Stainless steels for high temperatures

XN26TW

Spécifications

Common name
A286
EU
X6NiCrTiMoVB25-
15-2
USA
UNS: S66286
AMS
5731
5732
5734
5737
5853
AIR
E-Z6NCT25
ISO Symbol
X6NiCrTiMoVB25-
15-2
ISO Num
1.4980
WL
1.4944
BS
HR51
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

See also

XN26AW

Stainless steels for high temperatures

56T5

Martensitic stainless steels

PYRAD53NW

Superalloys