625 alloy has excellent corrosion resistance and oxidation resistance, from low temperature to 980℃ has good tensile and fatigue properties, and the stress corrosion in the salt-tolerant atmosphere. Therefore, It can be widely used in the manufacturing of aerospace engine parts, aerospace structural components and chemical equipment and contact with seawater and withstanding high mechanical stress.
Corresponding brand
Chemical component
C：≤0.10，Mn：≤0.50，Si：≤0.50，P：≤0.015，S：≤0.015，Cr：20.0~23.0，Ni：54.0~60.0，Mo：8.0~10.0，Ti：≤0.40，Al：≤0.40，Fe：≤5.0，Nb：3.15~4.15
physical performance
Minimum mechanical properties of alloys at room temperature.
character
A. All kinds of corrosion media of oxidation and reduction environment have excellent corrosion resistance.
B. Excellent resistance to corrosion and crevice corrosion, and no stress corrosion cracking due to chloride.
C. Excellent corrosion resistance of inorganic acids, such as nitric acid, phosphoric acid, sulfuric acid, hydrochloric acid, acid and hydrochloric acid, etc.
D. Excellent corrosion resistance of various inorganic acid mixtures.
E. temperature 40 ℃, in various concentrations of hydrochloric acid solution can show very good corrosion resistance
F. Good processing and weldability, no cracking sensitivity after welding.
G. with wall temperature in 196 ~ 450 ℃ in the pressure vessel manufacturing certification
H. The best standard grade VII for the use of acid gas environment by the NACE standard certification (MR-01-75) of the American association of corrosion engineers.
metallic structure
625 is the surface centred cubic lattice structure. When at about 650 ℃ heat preservation after long enough, the precipitation of carbon particles and unstable quaternary phase and will be converted to stable Ni3 (Nb, Ti) orthorhombic lattice phase. Molybdenum and niobium in the nickel chromium matrix will improve the mechanical properties of the material, but the plasticity will decrease.
corrosion resistance
625 alloys exhibit excellent corrosion resistance in many media. It has excellent resistance to pitting, crevice corrosion, intergranular corrosion and erosion in chloride media. It has good resistance to inorganic acids, such as nitric acid, phosphoric acid, sulfuric acid, hydrochloric acid, etc., and also has the properties of alkali and organic acid corrosion in oxidizing and reducing environment. Effective anti-chloride ion reducing stress corrosion cracking. There is little corrosion in the seawater and industrial gas environment, and the seawater and salt solutions have high corrosion resistance, as well as at high temperatures. No sensitivity during welding. In a static or cyclic environment, they are resistant to carbonation and oxidation, and are resistant to chlorine gas corrosion.
Process performance and requirements.
hot working
A. hot working temperature range of 1150 ℃ ~ 900 ℃, the cooling way of water quenching or other fast way.
B. To obtain the best performance and corrosion resistance, annealing shall be carried out after hot processing.
C. when heated, material can be directly sent to has been heating up the best work in the temperature of the furnace, heat preservation after enough time (every 100 mm thickness need 60 minutes holding time) quickly, within the prescribed scope of temperature of high temperature hot working period. When the material temperature drops below the heat processing temperature, it needs to be reheated.
cold working
A. Cold working materials should be annealed, and the working hardening rate is larger than austenitic chromium nickel stainless steel.
B. In cold machining, intermediate annealing is required.
C. When the processing quantity is greater than 15%, annealing shall be carried out after hot processing.
Welding process
A. Suitable for any conventional welding process.
C. The material to be welded shall be solid solution treatment, removing the oxidized skin, oil and other marks.
D. no heat treatment is required before and after welding.
application fields
The low carbon alloy 625 after softening annealing is widely used in the chemical process industry, with good corrosion resistance and high strength as the thinner structural parts. 625 alloys can be used in situations where the seawater is exposed to seawater and is subjected to high mechanical stress.
A. Organic chemical process components containing chlorides, especially where acid chloride catalysts are used.
B. The digester and bleaching pool used to make pulp and paper industry.
C. Absorption tower, reheater, flue gas inlet baffle, fan (humidity), agitator, guide plate and flue gas in flue gas desulfurization system.
D. Equipment and components used in the manufacture of acid gas environments.
E. acetic acid and acetic anhydride reaction generator.
F. Sulphuric acid condenser.625 alloy has excellent corrosion resistance and oxidation resistance, from low temperature to 980℃ has good tensile and fatigue properties, and the stress corrosion in the salt-tolerant atmosphere. Therefore, It can be widely used in the manufacturing of aerospace engine parts, aerospace structural components and chemical equipment and contact with seawater and withstanding high mechanical stress.
