MMA electrode and current calculator
July 22, 2026 at 12:45 pm
Select the material or application, electrode group, thickness, welding position and diameter. The calculator will suggest an approximate starting current and practical recommendations.
Enter the parameters
For hardfacing, enter the approximate base-part thickness.
The results are approximate starting settings. Always follow the technical data sheet of the specific electrode and perform a test weld.
Recommended starting parameters
Preparing calculation…
Material / application:
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Electrode type:
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Electrode diameter:
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Current range:
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Recommended start:
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Polarity:
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Recommended machine output:
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Intended application:
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Practical recommendations
- Recommendations will appear after calculation.
Included electrode groups
| Material / application | Electrode groups | Main application |
|---|---|---|
| Carbon steel | E6013, E7018 | Repairs, structures and demanding joints |
| Stainless steel | E308L-16, E316L-16, E309L-16 | 304/304L, 316/316L, stainless steel to carbon steel |
| Aluminium | E4043 tipa elektrods | General aluminium repair work |
| Cast iron | ENi-CI, ENiFe-CI | Cast iron repair, cracks and joining to steel |
| Hardfacing | ~350 HB, ~45 HRC, ~60 HRC grupas | Build-up, metal-to-metal and abrasive wear |
Frequently asked questions
Why does the calculator show a range instead of one exact current?
Welding current is affected by the electrode manufacturer, joint type, welding position, arc length, base-material preparation and the welding machine itself. Therefore, the calculator provides a practical starting range and one recommended starting value.
Can E309L-16 be used to join stainless steel to carbon steel?
This is generally one of the typical applications of the E309L group, but the exact joint and service requirements must still be evaluated separately.
Why should cast iron repairs be welded in short runs?
Short weld runs help limit heat input and reduce the risk of cracking. Gradual cooling and correct part preparation are also important.
Is a hardfacing electrode selected according to part thickness?
It is selected mainly according to wear type, required hardness, impact load and base material. Thickness mainly affects electrode diameter and welding current.