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FAMILIARC™ OW-S50P(E71T-8-H16):Self-shielded flux cored wire for overseas market

The current line-up of self-shielded flux cored wires (self-shielded FCWs) include [F]OW-S50H, used in on-site welding of steel pipe piles in the flat and horizontal positions, and [F]OW-S50T, which is suitable for welding thin plates with thickness of 1.0 to 4.5 mm. They are highly reputed but marketed in Japan only. However, as the pursuit of high welding efficiency becomes a rising global trend, [F]OW-S50P, a self-shielded FCW matching AWS A5.20 E71T-8-H16 has been developed in order to target overseas markets. Table 1 shows KOBELCO ’ s line-up of self-shielded FCWs.

Table 1: KOBELCO’s line-up of self-shielded FCWs

	Welding position	Specification
[F]OW-S50P	All	AWS A5.20 E71T-8-H16 EN ISO 17632-B T 49 3 T8-1 NO A
[F]OW-S50H	1F, 1G, 2F and 2G	AWS A5.20 E70T-7 EN ISO 17632-B T 49 Y T7-0 NO A
[F]OW-S50T	All	AWS A5.20 E71T-GS

Tables 2 and 3 show the chemical compositions and mechanical properties of all-deposited metals by [F]OW-S50P, respectively.

Table 2: Chemical composition of all-deposited metal by [F]OW-S50P

C	Si	Mn	P	S	Al
0.14	0.20	0.85	0.015	0.002	0.65

Table 3: Mechanical properties of all-deposited metal by [F]OW-S50P

YS (MPa)	TS (MPa)	El (%)	vE-30℃ (J)
440	560	27	105

[F]OW-S50P provides excellent bead shape and penetration in all positions. Figure 1 shows the results of butt joint welding in the horizontal, vertical upward and overhead positions.

Horizontal position welding	Vertical upward position welding	Overhead position welding
YS: 471 MPa TS: 563 MPa vE-30℃: 61 J	YS: 441 MPa TS: 545 MPa vE-30℃: 67 J	YS: 429 MPa TS: 534 MPa vE-30℃: 74 J

Figure 1: Results of butt joint welding in all positions by [F]OW-S50P

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