Corresponding brand
Chemical component
C：≤0.10，Mn：≤0.50，Si：≤0.50，P：≤0.015，S：≤0.015，Cr：20.0~23.0，Ni：54.0~60.0，Mo：8.0~10.0，Ti：≤0.40，Al：≤0.40，Fe：≤5.0，Nb：3.15~4.15
physical performance
Minimum mechanical properties of alloys at room temperature.
character
A. All kinds of corrosion media of oxidation and reduction environment have excellent corrosion resistance.
B. Excellent resistance to corrosion and crevice corrosion, and no stress corrosion cracking due to chloride.
C. Excellent corrosion resistance of inorganic acids, such as nitric acid, phosphoric acid, sulfuric acid, hydrochloric acid, acid and hydrochloric acid, etc.
D. Excellent corrosion resistance of various inorganic acid mixtures.
E. temperature 40 ℃, in various concentrations of hydrochloric acid solution can show very good corrosion resistance
F. Good processing and weldability, no cracking sensitivity after welding.
G. with wall temperature in 196 ~ 450 ℃ in the pressure vessel manufacturing certification
H. The best standard grade VII for the use of acid gas environment by the NACE standard certification (MR-01-75) of the American association of corrosion engineers.
metallic structure
625 is the surface centred cubic lattice structure. When at about 650 ℃ heat preservation after long enough, the precipitation of carbon particles and unstable quaternary phase and will be converted to stable Ni3 (Nb, Ti) orthorhombic lattice phase. Molybdenum and niobium in the nickel chromium matrix will improve the mechanical properties of the material, but the plasticity will decrease.
corrosion resistance
625 alloys exhibit excellent corrosion resistance in many media. It has excellent resistance to pitting, crevice corrosion, intergranular corrosion and erosion in chloride media. It has good resistance to inorganic acids, such as nitric acid, phosphoric acid, sulfuric acid, hydrochloric acid, etc., and also has the properties of alkali and organic acid corrosion in oxidizing and reducing environment. Effective anti-chloride ion reducing stress corrosion cracking. There is little corrosion in the seawater and industrial gas environment, and the seawater and salt solutions have high corrosion resistance, as well as at high temperatures. No sensitivity during welding. In a static or cyclic environment, they are resistant to carbonation and oxidation, and are resistant to chlorine gas corrosion.
Process performance and requirements.
hot working
A. hot working temperature range of 1150 ℃ ~ 900 ℃, the cooling way of water quenching or other fast way.
B. To obtain the best performance and corrosion resistance, annealing shall be carried out after hot processing.
C. when heated, material can be directly sent to has been heating up the best work in the temperature of the furnace, heat preservation after enough time (every 100 mm thickness need 60 minutes holding time) quickly, within the prescribed scope of temperature of high temperature hot working period. When the material temperature drops below the heat processing temperature, it needs to be reheated.
cold working
A. Cold working materials should be annealed, and the working hardening rate is larger than austenitic chromium nickel stainless steel.
B. In cold machining, intermediate annealing is required.
C. When the processing quantity is greater than 15%, annealing shall be carried out after hot processing.
Welding process
A. Suitable for any conventional welding process.
C. The material to be welded shall be solid solution treatment, removing the oxidized skin, oil and other marks.
D. no heat treatment is required before and after welding.
application fields
The low carbon alloy 625 after softening annealing is widely used in the chemical process industry, with good corrosion resistance and high strength as the thinner structural parts. 625 alloys can be used in situations where the seawater is exposed to seawater and is subjected to high mechanical stress.
A. Organic chemical process components containing chlorides, especially where acid chloride catalysts are used.
B. The digester and bleaching pool used to make pulp and paper industry.
C. Absorption tower, reheater, flue gas inlet baffle, fan (humidity), agitator, guide plate and flue gas in flue gas desulfurization system.
