Superalloys

PYRAD53NW

Spécifications

Common name
INCO 718
EU
NiCr19Fe19Nb5Mo3
USA
N07718
AMS
5596
5597
5662
5663
5664
AIR
NC19FeNb
ISO Symbol
NiCr19Fe19Nb5Mo3
ISO Num
2.4668
WL
2.4668
ASTM grade
N07718
ASTM std
B637 B670

Composition

C
0.04
Ni
Base
Cr
18
Mo
3
Ti
0.9
Al
0.5
Fe
18,5
Nb
5.20

Applications

• Aerospace industry: compressor discs.
• Marine and land-based machines.
• Fasteners or diverse components requiring a particularly high yield strength and which must also be stainless or non magnetic.

Characteristics

Precipitation hardened, nickel-based superalloy with:
• Good resistance to high temperature oxidation.
• Excellent mechanical properties up to temperaratures around 700°C.
• Generally used for parts working within the 600 -700°C range.

Mechanical properties

Heat
treatment
UTS
(N/mm²)
0,2%
YS
(N/mm²)
A
(%)
H + V 1360 1120 18

Key to heat treatment symbols

Solution treated H Annealed R
Thermo-mechanical treatment TM Quenched and tempered T+RV
Sub-zero treatment F Solution treated and aged H+V

See also

MLX17

Stainless steels with structural hardening

PER72

Superalloys

AD730

Superalloys