| Product name：KF-810/KW-420 |
| Classification：- |
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- KW-420 is a submerged arc solid wire that matches with KF-810 neutral flux to produce the weld metal of AISI 420 martensitic stainless steel.
- It offers good slag removal and excellent crack resistance.
- It is suitable for the reclamation of continuous casting rolls, blast furnace dome, print rolls and gudgeons.
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Welding Instruction |
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( 1 ) 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%. ( 2 ) The preheat and interpass temperatures should be controlled between 200-250°C for massive work pieces and high curvature surfaces to prevent weld cracking caused by high stress. |
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Typical Chemical Composition of Weld Metal (wt %) |
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C |
Si |
Mn |
Cr |
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0.150 |
0.33 |
1.20 |
13.10 |
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Typical Hardness of Weld Metal |
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1st layer |
2nd layer |
3rd layer |
4th layer |
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Hardness（HRC） |
43 |
46 |
47 |
48 |
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Size and Suggested Operating Range (DC+) |
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Size (mm) |
Voltage （V） |
Current（A） |
ESO （mm） |
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3.2 |
28~32 |
350~450 |
25~30 |
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No.8, Luke 3rd Rd., Luzhu Dist., Kaohsiung City 821, Taiwan (R.O.C.) TEL:886-7-6955155 FAX:886-7-6955166
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