Description:
307Si produces a tough, ductile, 19% Cr / 9% Ni / 7% Mn austenitic stainless weld metal which is highly crack resistant. It is intended for joining hardenable steels, armour plate, 13% Mn steels and difficult-to-weld steels, without the need for preheating. It is also recommended for dissimilar joints between stainless and mild or medium carbon steels. Welds produced with 307Si can be PWHT without risk of sigma-phase formation and consequent loss of ductility. The deposit work hardens from 200 HV to 450 HV.
Applications: Buffer layers on 13% Mn steels used in rock crushing and earth moving equipment, prior to hardfacing. Reclaiming 13% Mn steels. The surfacing of rails, rail crossings, frogs etc. Buffer layers in highly restrained repair work.
Welding current: DC+
Wire composition, wt.%
| |
C |
Si |
Mn |
P |
S |
Cr |
Ni |
Mo |
Cu |
N |
| Min |
|
0.65 |
5.5 |
|
|
17.0 |
7.5 |
|
|
|
| Typical |
0.08 |
0.85 |
7.0 |
0.025 |
0.2 |
19.0 |
9.0 |
0.2 |
0.2 |
1.0 |
| Max |
0.20 |
1.0 |
7.5 |
0.030 |
0.030 |
20.0 |
9.5 |
0.3 |
0.3 |
0.07
|
Shielding gas:
Acc. to EN 439:
M12 Ar + 1-3% 02, 16-21 l/min
M13 Ar + 2% CO2, 16-21 l/min