GH3039

Composition

GH3039 high temperature alloy is mainly composed of elements such as nickel, chromium, molybdenum and iron, and partially contains metal elements such as aluminum and titanium. The unique combination of these elements gives it a variety of excellent performance.

The performance characteristics

Magnetic properties

Low Temperature Magnetism

In the room temperature to low temperature range (usually -196°C to room temperature), it shows weak magnetic properties, and its magnetic induction strength can be maintained at about 0.02T or less. This low magnetism makes them more reliable for use in medical equipment and aerospace applications, avoiding the negative effects of magnetic interference on equipment.

High Temperature Magnetism

At high temperatures (over 600°C), the magnetic behavior is extremely stable and its magnetic induction is maintained at very low levels, typically below 0.005T. This makes GH3039 more reliable in high-temperature environments, such as high-temperature components in aircraft engines and gas turbine blades.

Mechanical Properties

Tensile strength

The tensile strength at room temperature usually reaches about 1000MPa, and even at high temperatures (above 800°C) can still maintain a high tensile strength, thanks to its dual mechanism of solid solution strengthening and precipitation strengthening. This high strength allows it to perform well even when subjected to large loads at high temperatures.

Elongation

Despite its excellent strength, its elongation remains above 20%, which is an excellent performance for a high-temperature alloy, and facilitates its moldable processing and forming under complex working conditions.

Hardness

In high temperature alloys, hardness is often used as an important indicator to assess the wear resistance of the material, GH3039 in the high temperature state of the hardness stability is good, usually between 300 - 400HV, which makes it in the complex friction and abrasion environment with excellent wear resistance.

Oxidation resistance

Oxidation weight gain rate

At 1000°C, the oxidized weight gain rate of GH3039 alloy is only 0.05mg/cm²-h, showing excellent oxidation stability.

Oxide skin formation time

Under the condition of 1200°C, GH3039 alloy surface forms dense oxide skin for more than 200 hours, which effectively extends the service life of the material.

Oxide structure

The oxide skin is mainly composed of Al₂O₃ and Cr₂O₃, the dense structure effectively prevents the depth of the oxidation reaction, and improves the antioxidant capacity of the material.

Creep performance

Creep rate

Under the stress conditions of 850°C and 100MPa, the creep rate of GH3039 alloy is about 1.5×10-⁷h-¹, showing a low tendency of creep deformation.

Creep fracture life

At 1000 ° C and 75 MPa stress level, GH3039 alloy creep fracture life of up to 5000 hours or more, showing its excellent stability and reliability at high temperatures under long-term loading.

Corrosion resistance

It has good corrosion resistance to acidic, alkaline and chloride environments, and maintains stable performance in various corrosive environments, resisting acidic, alkaline and oxidizing media. This makes it widely used in chemical and petrochemical industries, and also commonly used in chemical equipment, petroleum pipelines and other corrosive environments.

Hydrogen corrosion resistance

Hydrogen may cause metal embrittlement and hydrogen embrittlement at high temperature and pressure, but GH3039 alloy has excellent hydrogen embrittlement resistance and is suitable for hydrogen-rich environments.

Manufacturing Process

The manufacturing process of GH3039 high-temperature alloy requires precise control, and its production process includes a number of links such as smelting, casting, hot working, welding and heat treatment. Each link has extremely strict requirements on temperature, pressure, time and other parameters, so as to ensure the purity, uniformity and integrity of the alloy. The manufacturing process of this alloy not only puts high demands on the equipment and process, but also requires an experienced technical team to monitor and control the whole process.

Applications

In the aerospace field, it is commonly used in the manufacture of high-temperature parts of aviation engines, such as combustion chambers, turbine blades, etc., which can ensure the stable operation of the engine at high temperature and high pressure;

In the energy field, such as gas turbine turbine blades and other high-temperature components, it can withstand extreme high temperatures and high stress environment, to ensure the safe operation and performance stability of equipment;

In the petrochemical field, it is widely used in oil and gas extraction, chemical reactors and catalysts, as well as in chemical equipment, petroleum pipelines, and other places where there are strict requirements for corrosion resistance of materials;

In the field of nuclear industry, due to its excellent radiation resistance, it can be used in the manufacture of pipes, vessels and other key components in nuclear reactors.