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E9018-B91

AWS A5.5 E9018-B91 | ASME SFA 5.5 E9018-B91
(previously 9018-B9)

9018-B91 is 9% Cr- 1% Mo covered electrodes commonly used in maintenance and fabrication of base metals in the power generation, steam piping and equipment found in elevated operating temperatures. The low hydrogen sodium powder covering has good deposition with smooth arc, low spatter and easy slag removal. Typical base metals such as T-91, P-91, and other similar composition are ideal for this filler metal.

TYPICAL WIRE CHEMISTRY (%)

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AWS SPEC

TYPICAL WELD METAL

C

0.08-0.13

0.010

Mn

1.20

0.87

Si

0.30

0.24

P

0.001

0.0092

S

0.01

0.0078

Ni

0.80

0.38

Cr

8.00-10.50

9.12

Mo

0.85-1.20

0.97

Va

0.15-0.30

0.21

Al

0.04

0.01

Nb

0.02-0.10

0.05

N

0.02-0.07

0.04

Cu

0.25

0.02

Typical weld metal properties

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AWS Spec

Weld Metal

Ultimate tensile strength (psi)

90,000 min

116-117,600

Yield Strength (psi)

77,000 min

82-86,000

Elongation in 2" (%)

17% min

26-31%