What material is Inconel783?

Inconel783 is a low thermal expansion ultra-high temperature alloy alloy 783 GH6783 (GH783) UNS R30783, GH6783 (GH783) superalloy.

GH6783 is a Co-Ni-Fe-based precipitation-hardening ferromagnetic oxidation-resistant expansion deformation superalloy with a service temperature of less than 750°C. The alloy is strengthened by adding a large amount of aluminum and niobium elements, and precipitating '-Ni3(Al,Nb) diffuse strengthening phase and block-Ni Al phase in aging. The alloy can reach full oxidation resistance level at 750, and has excellent mechanical properties at room temperature, high temperature, low coefficient of thermal expansion and low density.

During thermal denaturation, the fine grain size is controlled by precipitation-Ni Al phase. The microalloyed alloy has good hot working properties and cold forming process properties. The main products are bars, cake blanks, rings, cold-rolled sheets and strips.

Alloys have been used in the manufacture of gap control components such as sealing rings, load-bearing rings and receivers for advanced aero engines. Because the alloy has the oxidation resistance, excellent mechanical properties and low thermal expansion coefficient of high-temperature alloys, it can also be applied to bolts and other fasteners and load-bearing shafts and other components used at high temperatures such as ground gas turbines, as well as the air ducts of rocket engines.

Compared with other low-expansion superalloys GH2907 and GH2909, GH6738 alloy has excellent oxidation resistance and low density. The alloy has excellent properties and microstructure stability below 700, but poor thermal stability above 750.

GH6783 (GH783) is extracted from GB T 14992, see table.

Heat treatment regime.

Extracted from AMS 5940, Q GYB 528, Q GYB 05066 and Q 6S 2040, the standard heat treatment regime for each variety is:

a Bars, forgings and rings, 1115 5 ac (or faster cooling) 845 10 (2 4)h ac 720 10 (8 620 10 (8, where the solution holding time is determined by the cross-sectional area of the member;

b Cold-rolled sheet and strip, 1115 5 (10 30) min ac (or air-cooled) 845 10 3 h ac 720 10 8h fc (56 h) 620 10 8h ac (or air-cooled).

Inconel783 low coefficient of thermal expansion superalloy.

Inconel 783 alloy is a superalloy that is resistant to oxidation and has a low coefficient of thermal expansion, developed specifically for steam turbine applications. The addition of niobium and aluminum improves the strength of alloy 783 through precipitation hardening heat treatment. In addition, the aluminium content also gives it excellent oxidation resistance at high temperatures.

The density of alloy 783 is about 5% smaller than that of superalloys such as alloy 718.

The combination of low thermal expansion, high strength and excellent oxidation resistance makes Alloy 783 particularly suitable for gas and steam turbine components. Low thermal expansion allows for tighter control of clearances and tolerances, resulting in greater power output and combustion efficiency.

Inconel783 Chemical Composition:

c(％)si(％)

mn(％)cr(％)

Ni( )Mo( )Co( ) Margin w( )

al(％)cu(％)

ti(％)fe(％)

Other ( ) b ,p ,s

Inconel783 similar grades: GH6783, GH783Inconel783 product form: thin plate, round bar, wire, extruded profile.

Inconel783 standard: UNS R30783 SAE AMS 5940 GB

Shanghai Shengtong Metal.

<>GH783 Performance Characteristics:

1) Superalloys have high high-temperature strength.

2) Good oxidation resistance and hot corrosion resistance.

3) Good fatigue properties, fracture toughness, plasticity. GH783 process performance and requirements:

1. The alloy is prone to internal cracking during forging, which allows heavy hammer strikes and low temperature chamfering. The temperature of the ingot furnace is not higher than 700, the final heating temperature is 1150 10, the forging temperature is not less than 1060, and the final forging temperature is not less than 950.

2. The average grain size of the alloy is closely related to the deformation degree of the forging and the final forging temperature.

3. The alloy can be welded with inert gas shielded tungsten arc and flash butt welding in the solid solution state.

Inconel 783 is another superalloy material. It is also a nickel-based alloy with excellent high-temperature performance and corrosion resistance. The following are the main components and performance characteristics of Inconel 783 alloy:

Main components: Nickel (Ni): about 60% of the alloy

Iron (Fe): about 21% of the alloy

Chromium (CR): about 12% of the alloy

Aluminum (Al): about 5% of the alloy

Molybdenum (Mo): about 2% of the alloy

Titanium (Ti): about 1% of the alloy

Performance characteristics: High temperature strength: Inconel 783 alloy has excellent high temperature strength and oxidation resistance, and is able to maintain its structural and mechanical properties in high temperature environments.

Corrosion resistance: The alloy has good resistance to corrosion in oxidation and reduction environments, and is suitable for the application of some corrosive media.

Oxidation resistance: Inconel 783 alloy is able to form a dense oxide layer, providing excellent oxidation resistance and can be used for a long time in high-temperature oxidizing environments.

Thermal fatigue resistance: The alloy has good thermal fatigue resistance and is able to maintain its reliability and life under high temperatures and cyclic stress.

Grade: Inconel 783

Carbon C:

Silicon SI:

Manganese mn:

Chromium Cr: Nickel Ni:

Molybdenum mo: —

Cobalt co: Margin.

Tungsten w: —

Aluminum al: copper cu: 0,50

Titanium ti:

Iron Fe: Other ( ) b , p , s

1. Grade: Inconel 718 precipitation strengthened nickel-based superalloy.

2. Chemical composition: carbon, silicon, chromium: copper, nickel, phosphorus, molybdenum, sulfur, titanium, aluminum, cobalt, niobium+tantalum, manganese, boron

Three: Scope of applicationApplication field: perennial spot inventory round bar, plate, seamless pipe, tape and reel!

