Class: ER330

AWS: A5.9

Conforms to Certification: AWS A5.9                 ASME SFA A5.9

Weld Process Used for Tig (GTAW)

AWS Chemical Composition Requirements
C = 0.18 – 0.25
Cr = 15.0 – 17.0
Ni = 34.0 – 37.0
Mo = 0.75 max
Mn = 1.0 – 2.5
Si = 0.30 – 0.65
P = 0.03 max
S = 0.03 max
Cu = 0.75 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
ER330 is used to weld cast and wrought material of similar chemical composition. The weld metal provides excellent heat and scale resistance up to 1800ºF. However, high sulfur environments may adversely affect elevated temperature performance. This being a fully austenitic alloy, low heat input is necessary.

Deposited Chemical Composition % (Typical)
C = 0.23	Mo = 0.10	P = 0.014
Cr = 15.95	Mn = 1.95	S = 0.005
Ni = 35.20	Si = 0.42	Cu = 0.15

 

Mechanical Properties (R.T.)
Yield Strength	84,000psi
Tensile Strength	56,500psi
Elongation	29%

Deposited All Weld Metal Properties
Data is typical for ER330 weld metal deposited by Tig using 100% Argon as the shielding gas.

Recommended Welding Parameters
GTAW “Tig Process”
Wire Diameter	Amps DCSP	Volts	Shielding Gas
.035	60-90	12-15	Argon 100%
.045	80-110	13-16	Argon 100%
1/16	90-130	14-16	Argon 100%
3/32	120-175	15-20	Argon 100%

Note: Parameters for tig welding are dependent upon plate thickness and welding position.
Other shielding Gases may be used for Tig welding. Shielding gases are chosen taking Quality, Cost, and Operability into consideration.