D. Equipment and components used in the manufacture of acid gas environments.
E. acetic acid and acetic anhydride reaction generator.
F. Sulphuric acid condenser.
Corresponding brand
| China GB |
US UNS |
Germany SEW VDIUV |
UK BS |
France AFNOR |
|
| Inconel 625 | NS3306 | N06625 | W.Nr.2.4856 NiCr22 Mo9Nb | NA21 | NC 22 DNb |
Chemical component
C：≤0.10，Mn：≤0.50，Si：≤0.50，P：≤0.015，S：≤0.015，Cr：20.0~23.0，Ni：54.0~60.0，Mo：8.0~10.0，Ti：≤0.40，Al：≤0.40，Fe：≤5.0，Nb：3.15~4.15
physical performance
| density | 8.4g/cm3 |
| melting point | 1290-1350℃ |
Minimum mechanical properties of alloys at room temperature.
| Alloy and state | strength of extension Rm N/mm2 |
yield strength RP0.2N/mm2 |
ductility A5 % |
BH(Brinell Hardness) HB |
| 625 | 760 | 345 | 30 | ≤220 |
character
A. All kinds of corrosion media of oxidation and reduction environment have excellent corrosion resistance.
B. Excellent resistance to corrosion and crevice corrosion, and no stress corrosion cracking due to chloride.
C. Excellent corrosion resistance of inorganic acids, such as nitric acid, phosphoric acid, sulfuric acid, hydrochloric acid, acid and hydrochloric acid, etc.
D. Excellent corrosion resistance of various inorganic acid mixtures.
E. temperature 40 ℃, in various concentrations of hydrochloric acid solution can show very good corrosion resistance
F. Good processing and weldability, no cracking sensitivity after welding.
G. with wall temperature in 196 ~ 450 ℃ in the pressure vessel manufacturing certification
H. The best standard grade VII for the use of acid gas environment by the NACE standard certification (MR-01-75) of the American association of corrosion engineers.
metallic structure
625 is the surface centred cubic lattice structure. When at about 650 ℃ heat preservation after long enough, the precipitation of carbon particles and unstable quaternary phase and will be converted to stable Ni3 (Nb, Ti) orthorhombic lattice phase. Molybdenum and niobium in the nickel chromium matrix will improve the mechanical properties of the material, but the plasticity will decrease.
corrosion resistance
625 alloys exhibit excellent corrosion resistance in many media. It has excellent resistance to pitting, crevice corrosion, intergranular corrosion and erosion in chloride media. It has good resistance to inorganic acids, such as nitric acid, phosphoric acid, sulfuric acid, hydrochloric acid, etc., and also has the properties of alkali and organic acid corrosion in oxidizing and reducing environment. Effective anti-chloride ion reducing stress corrosion cracking. There is little corrosion in the seawater and industrial gas environment, and the seawater and salt solutions have high corrosion resistance, as well as at high temperatures. No sensitivity during welding. In a static or cyclic environment, they are resistant to carbonation and oxidation, and are resistant to chlorine gas corrosion.
Process performance and requirements.
hot working
A. hot working temperature range of 1150 ℃ ~ 900 ℃, the cooling way of water quenching or other fast way.
B. To obtain the best performance and corrosion resistance, annealing shall be carried out after hot processing.
C. when heated, material can be directly sent to has been heating up the best work in the temperature of the furnace, heat preservation after enough time (every 100 mm thickness need 60 minutes holding time) quickly, within the prescribed scope of temperature of high temperature hot working period. When the material temperature drops below the heat processing temperature, it needs to be reheated.
cold working
A. Cold working materials should be annealed, and the working hardening rate is larger than austenitic chromium nickel stainless steel.
B. In cold machining, intermediate annealing is required.
C. When the processing quantity is greater than 15%, annealing shall be carried out after hot processing.
Welding process
A. Suitable for any conventional welding process.
C. The material to be welded shall be solid solution treatment, removing the oxidized skin, oil and other marks.
D. no heat treatment is required before and after welding.
application fields
The low carbon alloy 625 after softening annealing is widely used in the chemical process industry, with good corrosion resistance and high strength as the thinner structural parts. 625 alloys can be used in situations where the seawater is exposed to seawater and is subjected to high mechanical stress.
A. Organic chemical process components containing chlorides, especially where acid chloride catalysts are used.
B. The digester and bleaching pool used to make pulp and paper industry.
C. Absorption tower, reheater, flue gas inlet baffle, fan (humidity), agitator, guide plate and flue gas in flue gas desulfurization system.
D. Equipment and components used in the manufacture of acid gas environments.
E. acetic acid and acetic anhydride reaction generator.
F. Sulphuric acid condenser.625 alloy has excellent corrosion resistance and oxidation resistance, from low temperature to 980℃ has good tensile and fatigue properties, and the stress corrosion in the salt-tolerant atmosphere. Therefore, It can be widely used in the manufacturing of aerospace engine parts, aerospace structural components and chemical equipment and contact with seawater and withstanding high mechanical stress.
