WB36 WB 36 T36 P36 is a bainitic Ni-Cu-Mo steel micro-alloyed with niobium. 

This grade is mainly used in high-pressure, medium-temperature feedwater lines (close to 400 °C). 

 

WB36 WB 36 T36 P36 exhibits excellent high-strength properties up to 450 °C. The reduced weight of the feedwater piping components compared with conventional carbon steel allows improved resistance to thermal fatigue and very good heat transfer.

CHEMICAL COMPOSITION (WEIGHT %)

C (％):     ≤0.17

Si (％):     0.25~0.50

Mn (％):   0.80~1.20

P (％)≤:   0.025

S (％)≤:   0.010

Cr (%):    ≤0.30

Mo (%):   0.25~0.50

Ni (%):     1.00~1.30

V (%):      -

Other  (%): N ≤ 0.020, Cu 0.50~0.80, Nb 0.015~0.045