309H
Application
"Designed for diverse applications, this GMAW wire is suitable for heat-resisting rolled, forged, and cast steels, along with heat-resisting, ferritic CrSiAl steels. Its versatility extends to applications in annealing shops, hardening shops, steam boiler construction, the crude oil industry, and the ceramics industry. Particularly effective in environments with oxidizing gases, nitrogen, and gases containing small amounts of oxygen. Exhibiting exceptional scaling resistance up to 1050 °C, it is a preferred choice for high-temperature applications, offering adaptability in dissimilar joints and overlaying. Recommended preheating and interpass temperatures range from 200 to 300 °C, specifically for ferritic steels.
Alloy Type
High carbon version of 309 stainless steel for high-grade applications service temperature.
Microstructure
Austenitic deposited with a ferrite content of approx. 8 %
Materials
EN W.Nr.: 1.4821 (X15CrNiSi25-4), 1.4823 (GX40CrNiSi27-4), 1.4713 (X10CrAlSi7), 1.4724 (X10CrAlSi13), 1.4742 (X10CrAlSi18), 1.4762 (X10CrAlSi25), 1.4710 (GX30CrSi7), 1.4740 (GX40CrSi17).
ASTM: 327, A297 HC.
Products of the line 309H
| Product name | Process | AWS specifications | EN ISO specifications | |
| DAIKOWT 309H | GTAW |
AWS A5.9
ER309 |
EN ISO 14343-A
W 23 12 H |
|
| DAIKOWM 309H | GMAW |
AWS A5.9
ER309 |
EN ISO 14343-A
G 23 12 H |
|
| DAIKOWS 309H | SAW |
AWS A5.9
ER309 |
EN ISO 14343-A
S 23 12 H |
