ER90S-B3

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