DAIKOWM 430LNbTi

GMAW
  • FERRITIC - MARTENSITIC STAINLESS STEEL
430

Description

Nb-Ti stabilised solid wire for 17%Cr stainless steels
This wire rod deposits a ferritic stainless steel stabilised with Nb and Ti that offers good ductility in heat treated condition. The Niobium and Titanium are 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
EN ISO 14343-A
(G 18LNb)
AWS A5.9
(ER430)
Shielding
M12, M13
Positions
PA, PB, PC, PD, PE, PF, PG
Current
DC+
Packaging Type
Drums, B300, D200 and D100 spools.
Asme qualifications
F-No (QW432)
6
A-No (QW442)
7

Pren

18

Hardness

220HB - 250HB
Chem. Comp. %
DEFAULT
C
0.03
Mn
0.55
Ni
0.2
Cr
18
P
0.02
S
0.02
Si
0.65
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
1 mm
1.2 mm
Ampere
160A - 220A
200A - 270A
Voltage
25V - 29V
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.
430
Description

Application

Ferritic stainless steel 430 stands out for its excellent ductility when subject to heat treatments. This material is used in the welding of similar base metals, welding overlays, and thermal spraying. It is predominantly used for overlays on sealing surfaces of valves for gas, water, and steam, creating wear-resistant stainless steel coatings. During welding, it is essential to perform preheating and post-weld heat treatment to achieve the best mechanical properties and corrosion resistance. The composition is expertly balanced to provide sufficient chromium content to ensure adequate corrosion resistance in common applications while maintaining optimal ductility under heat treatment conditions. Niobium and/or titanium-stabilized variants are available, specifically developed for the automotive industry and used in the manufacture of exhaust systems. In these cases, preheating and post-weld heat treatment are also required.

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

Welding & PWHT

This ferritic stainless steel is superior in mechanical performance with adequate carburization resistance. It is extensively used in welding to obtain overlays resistant to thermal and mechanical stress. Preheating and postweld thermal treatment are recommended for optimal welding results.

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