- Applications
- Welding of 22%Cr-12%Ni steel and heat resistant cast steel Clad steel side welding of 304. Welding of stainless steel to carbon steel or low alloy steel.
- Characteristics
-
- - W 309 is a lime-titania type electrode.
- - As the deposited weld metal contains ferrite in austenitic structure, its crack resistance is good.
- - As weld metal contains much quantity of alloying elements and has stable austenitic structure, W 309 is suitable for welding of the part which is affected by the dilution of mother plate.
- Notes on Usage
-
- - Keep the arc as short as possible and use currents as low as possible.
- - Dry the electrodes at 250~300℃(482~572℉) for 60~90 minutes before use.
- - Pay attention that the dilution of mother plate should not be excessive.
- Sizes Available and Recommended Currents ( AC or DC ± )
-
Sizes Available and Recommended Currents ( AC or DC ± )
| Dia. (mm) |
2.0 |
2.6 |
3.2 |
4.0 |
5.0 |
| Length (mm) |
250 |
300 |
350 |
350 |
350 |
Current
(A) |
F |
30~50 |
50~80 |
70~115 |
100~150 |
140~190 |
| V-up & OH |
25~45 |
45~75 |
60~110 |
90~140 |
- |
- Typical Chemical Composition of All-Weld Metal (wt%)
-
Typical Chemical Composition of All-Weld Metal (wt%)
| C |
Mn |
Si |
P |
S |
Cr |
Ni |
| 0.07 |
1.00 |
0.79 |
0.017 |
0.007 |
24.2 |
12.62 |
- Typical Mechanical Properties of All-Weld Metal
-
Typical Mechanical Properties of All-Weld Metal
| T.S (MPa) |
EL (%) |
| 600 |
39 |
- Welding positions
