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718 NACE/API       ESPECIFICAÇÕES TÉCNICAS

NACE 718 is a precipitation hardened nickel-chromium alloy. It combines high strength in the aged condition with good corrosion resistance and weldability. NACE 718 indicates material stocked in the heat treated condition and provides high strength while meeting the maximum hardness requirements of the NACE MR0175, MR0103 and ISO 15156-3 specifications for use in oil tools used for sour service.

NACE 718 is annealed between 1875-1925°F and water quenched. Subsequently it is aged in the range of 1425-1475°F for 6-8 hours and air cooled or faster to room temperature.


Chemical Composition, %

 

 

Ni

Cr

Mo

Mn

Cu

Si

C

S

P

Co

Cb+Ta

Pb

Se

B

Mg

Ti

Al

Fe

MIN

50

17

2.8

-

-

-

-

-

-

-

4.87

-

-

-

-

0.8

0.4

-

MAX

55

21

3.3

0.35

0.23

0.35

0.045

0.01

0.01

1.0

5.2

1000
ppm

0.0005
ppm

50
ppm

0.0006
ppm

1.15

0.6

Balance


Specifications

API 6A, API 6A718
EN 2.4668
ISO 15156-3
NACE MR0103, NACE MR0175
UNS N07718
Werkstoff 2.4668


Common Trade Names

Inconel® 718, Nickel Alloy 718, NACE MRO175, MRO175
 


INCONEL® and INCOLOY® are registered trademarks of Special Metals (PCC)


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