DAIKO 152

SMAW
  • NICKEL ALLOYS
690

Description

Basic coated electrode for nickel based 690 alloy
Used especially in the nuclear industry and several acid processing equipment where the higher Chromium content providing greater resistance to stress-corrosion cracking in the nuclear water environment. This electrode can also be used to overlay carbon and low alloy steels. Its basic coating ensures excellent positional welding characteristics with good gap bridging ability. The weld pool and slag are easy to control and facilitate the achievement of a clean bead surface even in narrow preparations. Ease of slag removal reduces post-welding cleaning operations to a minimum.
Specifications
ISO 14172
E Ni 6152
AWS A5.11
ERNiCrFe-6
Shielding
-
Positions
PA, PB, PC, PD, PE, PF
Current
DC+
Packaging Type
Carton box and tube.
Asme qualifications
F-No (QW432)
43
A-No (QW442)
-

Pren

29.36
Chem. Comp. %
DEFAULT
C
0.04
Mn
3
Ni
57.2
Cr
28.7
Nb
1.6
Al
0.3
P
0.003
S
0.001
Mo
0.2
Si
0.55
Cu
0.01
Fe
8.2
Ti
0.2
Mechanical Properties
min
variant
Tensile strength Rm MPa
550
720
Yield strength Rp0.2 MPa
360
490
Elongation A (L0=5d0) %
27
43
Impact Charpy ISO-V
-
100J @ -196°C
Impact Charpy ISO-V
-
-
Welding Parameters
2.5 mm
3.2 mm
4 mm
4.8 mm
Ampere
40A - 65A
70A - 100A
90A - 130A
120A - 160A
Voltage
-
-
-
-
Packaging
60 pcs/kg
29 pcs/kg
19 pcs/kg
13 pcs/kg
Packaging Type
Carton box and tube.
Carton box and tube.
Carton box and tube.
Carton box and tube.
690
Description

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).

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