This table gives the main information about microplasma welding possibilities of some steels:
| Group of steel | Class | Characteristics of weldability |
| Low-carbon | Ferritic | Good |
| Medium-carbon | Ferrito-perlitic Perliticmartensitic |
Satisfactory |
| Carbon | Martensitic | Satisfactory |
| Manganese | Perlito-ferritic | Good |
| Low-alloy, of average strength |
Troosto-martensito- sorbitic |
Good |
| Low-alloy, of increased strength Heat resistant |
Perlitic, Martensitic Perlitic |
Satisfactory Good |
| Reflectory | Austenitic | Good |
| Corrosion resistant |
Austenitic | Good |
| Scale resistant |
Austenitic | Satisfactory |
| Chrome | Perlitic, martensito- ferritic, martensitic |
Satisfactory |
WE HAVE EXPERIENCE IN WELDING OF THE MAJORITY OF MATERIALS :
CARBON, SPECIAL AND STAILESS STEELS; CHROME – NICKEL – COBALT, COMPOSITE
AND COPPER ALLOYS ; NOBLE METALS, PALLADIUM – SILVER AND PLATINUM ALLOYS (USED IN INDUSTRY AND JEWELRY) ; DISSIMILAR MATERIALS – HIGH ALLOY STEELS + LOW CARBON STEELS, PALLADIUM ALLOYS + NICKEL AND (OR) STAINLESS AND SPECIAL STEELS ;
COMPONENTS WITH DIFFERENT THICKNESSES LIKE FOILS AND FLANGES.
AS WE CAN SEE FROM THE TABLE, BY MICROPLASMA IT IS POSSIBLE TO WELD A LOT OF DIFFERENT STEELS WHICH HAVE SO-CALLED EQUIVALENT CARBON UP TO 0,35 - 0,45% - QUITE OFTEN WITHOUT PRE – HEATING. IT HAPPENS DUE TO THE HIGH-ENERGY CONCENTRATION AND SMALL HEATING ZONE , PROVIDING BY MICROPLASMA ARC –
AS COMPARED WITH USUAL (FREE BURNING) ARC - FOR EXAMPLE ARGON ARC.
BELOW IT IS GIVEN
M I C R O S T R U C T U R E OF S O M E W E L D S (from our practice)
The minimum of metal material thickness was 0,03-0,05 mm.
MICROSTRUCTURE OF SOME WELDS
