) to optimize its structure and properties.
: The high chromium content forms a dense and stable chromium oxide (Cr₂O₃) film on the alloy surface at high temperatures, which effectively prevents further oxidation and corrosion of the matrix.
: It maintains good strength, toughness, and creep resistance at elevated temperatures (up to 900℃). The addition of Ti and Al promotes the precipitation of intermetallic phases (e.g., ' phase), which enhances the alloy's high-temperature strength.
: It has good cold and hot working properties, allowing for processes such as forging, rolling, drawing, and welding. This makes it easy to manufacture into various components like sheets, bars, pipes, and forgings.
: It can be welded using common methods (e.g., argon arc welding, resistance welding) without significant degradation of properties in the weld zone, making it suitable for fabricating welded structures.
2. What is the yield strength of GH3039 Superalloy?
Room Temperature (20℃): Under the standard heat treatment condition (solution annealing at 980-1020℃, rapid cooling), the yield strength is approximately >=275 MPa.
:
At 600℃: Yield strength is about >=240 MPa.
At 800℃: Yield strength is about >=140 MPa.
At 900℃: Yield strength decreases to approximately >=80 MPa, but still maintains sufficient strength for light-load high-temperature components.
3. What is the tensile strength of GH3039 Superalloy?
Room Temperature (20℃)>=630 MPa.
:
At 600℃: Tensile strength is about >=540 MPa.
At 800℃: Tensile strength is about >=340 MPa.
At 900℃: Tensile strength is about >=180 MPa, which is sufficient for applications such as high-temperature furnace parts and exhaust components.
