309H
Application
GMAW wire designed for welding heat-resistant rolled steels, forgings, and castings. It is also suitable for heat-resistant CrSiAl ferritic steels, commonly used in annealing and quenching plants, in steam boiler construction, and in the crude oil and ceramics sectors. This product is ideal for applications involving exposure to oxidizing gases, thanks to its high oxidation resistance, up to temperatures of +1000 °C. It is designed for high-temperature applications and is particularly suitable for welding dissimilar joints and overlays. Preheating and interpass temperatures between 200 and 300 °C are recommended 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), 1.4828 (X15CrNiSi20-12), 1.4826 (GX40CrNiSi22-10), 1.4833 (X12CrNi23-13)
- ASTM: 327, A297 HC, 305
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 |
