DAIKOWS 430LNb

SAW
  • FERRITIC - MARTENSITIC STAINLESS STEEL
430

Description

Nb stabilised ferritic solid wire for 17%Cr stainless steels
This wire rod deposits a ferritic Nb stabilised stainless steel with good ductility in heat treated condition. The Niobium is essential for preventing intergranular corrosion phenomena and for improving resistance at high temperature. Applications include welding of similar parental metal, weld overlay in automotive industry and in the production of exhaust systems. Welding with this filler metal usually requires preheating and post weld heat treatment.
Specifications
ISO 14343-A
S 18LNb
AWS A5.9
(ER430)
Werkstoff Number
1.4511
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)
7

Pren

18.1

Hardness

220HB - 250HB
Chem. Comp. %
DEFAULT
C
0.015
Mn
0.3
Ni
0.3
Cr
18.1
Nb
0.45
P
0.02
S
0.02
Si
0.4
Mechanical Properties
min
variant
Tensile strength Rm MPa
410
420
Yield strength Rp0.2 MPa
220
275
Elongation A (L0=5d0) %
15
26
Impact Charpy ISO-V
-
-
Impact Charpy ISO-V
-
-
Welding Parameters
2.4 mm
Ampere
250A - 420A
Voltage
28V - 32V
Packaging
Ø 2,0÷4,0mm
Packaging Type
K415 spool and drums.
430
Description

Application

This is a ferritic stainless steel exhibiting good ductility in the heat-treated condition. Applications include welding similar parent metal, weld overlay, and thermal spraying, with a primary use in surfacing sealing faces of gas, water, and steam valves to achieve stainless and wear-resistant overlays. Welding with this filler metal typically necessitates preheating, normally 150°C, and postweld heat treatment for optimal mechanical properties and corrosion resistance. The balanced composition ensures sufficient chromium for corrosion resistance in usual applications while retaining ample ductility in the heat-treated state. Additionally, there are stabilized versions with Niobium and/or Titanium designed for the automotive industry, particularly in exhaust system production, requiring similar preheating and postweld heat treatment.

Alloy Type

Ferritic stainless steels.

Microstructure

Ferrite.

Materials

Surfacing can be performed on all weldable base materials, unalloyed and low-alloyed. Welding of corrosion resistant chromium steels as well as other similar-alloyed steels with C-contents up to 0.20% (repair welding).
EN W.Nr.: 1.4001 (X7Cr14), 1.4006 (X12Cr13), 1.4057 (X17CrNi16-2), 1.4000 (X6Cr13), 1.4002 (X6CrAl13), 1.4016 (X6Cr17), 1.4059 (X17CrNi16-2), 1.4509 (X2CrTiNb18), 1.4510 (X3CrTi17), 1.4511 (X3CrNb17), 1.4512 (X2CrTi12), 1.4520 (X2CrTi17), 1.4712 (X10CrSi6), 1.4713 (X10CrAlSi7), 1.4724 (X10CrAlSi13), 1.4742 (X10CrAlSi18).
ASTM: 403, 405, 409, 410, 429, 430, 430Cb, 430Ti, 439, 431, 442.
UNS: S40300, S40500, S40900, S41000, S42900, S43000, S43035, S43036, S43100, S44200.

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