Corresponding brand
| China GB |
US UNS |
Germany SEW VDIUV |
UK BS |
France AFNOR |
|
| Inconel 625 | NS3306 | N06625 | W.Nr.2.4856 NiCr22 Mo9Nb | NA21 | NC 22 DNb |
Chemical component
C：≤0.10，Mn：≤0.50，Si：≤0.50，P：≤0.015，S：≤0.015，Cr：20.0~23.0，Ni：54.0~60.0，Mo：8.0~10.0，Ti：≤0.40，Al：≤0.40，Fe：≤5.0，Nb：3.15~4.15
physical performance
| density | 8.4g/cm3 |
| melting point | 1290-1350℃ |
Minimum mechanical properties of alloys at room temperature.
| Alloy and state | strength of extension Rm N/mm2 |
yield strength RP0.2N/mm2 |
ductility A5 % |
BH(Brinell Hardness) HB |
| 625 | 760 | 345 | 30 | ≤220 |
character
A. All kinds of corrosion media of oxidation and reduction environment have excellent corrosion resistance.
B. Excellent resistance to corrosion and crevice corrosion, and no stress corrosion cracking due to chloride.
C. Excellent corrosion resistance of inorganic acids, such as nitric acid, phosphoric acid, sulfuric acid, hydrochloric acid, acid and hydrochloric acid, etc.
D. Excellent corrosion resistance of various inorganic acid mixtures.
E. temperature 40 ℃, in various concentrations of hydrochloric acid solution can show very good corrosion resistance
F. Good processing and weldability, no cracking sensitivity after welding.
G. with wall temperature in 196 ~ 450 ℃ in the pressure vessel manufacturing certification
H. The best standard grade VII for the use of acid gas environment by the NACE standard certification (MR-01-75) of the American association of corrosion engineers.
metallic structure
625 is the surface centred cubic lattice structure. When at about 650 ℃ heat preservation after long enough, the precipitation of carbon particles and unstable quaternary phase and will be converted to stable Ni3 (Nb, Ti) orthorhombic lattice phase. Molybdenum and niobium in the nickel chromium matrix will improve the mechanical properties of the material, but the plasticity will decrease.
corrosion resistance
625 alloys exhibit excellent corrosion resistance in many media. It has excellent resistance to pitting, crevice corrosion, intergranular corrosion and erosion in chloride media. It has good resistance to inorganic acids, such as nitric acid, phosphoric acid, sulfuric acid, hydrochloric acid, etc., and also has the properties of alkali and organic acid corrosion in oxidizing and reducing environment. Effective anti-chloride ion reducing stress corrosion cracking. There is little corrosion in the seawater and industrial gas environment, and the seawater and salt solutions have high corrosion resistance, as well as at high temperatures. No sensitivity during welding. In a static or cyclic environment, they are resistant to carbonation and oxidation, and are resistant to chlorine gas corrosion.
Process performance and requirements.
hot working
A. hot working temperature range of 1150 ℃ ~ 900 ℃, the cooling way of water quenching or other fast way.
B. To obtain the best performance and corrosion resistance, annealing shall be carried out after hot processing.
C. when heated, material can be directly sent to has been heating up the best work in the temperature of the furnace, heat preservation after enough time (every 100 mm thickness need 60 minutes holding time) quickly, within the prescribed scope of temperature of high temperature hot working period. When the material temperature drops below the heat processing temperature, it needs to be reheated.
cold working
A. Cold working materials should be annealed, and the working hardening rate is larger than austenitic chromium nickel stainless steel.
B. In cold machining, intermediate annealing is required.
C. When the processing quantity is greater than 15%, annealing shall be carried out after hot processing.
Welding process
A. Suitable for any conventional welding process.
C. The material to be welded shall be solid solution treatment, removing the oxidized skin, oil and other marks.
D. no heat treatment is required before and after welding.
application fields
The low carbon alloy 625 after softening annealing is widely used in the chemical process industry, with good corrosion resistance and high strength as the thinner structural parts. 625 alloys can be used in situations where the seawater is exposed to seawater and is subjected to high mechanical stress.
A. Organic chemical process components containing chlorides, especially where acid chloride catalysts are used.
B. The digester and bleaching pool used to make pulp and paper industry.
C. Absorption tower, reheater, flue gas inlet baffle, fan (humidity), agitator, guide plate and flue gas in flue gas desulfurization system.
D. Equipment and components used in the manufacture of acid gas environments.
E. acetic acid and acetic anhydride reaction generator.
F. Sulphuric acid condenser.
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