DAIKOWS 3Ni

SAW
  • CRYOGENIC STEELS
3Ni

Description

Solid wire for welding 3%Ni steel
Submerged arc wire 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 -80°C.
Specifications
EN ISO 14171-A
S2Ni3
AWS A5.23
ENi3
Shielding
DAIKOFLUX 493-W
Positions
PA, PB, PC
Current
DC/AC
Packaging Type
K415 spool and drums.
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
0.02
Si
0.15
Cu
0.15
Mechanical Properties
min
variant
Tensile strength Rm MPa
-
630
Yield strength Rp0.2 MPa
-
550
Elongation A (L0=5d0) %
-
24
Impact Charpy ISO-V
-
50J @ -60°C
Impact Charpy ISO-V
-
-
Welding Parameters
2.4 mm
3.2 mm
4.0 mm
Ampere
300A - 410A
430A - 530A
480A - 580A
Voltage
26V - 30V
27V - 31V
27V - 32V
Packaging
Ø 2,0÷4,0mm
Ø 2,0÷4,0mm
Ø 2,0÷4,0mm
Packaging Type
K415 spool and drums.
K415 spool and drums.
K415 spool and drums.
3Ni
Description

Application

These consumables are specifically designed for the welding of low-alloy steels containing 3.5% Ni. They are ideal for the construction of cryogenic plants, pipelines in the petrochemical industry, and for general applications requiring reliable performance at low temperatures, down to -80 °C. It is important to preheat according to the base material and the thickness of the piece to be welded. Although AWS (American Welding Society) specifications often require post-weld heat treatment (PWHT), many welds can be left in the "as-welded" state. The necessity for PWHT is generally determined by the relevant and applicable design codes.

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