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Inconel625

Inconel 625 NO6625

Inconel 625 Features and Applications Overview:

The alloy is molybdenum and niobium as the main strengthening element of the solid solution strengthened nickel-based superalloy with excellent corrosion resistance and oxidation performance, from low to 980 have good tensile properties and fatigue properties, and salt-tolerant Fog corrosion in the atmosphere. Therefore, it can be widely used in the manufacture of aeroengine parts, aerospace structural parts and chemical equipment.

Inconel 625 Similar brands:

NS336 GH3625 GH625 (China), NC22DNb (France), W.Nr.2.4856 (Germany)

Inconel 625 Chemical composition:

Alloy
Grade

%

Ni

Cr

Fe

Mo

Nb

Co

C

Mn

Si

S

Cu

Al

Ti

Inconel
625

Min

Margin

20.0

8.0

3.15

Max

23.0

5.0

10.0

4.15

1.0

0.10

0.5

0.5

0.015

0.07

0.4

0.4

Inconel 625 Physical properties:

Density
g/cm3

Melting point

Thermal conductivity
/(W/m•)

Specific heat capacity
J/kg•

Elastic Modulus
GPa

Shear modulus
GPa

Resistivity
̦•m

Poisson's ratio

Linear expansion coefficient
a/10-6-1

8.44

1290

1350

12.1(100)

430

205

79

1.28

0.308

12.3(20~100)

Inconel 625 Mechanical properties: (at 20 to detect the minimum mechanical properties)

Heat treatment methods

tensile strengthb/MPa

Yield Strengthp0.2/MPa

Elongation5/%

Brinell hardness HBS

Solution treatment

830

410

30

290

Inconel 625 aИ˜ʣ

Standard

Bar

Forgings

Plate (with) material

Wire

Pipe

American Society for Testing and Materials

ASTM B446

ASTM B446

ASTM B443

ASTM B444

ASTM B704

ASTM B705

American Aerospace Materials Technical Specification

AMS 5666

AMS 5666

AMS 5599

AMS 5837

AMS 5581

American Society of Mechanical Engineers

ASME SB446

ASME SB446

ASTM SB443

ASME SB444

Inconel 625 metallographic structure

The microstructure of the alloy is austenite matrix and a small amount of TiN, NbC, and M6C phases in the solution state. The precipitated phases are ', , M23C6 and M6C after aging at 650-900 for a long time.

Inconel 625 process performance and requirements:

1, the alloy has good cold and hot forming properties, ingot forging heating temperature 1120 .
2, the average grain size of the alloy and forging deformation degree, the final forging temperature is closely related.
3, the alloy welding performance is good, can be protected under the atmosphere with tungsten or the alloy as a material for argon arc welding, but also can be used for brazing and resistance seam welding.
4, the surface treatment process: remove the oxide surface when the first alkaline base wash, then acid sales, hydrofluoric acid - water pickling.
5, when the alloy cold working when the processing capacity is greater than 15%, after annealing to be annealed.

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