Class: ER90S-B3

AWS: A5.28

Conforms to Certification: AWS A5.28               ASME SFA A5.28

Weld Process: Tig (GTAW) Welding Processes

AWS Chemical Composition Requirements
C = 0.07 – 0.12	Mn = 0.40 – 0.70
Si = 0.40 – 0.70	P = 0.025 max
S = 0.025 max	Ni = 0.20 max
Cr = 2.30 – 2.70	Mo = 0.90 – 1.20
Cu = 0.35 max	Other = 0.50 max

Available Sizes
.030 x 36
.035 x 36
.045 x 36
1/16 x 36
3/32 x 36
1/8 x 36
3/16 x 36
5/32 x 36

Application
ER90S-B3 is for welding 2¼ chrome, 1 moly steels, pipe material in the petroleum industry for elevated temperature service. Requires controlled preheat, inter-pass and post weld treatment.

Deposited Chemical Composition % (Typical)
C = 0.10	P = 0.009	Cr = 2.55
Mn = 0.62	S = 0.008	Mo = 1.08
Si = 0.48	Ni = 0.06	Cu = 0.12

 

Deposited All Weld Metal Properties % (AW)
Tensile Strength	94,000 psi
Yield Strength	80,500 psi
Elongation	19%

Deposited Charpy-V-Notch Impact Properties %
At +68ºF               80 ft. lbs.

Available Sizes & Recommended Welding Parameters
Process	Diameter of Wire	Voltage (V)	Amperage (A)	Gas
Tig	.035 inches x 36	10 – 12	50 – 70	100% Argon
	.045 inches x 36	10 – 12	70 – 100	100% Argon
	1/16 inches x 36	12 – 15	100 – 125	100% Argon
	3/32 inches x 36	15 – 20	125 – 175	100% Argon
	1/8 inches x 36	15 – 20	175 – 250	100% Argon