SK A43-O high alloyed steels
Classifications open arc metal cored wire
DIN 8555
MF 10-GF-65-G
Characteristics
CrNb alloy designed to resist high stress grinding abrasion at service temperature not
exceeding 450 °C. The deposit will readily show stress relief cracks.
Microstructure: Austenitic matrix with primary & eutectic carbides
and nodular Nb carbides
Machinability: Grinding only
Oxy-acetylene cutting: Cannot be flame cut
Deposit thickness: 10 to 12 mm in 2 to 3 layers
Field of use
Shovel, excavator, dredge and dragline bucket lips and teeth, hammers, rippers, crushing
equipment, wear plates, expeller screws, giratory crushers, etc.
Typical analysis in %
C Mn Si Cr Nb Fe
5,6 0,2 1,3 20,2 6,7 balance
Typical mechanical properties
Hardness as welded: 64 HRC
Form of delivery and recommended welding parameters
Wire diameter (mm) Amperage Voltage Stick-Out
1,6 180 – 200 26 – 30 35 – 40
2,0 200 – 250 26 – 30 35 – 40
2,4 250 – 300 26 – 30 35 – 40
2,8 300 – 350 26 – 30 35 – 40
