Cobalt alloys
XSH
Spécifications
Common name
HS25
L605
L605
EU
CoCr20W15Ni
USA
UNS: R30605
AMS
5537
5759
5759
AIR
KC20WN
WL
2.4964
BS
HR40
HR240
HR240
ASTM std
F90
Composition
C
< 0.10
Ni
10
Cr
20
Mn
1.2
Co
Base
W
15
Fe
< 3.00
Applications
• Aerospace and land-turbine industry:
– gas turbine parts exposed to high temperatures: blades, combustion chambers, nozzles …
• Medical: Implants
Characteristics
Cobalt base superalloy with:
• Excellent corrosion resistance.
• In an electrolytic environment, the passive layer limits the galvanic effect to a very low level.
Mechanical properties
| Heat treatment |
UTS (N/mm²) |
0,2% YS (N/mm²) |
A (%) |
|---|---|---|---|
| H | 1005 | 460 | 45 |
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 |