Class: ER90S-B3

AWS: A5.28

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

Weld Process: Mig (GMAW) 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

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
MIG – Sprayer Transfer	.035 inches	28 – 32	165 – 200	98% Argon + 2% Helium
	.045 inches	30 – 34	180 – 220	75% Argon + 25% CO2
	1/16 inches	30 – 34	230 – 260	100% CO2
MIG – Short Arc Transfer	.035 inches	22 – 25	100 – 140	100% CO2
	.045 inches	23 – 26	120 – 150	75% Argon + 25% CO2