KF-810/KCH-420-SX

Weld metal has chemical composition that conforms AISI 420 martensitic stainless steel.

▎Classification

AWS –
JIS –
EN 14700UP6-GF-50-C
GB –

▎Applications and Features

  • Weld metal has chemical composition that conforms AISI 420 martensitic stainless steel.
  • It provides good slag removal, excellent crack resistance and unlimited deposition thickness.
  • It is suitable for the reclamation of continuous casting rolls, blast furnace domes, print rolls and gudgeon.

▎Welding Instruction

  • Please preheat at 200~250°C when the carbon content of the carbon steel work piece is over 0.8 wt% or the low alloy steel work piece is over 0.35wt%.
  • Preheat and interpass temperatures should be controlled between 200-250°C for massive work pieces and high curvature surface to prevent weld cracking caused by high stress.

▎Applications

It is suitable for the reclamation of continuous casting rolls, blast furnace domes, print rolls and gudgeon.

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

CSiMnCr
0.210.551.2513.2

▎Typical Hardness of Weld Metal

1st layer2nd layer3rd layer4th layer
Hardness(HRC)43.946.847.148.1

▎Size and Suggested Operating Range (DC+)

Size (mm)Voltage (V)Current(A)ESO(mm)
3.230-32400-45025-30

▎Certification