Superalloys
PER625
Spécifications
Common name
INCO 625
EU
NiCr22Mo9Nb
USA
UNS: N06625
AMS
5599
5666
5666
ISO Symbol
NiCr22Mo9Nb
ISO Num
2.4856
ASTM grade
N06625
ASTM std
B446
Composition
C
< 0.03
Ni
Base
Cr
22
Mo
9
Ti
< 0.40
Al
< 0.40
Fe
< 5.00
Nb+Ta
3.60
Applications
• Aerospace industry.
• Naval construction.
• Offshore.
• Chemical engineering.
• Cryogenics.
Characteristics
Nickel-based superalloy with:
• Very good resistance to oxidation.
• Excellent mechanical properties at high temperatures up to 1100°C.
• Excellent corrosion resistance.
• Good low temperature toughness.
Mechanical properties
| Heat treatment |
UTS (N/mm²) |
0,2% YS (N/mm²) |
A (%) |
KV (J) |
|---|---|---|---|---|
| H (grade 1) | 850 | 450 | 40 | 150 |
| H (grade 2) | 750 | 350 | 65 | 250 |
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 |