KH-SLA

Type of coating: Lime titania type
KH-SLA is a co-based hardfacing electrode (equivalent to Stellite 6) and provides corrosion and oxidation resistance. It can be applied in service temperature up to 650°C. It possesses low stress abrasion resistance.

▎Classification

AWS A5.13ECoCr-A
JIS Z3251DCoCrA-450-BR
EN 14700E Co2
GB T984EDCoCr-A-03

▎Applications and Features

  • KH-SLA is a co-based hardfacing electrode (equivalent to Stellite 6) and provides corrosion and oxidation resistance. It can be applied in service temperature up to 650°C. It possesses low stress abrasion resistance.
  • It is suitable for high temperature abrasion with corrosive environment, such as high temperature valve seats, hot work tools, cutters, gas flow valves, turbine blades and hot press screws.
  • It is generally applied in steel mill, chemistry, petrifaction and sugar industries.

▎Welding Instruction

  • The dilution rate deteriorates the hardness and corrosion resistance.
  • Dragging a 90-degree angle or a short arc can reduce the dilution of weld metal.
  • Preheat and Int. temperature should be 400~500°C. Use slow cooling after welding to prevent cracks.
  • Dry the electrodes at 200-250°C for 30-60 minutes before use

▎Applications

It is suitable for high temperature abrasion with corrosive environment, such as high temperature valve seats, hot work tools, cutters, gas flow valves, turbine blades and hot press screws.

▎Typical Chemical Composition of Weld Metal (wt.%)

CSi
Mn
CrFeWCo
1.050.931.2030.001.633.78bal.

▎Typical Hardness of Weld Metal

ConditionContinuous
build-up
Interpass temp.
100°C
Preheat 200°C
Continuous
build-up
pical Hardness of Weld Metal
As-welded hardness(HRC))
394238
300400500
High temperature hardness(HRC)403834

▎Size and Suggested Operating Range (DC+)

Diameter x Length(mm) 3.2×3504.0×4005.0×400
Amp90-120120-150140-170

▎Certification