690
Application
Engineered to correspond with alloy 690, increasingly preferred over alloy 600 for high-temperature corrosion applications, especially in the nuclear industry, the consumables exhibit a high chromium content, providing robust resistance to elevated temperature corrosion in both oxidizing and sulfidizing atmospheres. Beyond joining similar base materials, these consumables find application in surfacing on C-Mn and low alloy steels. Their versatility extends to critical applications in nuclear engineering, as well as the processing equipment for sulfuric, nitric, and hydrofluoric acids. Remarkably, the welding process for these applications typically does not necessitate preheating or post-weld heat treatment (PWHT), further enhancing operational efficiency in high-temperature environments.
Alloy Type
Ni-30%Cr-10%Fe alloy commonly known as alloy 690.
Microstructure
High alloy nickel base austenite.
Materials
EN W.Nr.: 2.4642 (NiCr29Fe).
ASTM: B163, B166-8.
UNS: N06690.
PROPRIETARY: Inconel® 690 (Special Metals), Nicrofer 6030 (VDM).
Products of the line 690
| Product name | Process | AWS specifications | EN ISO specifications | |
| DAIKOWM 652 | GMAW |
AWS A5.14
ERNiCrFe-7 |
EN ISO 18274
S Ni 6052 |
|
| DAIKOWM 652M | GMAW |
AWS A5.14
ERNiCrFe-7A |
- | |
| DAIKOWT 652 | GTAW |
AWS A5.14
ERNiCrFe-7 |
EN ISO 18274
S Ni 6052 |
|
| DAIKOWT 652M | GTAW |
AWS A5.14
ERNiCrFe-7A |
- | |
| DAIKOWS 652 | SAW |
AWS A5.14
ERNiCrFe-7 |
EN ISO 18274
S Ni 6052 |
|
| DAIKOWS 652M | SAW |
AWS A5.14
ERNiCrFe-7A |
- | |
| DAIKO 152 | SMAW |
AWS A5.11
ERNiCrFe-6 |
EN ISO 14172
E Ni 6152 |
