Description :

SF-30 is an agglomerated flux adding proper contents of alloy element to maintain the stability of the contents of ferrite in weld metal. It is designed for welding with stainless steel 309/309L to gain characteristics of great crack and corrosion resistibility and mechanic property, but also good weldability involved excellent slag, removal, stable arc, smooth bead appearance and welding efficiency.

Applications :

It is applied in submerged arc welding with stainless steel 309/309L.

Note On Usage:

1. Use of low heat input to get the corrosion resistability and mechanical properties on heat-affected zone.

2. Bake flux at 300-350C for 1hours before use.

Typical Chemical Composition Of Weld Metal (wt%) :

With SW-309/309L

Carbon (C)                   0.03

Manganese (Mn)           1.48

Silicon (Si)                    0.62

Nickel (Ni)                   13.32

Chronium (Cr)              23.25

Typical Mechanical Properties Of Weld Metal :

TS N/mm2                  567

EL%                           41

IV (J) -196C              -

Suggested Welding Parameters:

Diameter (mm)	1.6	2.0	2.4	3.2	4.0
Parameters
Voltage (Volt)	26-28	26-29	26-30	27-31	27-32
Current (Amp)	250-350	300-400	350-500	400-550	450-600
W.F.S (cm/min)	110-280	110-240	100-205	80-150	60-115
Stick Out (mm)	13-19	13-19	19-32	25-38	25-38