DAIKOWS 2Ni

SAW
  • CRYOGENIC STEELS
2Ni

Description

Solid wire for welding 2%Ni steel
Submerged arc wire designed for welding low-alloyed steels for low temperature applications. Typically, they are used for welding 2.5% Nickel steels and other materials requiring good toughness at temperatures as low as -60°C.
Specifications
EN ISO 14171-A
S2Ni2
AWS A5.23
ENi2
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. %
0
C
0.1
Mn
1
Ni
2.25
P
0.01
S
0.01
Mo
0.01
Si
0.15
Cu
0.15
Mechanical Properties
min
variant
Tensile strength Rm MPa
-
610
Yield strength Rp0.2 MPa
-
510
Elongation A (L0=5d0) %
-
24
Impact Charpy ISO-V
-
65J @ -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.
2Ni
Description

Application

Ideal for the production of storage tanks, process plants, and related piping, this product guarantees excellent fracture toughness properties in welded joints at temperatures down to -60 °C. The inclusion of approximately 2.5% Ni enables microstructural refinement and improves tolerance against procedural variations compared to unalloyed C-Mn weld metals. Additionally, it promotes the formation of a stable patina, essential for maintaining the characteristics of weather-resistant steels, thus representing a valid alternative to the use of corresponding consumables. Preheating should be performed according to the base material and its thickness. While AWS specifications for consumables require post-weld heat treatment (PWHT), many applications can be left in the as-welded condition. The need for PWHT is usually determined by the applicable design codes.

Alloy Type

Nominally 2.5%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 2.5% Nickel.
  • ASTM: A203 gr. A & B plate, A333 gr. 6 pipe, A350 gr. LF1 & LF2 forgings, A352 gr. LC2 casting
  • API: 5L X52, 5L X56, 5L X60, 5L X65

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