690
Application
The consumables are specifically designed to optimize interaction with alloy 690, which is increasingly preferred over alloy 600 for applications requiring superior high-temperature corrosion resistance. This choice is particularly relevant in the nuclear sector, where the high chromium content of alloy 690 ensures excellent corrosion resistance in oxidizing and sulfurizing atmospheres.
These consumables, in addition to guaranteeing high-quality joints between base materials, are effectively employed in cladding applications on C-Mn steels and low-alloy steels.
The main applications include
nuclear engineering and the production of equipment for handling sulfuric, nitric, and hydrofluoric acids. In most cases, neither preheating nor post-weld heat treatment (PWHT) is required.
nuclear engineering and the production of equipment for handling sulfuric, nitric, and hydrofluoric acids. In most cases, neither preheating nor post-weld heat treatment (PWHT) is required.
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 |
