DAIKOWT 652

GTAW
  • NICKEL ALLOYS
690

Description

Solid rod Ni, 30% Cr, 10% Fe for alloy 690
This wire rod is designed to match alloy 690, often used in place of alloy 600 for high temperature corrosion applications, especially in the nuclear industry where the higher Chromium content provides greater resistance to stress-corrosion cracking in the nuclear water environment. It can also be used in applications requiring resistance to oxidizing acids. It is useful for dissimilar joints involving INCONEL and INCOLOY alloys, and carbon, low-alloy and stainless steels and for overlaying on to steel.
Specifications
ISO 18274
S Ni 6052
AWS A5.14
ERNiCrFe-7
Shielding
I1
Positions
PA, PB, PC, PD, PE, PF
Current
DC-
Packaging Type
5kg carton tube
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
550*
735
Yield strength Rp0.2 MPa
0
500
Elongation A (L0=5d0) %
0
60
Impact Charpy ISO-V
-
80J @ -196°C
Impact Charpy ISO-V
-
-
Welding Parameters
1.6 mm
2.4 mm
Ampere
80A - 120A
130A - 160A
Voltage
10V - 13V
14V - 18V
Packaging
Ø 1,0÷4,0mm
Ø 1,0÷4,0mm
Packaging Type
5kg carton tube
5kg carton 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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