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Product name：KN-818C3
 
Classification：A5.5 / E8018-C3 / E5518-C3
 
 

  1. KN-818C3 is suitable for welding 540N/mm2 grade steel for low temperature resistance.
  2. It provides high deposition rate, good mechanical properties and X-ray quality welds.
  3. Weld metal contains 1.0%Ni-0.20%Mo and good impact properties at -40°C.
  4. It is ideal for welding in ASTM A226 (A, B), A235 (F, G), A236(C, E, F) and A302 steel.
 

Welding Position

All Positions

Welding Instruction

(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 90~120°C. 

Typical Chemical Composition of Weld Metal (wt %)

C

Si

Mn

P

S

Ni

 

0.070

0.62

0.90

0.013

0.012

1.02

 

Typical Mechanical Properties of Weld Metal (As welded)

Tensile Strength

N/mm2(kgf/mm2)

Yield Strength

N/mm2(kgf/mm2)

Elongation

%

Charpy V-Notch

°C

J (kgf -m)

560(57.1)

470(48.0)

29

-40

128(13.1)

-45

118(12.0)

Size and Suggested Operating Range (AC or DC+)

Diameter (mm) x Length(mm)

2.6x300

3.2x350

4.0x400

5.0x400

 

Amp

H

70~100

100~140

140~180

180~230

 

V-up/OH

60~90

90~130

120~160

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