Austenitic stainless steels

X18PA

Spécifications

Common name
321
EU
X6CrNiTi18-10
USA
UNS: S32100
AISI: 321
AMS
5645
AIR
Z10CNT18-11
ISO Symbol
X6CrNiTi18-10
X8CrNiTi18-10
ISO Num
1.4541
1.4878
WL
1.4544
BS
S129
ASTM grade
321
321
321
321
F321
ASTM std
A276
A314
A473
A479
A182

Composition

C
< 0.08
Ni
11
Cr
18
Ti
> 5 x C

Applications

• Industries: aerospace, chemical, electrical, marine, nuclear, oil industries.
• Various mechanical parts.

Characteristics

• Titanium stabilised austenitic stainless steel.
• Good resistance to intercrystalline corrosion.
• Good resistance to high temperature oxidation up to 800°C.
• Good weldability.

Mechanical properties

Heat
treatment
UTS
(N/mm²)
0,2%
YS
(N/mm²)
A
(%)
KCU
(J/cm²)
H 600 220 50 190

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

XN26TW

Stainless steels for high temperatures