DAIKOWM 35.45Nb

GMAW
  • HIGH TEMPERATURE ALLOYS
35.45

Description

Solid wire for matching heat resisting alloys
These consumables are designed to match heat resistant cast alloys with 35%Cr-45%Ni-1%Nb. They have great oxidation and carburization resistance for applications up to 1150°C. The principal applications are pyrolysis coils and reformer tubes in the petrochemical industry.
Specifications
Werkstoff Number
1.4889
Shielding
M12, M13
Positions
PA, PB, PC, PD, PE, PF, PG
Current
DC+
Packaging Type
Drums, B300, D200 and D100 spools.

Pren

36.33
Chem. Comp. %
DEFAULT
C
0.43
Mn
1
Ni
46
Cr
36
Nb
1
Mo
0.1
Si
1.2
Ti
0.1
Mechanical Properties
min
variant
Tensile strength Rm MPa
-
680
Yield strength Rp0.2 MPa
-
530
Elongation A (L0=5d0) %
-
3
Impact Charpy ISO-V
-
-
Impact Charpy ISO-V
-
-
Welding Parameters
1 mm
1.2 mm
Ampere
170A - 210A
180A - 260A
Voltage
24V - 28V
26V - 30V
Packaging
Ø 0,8÷1,6mm
Ø 0,8÷1,6mm
Packaging Type
Drums, B300, D200 and D100 spools.
Drums, B300, D200 and D100 spools.
Description

Application

Such kind of alloys exhibit superior resistance to carburization and oxidation compared to those based on a 25% chromium and 35% nickel composition, particularly in service conditions reaching temperatures up to 1150°C. However, it's worth noting a marginal reduction in creep strength. These alloys are well-suited for critical applications in environments such as pyrolysis coils and reformer tubes within the petrochemical industry. The material's ductility presents a consideration for thicker sections, where preheating may prove beneficial. Generally, standard operating conditions do not necessitate post-weld heat treatment (PWHT). This nuanced approach ensures optimal performance and longevity in applications exposed to high temperatures and aggressive chemical environments.

Alloy Type

High carbon 35Cr-45Ni-1Nb to match heat-resisting castings, which are often micro-alloyed with Ti and Zr.

Microstructure

In the as-welded condition the multi-pass weld metal microstructure consists of austenite with primary eutectic and secondary precipitated carbides.

Materials


PROPRIETARY: Paralloy H46M (Doncasters Paralloy), Manaurite® XT, XTM (Manoir Industries), Centralloy® ET45 Micro (Schmidt + Clemens), Lloyds T80, Lloyds T75MA (LBA), E3545Nb-MA (Engemasa).

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