DAIKOWM 652M

GMAW
  • NICKEL ALLOYS
690

Description

Solid wire Ni, 29% Cr, 9% Fe, 0,75%Nb for alloy 690
Designed to match alloy 690, often used in place of alloy 600 for high temperature corrosion applications. This product is enriched with Boron and Zirconium to minimize the tendency for ductility-dip cracking and oxide inclusions. It's especially used in the nuclear industry where the higher Chromium content provides greater resistance to stress-corrosion cracking in the nuclear water environment. This product is also suitable to overlay carbon and low alloy steels and can be used in applications requiring resistance to oxidizing acids.
Specifications
AWS A5.14
ERNiCrFe-7A
Shielding
I1, I3
Positions
PA, PB, PC, PD, PE, PF, PG
Current
DC+
Packaging Type
Drums, DIN 760 reel, B300, D200 and D100 spools.
Asme qualifications
F-No (QW432)
43
A-No (QW442)
-

Pren

29.733
Chem. Comp. %
DEFAULT
C
0.01
Mn
0.4
Ni
59.5
Cr
29.7
Nb
0.75
Al
0.25
P
0.005
S
0.001
Mo
0.01
Si
0.2
Cu
0.01
Fe
8.6
Ti
0.45
Mechanical Properties
min
variant
Tensile strength Rm MPa
-
740
Yield strength Rp0.2 MPa
0
500
Elongation A (L0=5d0) %
0
43
Impact Charpy ISO-V
-
100J @ -196°C
Impact Charpy ISO-V
-
-
Welding Parameters
1 mm
1.2 mm
Ampere
140A - 200A
150A - 210A
Voltage
23V - 27V
25V - 29V
Packaging
Ø 0,8÷1,6mm
Ø 0,8÷1,6mm
Packaging Type
product.packaging_types.product.packaging_types.product.packaging_types.Drums, DIN 760 reel, B300, D200 and D100 spools.
product.packaging_types.product.packaging_types.product.packaging_types.Drums, DIN 760 reel, B300, D200 and D100 spools.
690
Description

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.

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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