DAIKOSTRIP 430

ESW, SAW
  • FERRITIC - MARTENSITIC STAINLESS STEEL
430

Description

Ferritic 17%Cr strip designed for multi-layers cladding of the 410 family alloys.
It can be used in SAW or ESW process to obtain alloy 410 NiMo. The strip is used mainly for repair and maintenance applications. In combination with DAIKOFLUX is giving a weld metal with 14Cr-4Ni-1Mo and a hardness of 370-420 HB. Mainly used for continuous casting rolls, milling rolls, hardfacing applications in steelworks and similar.
Specifications
EN ISO 14343-B
BS430
AWS A5.9
EQ430
Shielding
DAIKOFLUX 940, 942AS, 944
Positions
PA
Current
DC+
Packaging Type
Coils Standard 30x05mm 60x05mm 90x05mm Weight 25 300kg width and specific weights available on request
Asme qualifications
F-No (QW432)
6
A-No (QW442)
7

Pren

16.6

Hardness

220HB - 250HB
Chem. Comp. %
0
C
0.015
Mn
0.3
Cr
16.6
P
0.025
S
0.005
Si
0.35
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
-
-
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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