INCONEL® alloy 625

INCONEL® alloy 625 is a corrosion resistant nickel-chromium-molybdenum alloy. It is doped with niobium, which interacts with the molybdenum to provide high strength without additional heat treatment.

 

Chemical composition

Composition

ASTM B446
UNS N06625
%

Nickel 58.00 min
Molybdenum 8.00 - 10.00
Sulfur 0.015 max
Silicon 0.50 max
Chromium 20.00 - 23.00
Niobium + Tantalum 3.15 - 4.15
Titanium 0.40 max
Aluminum 0.40 max
Iron 5.0 max
Manganese 0.50 max
Carbon 0.10 max
Phosphorus 0.015 max

 

Physical properties

  Metric English
Density 8.44 g/cm³ 0.305 lbs/in³
Modulus of elasticity 207 MPa 30.1 Mpsi
Electrical resistivity 1.29 µohm*m 50.8 µohm*in
Thermal conductivity 9.8 W/(m*°C) 68 BTU*in/(hr*ft²*°F)
Coefficient of thermal expansion 12.8 µm/(m*°C) 7.1 µin/(in*°F)

*Values calculated at 22 °C [72 °F]

 

Mechanical properties

Cold worked
%

Yield strength

Ultimate tensile strength

Elongation
%

0 820 MPa [119 ksi] 1165 MPa [169 ksi] 36
20 1200 MPa [174 ksi] 1496 MPa [217 ksi] 6.1
37 1407 MPa [204 ksi] 1751 MPa [254 ksi] 3.3

50

1600 MPa [232 ksi] 1889 MPa [274 ksi] 3.2

60

1737 MPa [252 ksi] 1993 MPa [298 ksi] 2.1

68

1820 MPa [264 ksi] 2055 MPa [298 ksi] 2.1

75

1924 MPa [279 ksi] 2144 MPa [311 ksi] 2.3

* Values are typical and may not represent all diameters. Test method will affect results.
All data represent results from a 25.4 cm [10 in] test gauge length.

 

INCONEL® alloy 625

INCONEL® alloy 625 is a corrosion resistant nickel-chromium-molybdenum alloy. It is doped with niobium, which interacts with the molybdenum to provide high strength without additional heat treatment.

 

Chemical composition

Composition

ASTM B446
UNS N06625
%

Nickel 58.00 min
Molybdenum 8.00 - 10.00
Sulfur 0.015 max
Silicon 0.50 max
Chromium 20.00 - 23.00
Niobium + Tantalum 3.15 - 4.15
Titanium 0.40 max
Aluminum 0.40 max
Iron 5.0 max
Manganese 0.50 max
Carbon 0.10 max
Phosphorus 0.015 max

 

Physical properties

  Metric English
Density 8.44 g/cm³ 0.305 lbs/in³
Modulus of elasticity 207 MPa 30.1 Mpsi
Electrical resistivity 1.29 µohm*m 50.8 µohm*in
Thermal conductivity 9.8 W/(m*°C) 68 BTU*in/(hr*ft²*°F)
Coefficient of thermal expansion 12.8 µm/(m*°C) 7.1 µin/(in*°F)

*Values calculated at 22 °C [72 °F]

 

Mechanical properties

Cold worked
%

Yield strength

Ultimate tensile strength

Elongation
%

0 820 MPa [119 ksi] 1165 MPa [169 ksi] 36
20 1200 MPa [174 ksi] 1496 MPa [217 ksi] 6.1
37 1407 MPa [204 ksi] 1751 MPa [254 ksi] 3.3

50

1600 MPa [232 ksi] 1889 MPa [274 ksi] 3.2

60

1737 MPa [252 ksi] 1993 MPa [298 ksi] 2.1

68

1820 MPa [264 ksi] 2055 MPa [298 ksi] 2.1

75

1924 MPa [279 ksi] 2144 MPa [311 ksi] 2.3

* Values are typical and may not represent all diameters. Test method will affect results.
All data represent results from a 25.4 cm [10 in] test gauge length.