DAIKOWT 3Ni

GTAW
  • CRYOGENIC STEELS
3Ni

Description

Solid rod for welding 3%Ni steel
Wire rod designed for welding low-alloy steels with 3,5% Ni. Suitable for the construction of cryogenic plant and pipework in petrochemical industry and for general low temperature applications down to -70°C.
Specifications
ISO 14341-B
W 57 P 7 M22 SN71
AWS A5.28
ER80S-Ni3
Shielding
I1
Positions
PA, PB, PC, PD, PE, PF
Current
DC-
Packaging Type
5kg carton tube
Asme qualifications
F-No (QW432)
6
A-No (QW442)
10
Chem. Comp. %
DEFAULT
C
0.1
Mn
1
Ni
3.5
P
0.01
S
0.01
Mo
0.03
Si
0.6
Cu
0.12
Mechanical Properties
min
variant
Tensile strength Rm MPa
550
620
Yield strength Rp0.2 MPa
490
540
Elongation A (L0=5d0) %
17
24
Impact Charpy ISO-V
27J @ -70°C
50J @ -70°C
Impact Charpy ISO-V
-
-
Welding Parameters
1.6 mm
2.4 mm
Ampere
95A - 135A
145A - 205A
Voltage
-
-
Packaging
Ø 1,2÷3,2mm
Ø 1,2÷3,2mm
Packaging Type
5kg carton tube
5kg carton tube
3Ni
Description

Application

Engineered for welding low-alloy steels containing 3.5% Ni, these consumables prove to be highly effective in various applications. Their primary suitability lies in the construction of cryogenic plants and pipework within the petrochemical industry, as well as for general low-temperature purposes extending down to -80°C. When utilizing these consumables, it's crucial to adhere to a preheating regimen aligned with the specifics of the base material and its thickness. While AWS consumable specifications advocate for post-weld heat treatment (PWHT), it's noteworthy that many fabrications often opt to retain the as-welded condition. The decision on whether to employ PWHT is typically determined by the applicable design codes governing the specific project or application.

Alloy Type

Nominally 3,5%Ni low alloy steels.

Microstructure

In the as-welded condition the microstructure is ferritic with a component of acicular ferrite for optimum toughness.

Materials

Low temperature applications, fine-grained steels that contain up to 3.5% Nickel.
ASTM: A203 gr. D, E, F, A350 gr. LF3, A352 gr. LC3, A333 Gr. 3.
UNS: K22103, K21703, J42015.

DO YOU NEED HELP?

Go to our dedicated section or contact us
Daiko supporting the environment
Questo sito si avvale di cookie necessari al suo funzionamento ed utili alle finalità illustrate nella cookie policy.

Carrello

Il carrello è vuoto