KF-660/KW-9
KF-660+KW-9 is suitable for welding 550N/mm² grade steel.
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
▎Classification
| AWS A 5.17/A5.17M | F8A4-EG-G/F55A4-EG-G |
| JIS Z3183 | S584-H |
| EN ISO 14171-A | S 46 3 AB SZ |
| GB T5293 | – |
▎Applications and Features
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KF-660+KW-9 is suitable for welding 550N/mm² grade steel.
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KF-660 is an agglomerated aluminate-basic type flux, providing good bead appearance, high current resistance, and excellent slag detachability.
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Ideal for single- or multi-electrode welding of thick plates in steel structures, pressure vessels, shipbuilding, and bridges.
▎Welding Instruction
Please refer to Appendix E.
▎Welding Position
▎Application
Ideal for single- or multi-electrode welding of thick plates in steel structures, pressure vessels, shipbuilding, and bridges.
▎Typical Chemical Composition of Weld Metal (wt%)
| C | Si | Mn | P | S | Mo |
| 0.09 | 0.48 | 1.54 | 0.021 | 0.007 | 0.50 |
▎Typical Mechanical Properties of Weld Metal
| Tensile Strength N/mm² | Yield Strength N/mm² | Elongation % | Charpy V-Notch ℃ | Charpy V-Notch J |
| 624 | 550 | 28 | -30 -40 | 82 61 |