Inconel718 alloy is a precipitation-hardening nickel-chromium-iron alloy containing niobium and molybdenum. It has high strength, good toughness and corrosion resistance in high and low temperature environment under 650℃. Its state can be solid solution treatment or precipitation hardening state.
Chemical composition
| Alloy |
% |
Ni |
Cr |
Fe |
C |
Mn |
Si |
Cu |
Al |
P |
S |
| 718 |
Min. |
58 |
21 |
|
|
|
|
|
1.0 |
|
|
| Max. |
63 |
25 |
balance |
0.1 |
1.5 |
0.5 |
1 |
1.7 |
0.02 |
0.015 |
Physical properties
| Density |
Melting point
|
Magnetic |
| 8.24g/cm³ |
1260~1320℃ |
None |
Inconel 718 alloy minimum mechanical properties in the room temperature
| Status |
Tensile strength Rm N/mm² |
Yield strength
Rp
0. 2N/mm²
|
Elongation
As % |
Brinell hardness
HB
|
| Solution treatment |
965 |
550 |
30 |
≤363 |
It has the following features
● ease of processing
● high tensile strength, fatigue strength, creep strength and fracture strength at 700℃
● high oxidation resistance at 1000℃
● stable chemical properties at low temperature
● good welding performance
Application field
Due to its high temperature strength, excellent corrosion resistance and easy processing at 700℃, it can be widely used in various occasions with high requirements. ● liquid fuel rocket
● cryogenic engineering
● acidic environment
Second-ranking nuclear engineering
Inconel 718 products standards
| Sheet/Plate |
Round bar/Wire |
Pipe |
Tube |
|
ASME SB-670
ASME SB-906
AMS 5596
AMS 5597
AMS 5950
AMS 5914
|
ASME SB-637
AMS 5662
AMS 5663
AMS 5664
AMS 5832
AMS 5914
AMS 5962
|
AMS 5589
AMS 5590
|
AMS 5589
AMS 5590
|