PRODUCT INFORMATION
Category:
Chrome Moly Welding Wire
Alloy:
WW90S-B9
Class:
ER90S-B9
Description:
Material contains chromium 8.00 – 9.50% and molybdenum 0.80 – 1.10%. Classification is used for welding base material of similar composition. Requires controlled preheat, interpass and post weld heat treatment.
Chemical Composition
C
0.07-0.13
Mn
1.25 max
Si
0.15-0.30
P
0.01 max
S
0.01 max
N
1.00 max
Cr
8.00-9.50
Mo
0.80-1.10
V
0.15-0.25
Al
0.04 max
Cu
0.20 max
(includes coating)
Other
0.50 max
Note
Columbium 0.02-0.10%, Nitrogen 0.03-0.07% required
