KN-818C2

Type of coating: Iron powder low hydrogen type。
It is suitable for welding 540N/mm2 grade steel for low temperature resistance。
It is ideal for welding in LNG storage tanks or 3.5% Ni steel for low temperature resistance。

Catalog Packaging

▎Classification

AWS A 5.5	AWS A 5.5
JIS Z3211	E5518-N7
EN 2560-A	E 46 6 3Ni B
GB T 5118	E5518-C2

▎Applications and Features

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.

▎Welding Position

▎Welding Instruction

Clean up the contaminations on the steel.
Dry the electrodes at 350~400°C for 60 minutes before welding.
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).
High heat input will lower the impact value. Please carefully select the welding current.
The preheat temperature for thick plate is 90~110°C.

▎Application

It is ideal for welding in LNG storage tanks or 3.5% Ni steel for low temperature resistance.

▎Typical Chemical Composition of Weld Metal (wt%)

C	Si	Mn	P	S	Ni
0.07	0.57	0.90	0.010	0.008	3.41

▎Typical Mechanical Properties of Weld Metal

Tensile Strength kgf/mm2	Yield Strength N/mm²	Elongation %	Charpy V-Notch ℃	Charpy V-Notch J
570	480	32	-75	108

▎Size and Suggested Operating Range (AC or DC±)

	Diameter (mm)	2.6	3.2	4.0	5.0
Amp	H	70-100	100-140	140-180	180-230
current(A)	V-up/OH	60-90	90-130	120-160	–

▎Certification

JISZ3323_TCTW08007

KUANG TAI METAL INDUSTRIAL CO., LTD.

廣泰金屬工業股份有限公司

No.20, Gongye Rd., Erzhen, Guantian Dist.
Tainan City 72042, Taiwan
TEL：886-6-6987615 FAX：886-6-6987315

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