DAIKOWS 430

SAW
  • FERRITIC - MARTENSITIC STAINLESS STEEL
430

Description

Ferritic solid wire for 17%Cr stainless steels
This wire rod deposits a ferritic stainless steel with good ductility in heat treated condition. Application include welding of similar parental metal, weld overlay and thermal spraying. Welding with this filler metal usually requires preheating and post weld heat treatment. Optimum mechanical properties and corrosion resistance are obtained only when the weldment is heat treated following the welding operation.
Specifications
EN ISO 14343-A
S 17
AWS A5.9
ER430
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

19.475

Hardness

220HB - 250HB
Chem. Comp. %
DEFAULT
C
0.1
Mn
0.6
Ni
0.6
Cr
17
P
0.03
S
0.03
Mo
0.75
Si
0.5
Cu
0.75
Mechanical Properties
min
variant
Tensile strength Rm MPa
450
530
Yield strength Rp0.2 MPa
300
410
Elongation A (L0=5d0) %
15
25
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
product.packaging_types.product.packaging_types.product.packaging_types.K415-Spule und Fässer.
Anti-wear Characteristics
Adhesive wear
Abrasive wear
Impact
Corrosion
Heat
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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