Stainless steels for high temperatures
XN26TW
Spécifications
Common name
A286
EU
X6NiCrTiMoVB25-
15-2
15-2
USA
UNS: S66286
AMS
5731
5732
5734
5737
5853
5732
5734
5737
5853
AIR
E-Z6NCT25
ISO Symbol
X6NiCrTiMoVB25-
15-2
15-2
ISO Num
1.4980
WL
1.4944
BS
HR51
HR650
HR650
ASTM grade
660
ASTM std
A453
Composition
C
0.05
Ni
26
Cr
15
Mo
1.25
V
0.25
Ti
2
Applications
• Gas and steam turbine discs and blades.
• Fasteners for high temperature environments.
• Parts working under high stresses at temperature.
• For manufacture of welded parts, use our XN26AW grade.
Characteristics
• Consumable electrode remelted austenitic stainless steel.
• Excellent resistance to high temperature oxidation up to 900/950°C.
• Good mechanical properties up to 650/700°C.
Mechanical properties
| Heat treatment |
UTS (N/mm²) |
0,2% YS (N/mm²) |
A (%) |
KCU (J/cm²) |
|---|---|---|---|---|
| H + V 720°C | 1000 | 650 | 25 | 80 |
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 |