DAIKOSTRIP 825

ESW, SAW
  • NICKEL ALLOYS
825

Description

Nickel base strips alloy 825 for cladding applications
It is a Cr-Ni-Mo-Cu filler metal for corrosion resistant weld cladding on carbon and low alloy steels. The weld metal has high corrosion resistance to organic acids and hot sulphuric acid.
Specifications
AWS A5.14
EQNiFeCr-1
Shielding
DAIKOFLUX 940, 942AS, 944
Positions
PA
Current
DC+
Packaging Type
Coils Standard 30x05mm 60x05mm 90x05mm Weight 25 300kg width and specific weights available on request
Asme qualifications
F-No (QW432)
45
A-No (QW442)
-

Pren

33.16
Chem. Comp. %
0
1
C
0.02
0.01
Mn
0.68
0.7
Ni
39.4
39
Cr
22
22.6
Al
-
0.1
P
-
0.01
S
-
0.001
Mo
2.9
3.2
Si
0.8
0.4
Cu
1.6
1.7
Fe
31.5
31
Ti
-
0.9
825
Description

Application

The consumables of subfamily 825 are designed to deposit a weld metal based on Cr-Ni-Mo-Cu, characterized by excellent corrosion resistance, especially against organic acids and sulfuric acid at elevated temperatures. The high nickel content also provides significant resistance to stress corrosion cracking in environments containing chlorides and H₂S. Typical applications include tanks and process vessels, piping systems, heat exchangers, agitators, rotors, cast pumps, and valves, specifically designed for the chemical industry and the oil and gas sector, including offshore scenarios. It is also ideal for corrosion-resistant overlays and for welding dissimilar materials. Preheating is not required, with a recommended interpass temperature not exceeding 150 °C, and heat input should be carefully monitored, especially when using electrodes with a diameter of 4 mm and 5 mm.

Alloy Type

Cr-Ni-Mo-Cu alloy of the generic 825 type.

Microstructure

In the as-welded condition the weld metal microstructure is fully austenitic.

Materials

  • EN W.Nr.: 2.4858 (NiCr21Mo), 1.4563 (X 1 NiCrMoCu 31 27 4)
  • ASTM: N08825, N08028
  • PROPRIETARY: Incoloy® 825, 825CP cast (Special Metals), Nicrofer 4221 (VDM), Nicrofer 3127LC (VDM), Sanicro 28 (Sandvik)

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