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Inconel 718

Inconel 718 is a nickel-chromium-molybdenum alloy designed to resist a wide range of severely corrosive environments, pitting and crevice corrosion. This nickel steel alloy also displays exceptionally high yield, tensile, and creep-rupture properties at high temperatures.

Inconel 718 is a nickel-chromium-molybdenum alloy designed to resist a wide range of severely corrosive environments, pitting and crevice corrosion. This nickel steel alloy also displays exceptionally high yield, tensile, and creep-rupture properties at high temperatures.


Chemical Composition:

Grade

%

Fe

Ni

Cr

Mo

Nb

C

Inconel718

Min

Rest

50

17

2.8

4.75


Max

55

21

3.3

5.5

0.08

Mn

Si

S

Cu

Al

Ti

B





0.2

0.65


0.35

0.35

0.015

0.3

0.8

1.15

0.0006


Physical Performance:

Density

8.25 g/cm³



Smelt Point

1260-1320



H*T

T*S

Y*S

El

Hardness

Rm N/mm2

RP0.2N/mm2

A5 %

HB

Solution

965

550

30

≤363



Standard of execution:

Form

ASTM

Rod

B 574

Plate, sheet and strip

B 575

Seamless pipe and tube

B 622

Welded pipe

B 619, B 775

Welded tube

B 626, B 751

Welding fitting

B 366

Forged or rolled pipe flange and forged fitting

B 462

Billet and bar for reforging

B 472

Forging

B 564


In what forms is Inconel 718 Available at Taixin?
Sheet
Plate
Bar
Wire


Characteristics of Inconel 718:
Good mechanical properties – tensile, fatigue and creep-rupture
Yield tensile strength, creep, and rupture strength properties are exceedingly high
Highly resistant to chloride and sulfide stress corrosion cracking
Resistant to aqueous corrosion and chloride ion stress corrosion cracking
High temperature resistant
Age-hardenable with a unique property of slow aging response that permits heating and cooling during annealing without the danger of cracking.
Excellent welding characteristics, resistant to postweld age cracking

Applications of Inconel 718 :
Chemical processing
Aerospace
Liquid fuel rocket motor components
Pollution-control equipment
Nuclear reactors
Cryogenic storage tanks
Valves, fasteners, springs, mandrels, tubing hangers
Well head completion equipment and blow out preventers (BOP’s)
Gas turbine engine parts


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