ER430
Class: ER430
AWS: A5.9
Conforms to Certification: AWS A5.9 | ASME SFA A5.9
Weld Process Used for Mig: (GMAW) and Submerged Arc (SAW)
AWS Chemical Composition Requirements
C = 0.10 max
Cr = 15.5 – 17.0
Ni = 0.60 max
Mo = 0.75 max
Mn = 0.60 max
Si = 0.50 max
P = 0.03 max
S = 0.03 max
Cu = 0.75 max
Available Sizes |
|
Diameter X Spool Sizes | Diameter X Coil Sizes |
.025 x 2#, 10#, 25# | 1/16 x 60# & mill coil |
.030 x 2#, 10#, 25#, 30#, 33# | 5/64 x 60# & mill coil |
.035 x 2#, 10#, 25#, 30#, 33# | 3/32 x 60# & mill coil |
2#, 10#, 25#, 30#, 33# | 1/8 x 60# & mill coil |
1/16 x 10#, 25#, 30#, 33# | 3/16 x 60# & mill coil |
5/32 x 60# & mill coil |
Application
ER430 is a ferritic stainless steel which offers good ductility in heat treated condition. In addition to the applications of welding similar alloys, it is also used for overlays and thermal spraying.
Deposited Chemical Composition % (Typical) | ||
C = 0.07 | Mo = 0.10 | P = 0.014 |
Cr = 16.5 | Mn = 0.44 | S = 0.01 |
Ni = 0.25 | Si = 0.36 |
Mechanical Properties (R.T.) | |
Yield Strength | 59,000psi |
Tensile Strength | 77,500psi |
Elongation | 25% |
Deposited All Weld Metal Properties
Data is typical for ER430 weld metal deposited by Mig using Argon + 2% oxygen as the shielding gas. Data on sub-arc is not presented, as sub-arc is dependent on the type of flux
Recommended Welding Parameters |
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GMAW “Mig Process” | Reversed Polarity | |||||
Wire Diameter | Wire Feed | Amps | Volts | Shielding Gas | Gas CFH | |
Short Arc Welding | .030 | 13-26 | 40-120 | 16-20 | Argon+2% O2 | 25 |
.035 | 13-26 | 60-140 | 16-22 | Argon+2% O2 | 25 | |
Spray Arc Welding | .035 | 20-39 | 140-220 | 24-29 | Argon+2% O2 | 38 |
.045 | 16-30 | 160-260 | 25-30 | Argon+2% O2 | 38 | |
1/16 | 10-16 | 230-350 | 27-31 | Argon+2% O2 | 38 |
Other shielding Gases may be used for Mig welding. Shielding gases are chosen taking Quality, Cost, and Operability into consideration
Recommended Welding Parameters |
||
SAW “Submerged Arc Welding Process” | Reversed Polarity Suggested | |
Wire Diameter | Amps | Volts |
3/32 | 250-450 | 28-32 |
1/8 | 300-500 | 29-34 |
5/32 | 400-600 | 30-35 |
3/16 | 500-700 | 30-35 |
Both Agglomerated and fused fluxes can be used for submerged arc welding.
Note: The chemical composition of the flux mainly affects the chemistry of the weld metal and consequently its corrosion resistance and Mechanical properties.