Chemical composition (weight %) (Maximum values unless range is shown)
O
N
C
H
Fe
A1
V
Ni
Mo
Ru
Residuals
0.13
0.03
0.08
0.0125
0.25
5.5-6.5
3.5-4.5
0.08-0.14
0.4
Grade 23 with Ruthenium for improved corrosion resistance. High crevice corrosion temperature, improved stress corrosion resistance compared to Grade 5.