| Product name：KN-818C2 |
| Classification：A5.5 / E8018-C2 |
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- It is suitable for welding 540N/mm2 grade steel for low temperature resistance.
- It provides high deposition rate, good mechanical properties and X-ray quality welds.
- Weld metal contains 3.5%Ni and good impact properties at -75°C.
- It is ideal for welding in LNG storage tanks or 3.5% Ni steel for low temperature resistance.
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Welding Position
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All Positions
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Welding Instruction
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(1) Clean up the contaminations on the steel.
(2) Dry the electrodes at 350~400°C for 60 minutes before welding.
(3) Keep arc as short as possible. Take the back step method to prevent porosity at arc start and re-start. (Please refer to Appendix A).
(4) High heat input will lower the impact value. Please carefully select the welding current.
(5) The preheat temperature for thick plate is 90~110°C.
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TypicalChemical Composition of Weld Metal (wt %)
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C
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Si
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Mn
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P
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S
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Ni
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0.070
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0.57
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0.90
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0.010
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0.008
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3.41
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TypicalMechanical Properties of Weld Metal (PWHT:600°Cx1Hr)
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Tensile Strength
N/mm2(kgf/mm2)
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Yield Strength
N/mm2(kgf/mm2)
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Elongation
%
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Charpy V-Notch
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°C
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J (kgf -m)
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570(58.1)
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480(48.9)
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32
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0
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—
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-75
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108(11.0)
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Size and SuggestedOperating Range (AC or DC+)
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Diameter (mm) x Length(mm)
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2.6x300
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3.2x350
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4.0x400
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5.0x400
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Amp
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H
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70~100
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100~140
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140~180
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180~230
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V-up/OH
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60~90
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90~130
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120~160
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—
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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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