KMS-309

Shielding Gas: Ar+1~2%O2(CO2)
Weld metal is austenitic structure with 23%Cr-12%Ni.
Used for welding dissimilar materials such as mild steel to stainless steel, as well as for a barrier layer in stainless overlays.

Catalog Packaging

▎Classification

AWS A5.9/A5.9M	ER309
JIS Z3321	YS309
EN ISO 14343-A	G 23 12 H
YB T5092	H12Cr24Ni13Si

▎Applications and Features

Weld metal is austenitic structure with 23%Cr-12%Ni.
Moderate ferrite content increases good crack and corrosion resistance.
Used for welding dissimilar materials such as mild steel to stainless steel, as well as for a barrier layer in stainless overlays.
Occasionally used for welding “18-8” base metals when severe corrosion conditions exist or dissimilar metals

▎Welding Position

▎Welding Instruction

Use Ar+1~2%O2 for spray transfer and Ar+1~2%CO2 for short-circuit transfer.
For welding dissimilar alloy, please refer to Appendix I.
For other instructions, please refer to Appendix B and F .

▎Application

Used for welding dissimilar materials such as mild steel to stainless steel, as well as for a barrier layer in stainless overlays.

▎Typical Chemical Composition of Weld Metal (wt%)

C	Si	Mn	P	S	Cr	Ni
0.05	0.42	1.63	0.011	0.009	23.81	13.12

▎Typical Mechanical Properties of Weld Metal

Tensile Strength N/mm²	Yield Strength N/mm²	Elongation %
610	430	40

▎Size and Suggested Operating Range (DC+)

Diameter (mm)	0.8	0.9	1.0	1.2	1.4	1.6
Ar+1~2%CO2	40-120A 15-20V	60-140A 15-21V	80-160A 16-22V	100-210A 17-22V	–	–
Ar+1~2%O2	160-210A 24-28V	170-260A 24-30V	180-280A 24-30V	200-300A 24-30V	210-320A 24-32V	220-330A 24-32V

▎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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