| Product name：KH-CR25 |
| Classification：A5.13 |
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- Weld metal is a chromium carbide structure with 25% Cr.
- It provides excellent hardness and abrasion resistance at high temperature due to higher chromium carbide content.
- The weld metal has poor impact toughness and high crack susceptibility.
- It is suitable for repairing canisters, sand-blast machines, crushers, and sieves.
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Welding Instruction |
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(1) Dry the electrodes at 300-350°C for 30-60 minutes before use. (2) Preheat temperature should be ≥ 250°C and PWHT should be 600°C. (3) The surfacing should be limited to 2-3 layers.
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Typical Chemical Composition of Weld Metal (wt. %) |
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C |
Si |
Mn |
Cr |
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3.950 |
1.07 |
2.65 |
25.25 |
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Typical Hardness of Weld Metal |
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Hardness Condition |
Vicker’s hardness （HV） |
Rockwell’s hardness （HRC） |
Shore’s hardness （HS） |
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As-welded |
Interpass temp. ≤100°C |
660 |
58 |
79 |
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Continuous build-up |
630 |
56 |
77 |
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Heat treatment |
Temperature (°C) |
200 |
300 |
400 |
500 |
600 |
700 |
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Vicker’s hardness |
640 |
460 |
400 |
300 |
180 |
100 |
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Size and Suggested Operating Range (AC or DC+) |
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Diameter x Length(mm) |
3.2x350 |
4.0x350 |
5.0x350 |
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Amp |
90~140 |
140~190 |
190~250 |
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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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