The alloy has good comprehensive properties in the temperature range of -253 700, and the yield strength below 650 ranks first among deformed superalloys, and has good fatigue resistance, radiation resistance, oxidation resistance, corrosion resistance, as well as good processing properties and good welding properties. It is capable of manufacturing a wide range of parts with complex shapes, and has been used in a wide range of temperatures in aerospace, nuclear, petroleum and extrusion dies. Due to its high temperature strength, excellent corrosion resistance and easy processing at 700, it can be widely used in various high-demand occasions.

4. Physical properties: density g cm3 ( melting point ( 1260 1320) thermal conductivity (w m ) specific heat capacity j kg (435) elastic modulus gpa(199,9) shear modulus gpa(77,2) resistivity m (-Poisson's ratio( linear expansion coefficient a 10-6 -1 (.

Heat treatment method (solution treatment) Tensile strength B MPa (965) Yield strength (550) Elongation 5 % (30) Brinell hardness HBS ( 363).

5. Overview: Ease of process: high tensile strength, fatigue strength, creep strength and breaking strength at 700, high oxidation resistance at 1000, stable chemical properties at low temperature, good welding performance.

Inconel 718 (or Alloy 718) is a special type of high-strength superalloy whose nickel-chromium base makes it resistant to corrosion, high pressures, and extreme temperatures up to 700°C.

The material is composed of 50-55% nickel strip, 17-21% chromium, niobium and tantalum, as well as trace amounts of molybdenum, titanium, cobalt, aluminum, manganese, copper, silicon and other elements.

Due to its unique properties, Inconel 718 has become useful in a wide range of applications, from manufacturing operations to military equipment and the aerospace industry.

Chemically typical. Nickel + Cobalt:

Chromium: Molybdenum: Niobium.

Tantalum: Titanium: Aluminum:

The maximum manganese cobalt is less than 300 tons.

Phosphorus: Maximum Sulfur: Maximum.

Boron: Max Copper: Max.

Iron: Balanced. Features of the Inconel 718.

Temperature resistance. Inconel 718 has a melting point of 1430°C and shows effective heat and high temperature resistance. It also works well at low temperatures, which indicates the range of temperature resistance that the material has.

Natural heat protection.

This nickel superalloy has an inherent ability to produce a strong and stable oxide layer when heated. This natural passivation protects the material from damage.

Corrosion resistance.

The protective oxide layer gives this Inconel variant significant resistance to oxidation, thus protecting it from corrosion.

High mechanical strength.

At room temperature, the yield strength of the superalloy material is as low as 725 MPa and the tensile strength is 1035 MPa. When Inconel 718 was solution and precipitation treated, these numbers increased to 1035 MPa and 1240 MPa, respectively.

Production and processing. Inconel 718 can be produced by the following processes:

Annealing: The metal is heated and then gradually cooled down. This gives the material strength and resistance to the source of the smirk.

Precipitation hardening: Also known as age hardening or precipitation heat treatment, this method increases the strength of an alloy by introducing impurities before heating.

In annealing, also known as solution strengthening, the metal components are completely dissolved so that they can precipitate properly, giving Inconel 718 the strength of its design.

In precipitation intensification, nickel and niobium combine to form gammadiin (or Ni3 nB). Extreme temperatures above 800°C can cause nickel phase precipitation.

As a result, when machined above 540°C, Inconel 718 can be machined into customized shapes and orientations.

Similar brands to inconel718:

American brand: UNS N07718

British brand: InconelX-750.

Chinese brands: GH4169 and GH169.

Dutch brand: NC15FETNBA.

Japanese brand: NCF750.

Brief introduction of the characteristics and main uses of inconel718;

Inconel 718 alloy is a nickel-based heat-resistant alloy reinforced by a tetragonal sum phase in the center of the body. It has excellent comprehensive properties in the temperature range of -253 to residual grinding 700, and the tensile strength below 650 ranks first among deformed heat-resistant alloys. It also has excellent resistance to fatigue, radiation, oxidation, and corrosion, as well as excellent processability, weldability, and long-term mechanism reliability.

Peculiarity. 1.Yi Shifeng in processing.

2.High compressive strength, fatigue limit, stress relaxation compressive strength and 700 elongation at break.

Strong antioxidant capacity.

4.Stable organic chemistry at ultra-low temperatures.

5.Excellent welding performance.

Main uses: Because it has high temperature compressive strength vertical return bucket under 700, it has excellent corrosion resistance and is easy to process, and can be widely used in various high-specification places. Solid-fuel rockets for turbine generators.

1.Ultra-low temperature project.

2.Acid-alkaline natural environment.

3.Nuclear engineering.

Inconel 718 International Wildcard Ingredients:

Inconel 718 Physical Properties:

Inconel 718 Heat Treatment:

inconel 718

Inconel 718 in action:

High temperature strength, excellent corrosion resistance and machinability up to 700 degrees make it suitable for use in a wide range of demanding environments.

1.Steam turbine.

2.Liquid rockets.

3. Low temperature engineering.

4.Acidic environment.

5. Nuclear engineering.

<> nickel-based alloys. Inconel 718 is essentially a nickel-based alloy, which is a hardened alloy containing niobium and molybdenum precipitation. In the temperature range below 650 degrees Celsius, it has high strength and very good toughness, and will show good corrosion resistance in both high and low temperature environments.

At the same time, there are two forms of its state, one is the state of solution treatment, and the other is the state of precipitation hardening. When the temperature reaches 700 degrees Celsius, it exhibits good tensile strength and breaking strength. In the field of mechanical processing as a whole, it is a material that is difficult to process.