Common alloy production standards:
1.ASTM Standards: ASTM International has published several standards related to GH1140 alloys, including ASTM B637 (GH1140 Cobalt-based Superalloy Rods and Wires), ASTM B670 (GH1140 Cobalt-based Superalloy Plates, Sheets, and Strips), and ASTM B670 (GH1140 Cobalt-based Superalloy Plates and Strips).
2.AMS Standards: The Aerospace Materials Specification (AMS) Committee has developed some standard specifications for GH1140 alloys, such as AMS 5589 (GH1140 cobalt-based superalloy tubing) and AMS 5662 (GH1140 cobalt-based superalloy forgings and forging billets).
Mechanical properties: 1Yield Strength (Tensile Strength): Minimum yield strength of 930 MPa (135,000 psi) at room temperature; At high temperatures (650 or 1200°F), the yield strength is approximately 550 MPa (80,000 psi).
2.Tensile Strength (Breaking Strength): Minimum tensile strength is 1030 MPa (150,000 psi).
3.Elongation: Minimum elongation of 20% at room temperature.
4.Hardness: At room temperature, the hardness of the alloy is usually around BHN 331 (Rockwell C).
The heat treatment process can improve the strength and heat resistance of the alloy.
1.Solution treatment: GH1140 alloy is first heated to about 980-1000 (1800-1850°F) and held for a period of time for homogenization. Then, it is quickly cooled to room temperature or quenched with water to maintain a homogeneous structure of the material.
2.Precipitation hardening: After solution treatment, the GH1140 alloy is reheated to approximately 720-780 (1330-1435°F), held for a period of time, and then cooled by air or oil. This process helps to precipitate the strengthening phase (eg"Harmony'phase), improve the strength and heat resistance of the alloy.
Main areas of application:
1.Aerospace industry: commonly used in aero engine parts, gas turbine blades, combustion chamber components, turbine shafts and other components in high-temperature and high-pressure working environments. Its excellent heat resistance and high temperature strength make it one of the most important materials in the aerospace industry.
2.Energy industry: It is widely used in the energy industry, such as gas turbines, nuclear reactor components, petrochemical equipment and other equipment and components that need to withstand high temperatures and corrosive environments.
3.Chemical industry: Due to its corrosion resistance and heat resistance, it is used in the chemical industry to manufacture reactors, heat exchangers, pipelines, valves and other corrosion-resistant equipment, and maintain stable performance under high temperature and high pressure conditions.
4.Automobile manufacturing: It can be used in the manufacture of automobile engine parts, such as turbine blades, exhaust pipes, air intake system parts, etc., to improve its performance under high temperature and high pressure conditions.
5.Other fields: It is also used in the manufacture of ship parts, oil drilling equipment, aerospace devices, chemical industry equipment and other fields to meet the requirements of special working environments.
In general, GH1140 alloy has a wide range of applications in fields that require high temperature resistance, corrosion resistance and high strength requirements, and is an important superalloy material.