DAIKOWM 36 INV
GMAW
- NICKEL ALLOYS
INVAR
Description
Solid wire for low thermal expansion alloys
Consumable designed to have very low thermal expansion providing freedom to solidification and reheat cracking. The weld metal is a nickel-iron low-expansion alloy containing 36% nickel. It maintains nearly constant dimensions over the range of normal atmospheric temperatures, and has a low coefficient of expansion from cryogenic temperatures to about 260°C. It has a thermal expansion coefficient of less than 1.5 x 10⁻⁶/°C in the temperature range between 20°C and 100°C. It also retains good strength and toughness at cryogenic temperatures and is used for tanks and piping for storing and transporting liquefied gases.
Specifications
Shielding
I1, I3
Positions
PA, PB, PC, PD, PE, PF, PG
Current
DC+
Packaging Type
Drums, DIN 760 reel, B300, D200 and D100 spools.
Chem. Comp. %
0
C
0.08
Mn
0.3
Ni
36
Cr
0.08
P
0.003
S
0.004
Si
0.12
Fe
63
Mg
0.02
Mechanical Properties
min
variant
Tensile strength Rm MPa
-
450
Yield strength Rp0.2 MPa
-
290
Elongation A (L0=5d0) %
-
42
Impact Charpy ISO-V
-
-
Impact Charpy ISO-V
-
-
Welding Parameters
1
mm
1.2
mm
Ampere
140A - 200A
150A - 210A
Voltage
23V - 27V
25V - 29V
Packaging
Ø 0,8÷1,6mm
Ø 0,8÷1,6mm
Packaging Type
Drums, DIN 760 reel, B300, D200 and D100 spools.
Drums, DIN 760 reel, B300, D200 and D100 spools.
