DAIKOWS 309H

SAW
  • AUSTENITIC STAINLESS STEELS
309H

Description

Solid wire for high temperature applications, dissimilar joints and for overlaying
High 0.04%-0.08% carbon version of 309 stainless steel consumables for high-grade applications service temperature for analogous, heat resisting rolled, forged and cast steels as well as for heat resisting, ferritic CrSiAl steels. Mainly used in annealing shops, hardening shops, steam boiler construction, the crude oil industry and the ceramics industry. Austenitic deposite with a ferrite content of approx. 8 %. Preferably used for applications involving the attack of oxidizing gases. Scaling resistance up to +1000 °C.
Specifications
EN ISO 14343-A
S 23 12 H
AWS A5.9
ER309
Shielding
DAIKOFLUX 900-W
Positions
PA, PB, PC
Current
DC/AC
Packaging Type
K415 spool and drums.
Asme qualifications
F-No (QW432)
6
A-No (QW442)
8

Ferrite

~8 FN

Pren

22

Hardness

85HRB
Chem. Comp. %
DEFAULT
C
0.1
Mn
0.8
Ni
11
Cr
22
P
0.015
S
0.01
Si
1.6
Mechanical Properties
Min. per standard
Product
Tensile strength Rm MPa
550
640
Yield strength Rp0.2 MPa
350
400
Elongation A (L0=5d0) %
25
35
Impact Charpy ISO-V
-
81J @ 20°C
Impact Charpy ISO-V
-
-
Welding Parameters
2.4 mm
Ampere
300A - 400A
Voltage
27V - 33V
Packaging
Ø 2,0÷4,0mm
Packaging Type
K415 spool and drums.

Notes

SAW mechanical properties depend on wire/flux combination, refer to flux TDS.
Description

Application

Consumables designed for welding heat-resistant steels, including wrought, forged, and cast grades. Also suitable for ferritic Cr–Si–Al steels with high-temperature resistance. Typical applications include annealing and heat treatment plants, steam boiler construction, and the petrochemical and ceramic industries. The product is particularly suitable for use in oxidizing atmospheres, thanks to its high oxidation resistance up to approximately 1000 °C. Designed for high-temperature service, it is also suitable for welding dissimilar joints and for cladding/overlay applications. For ferritic steels, preheating and interpass temperature control within the range of 200–300 °C are recommended to reduce the risk of cracking and to ensure adequate weld joint properties.

Alloy Type

High carbon version of 309 stainless steel for high-grade applications service temperature.

Microstructure

Austenitic deposited with a ferrite content of approx. 8 %

Materials

  • EN W.Nr.: 1.4821 (X15CrNiSi25-4), 1.4823 (GX40CrNiSi27-4), 1.4713 (X10CrAlSi7), 1.4724 (X10CrAlSi13), 1.4742 (X10CrAlSi18), 1.4762 (X10CrAlSi25), 1.4710 (GX30CrSi7), 1.4740 (GX40CrSi17), 1.4828 (X15CrNiSi20-12), 1.4826 (GX40CrNiSi22-10), 1.4833 (X12CrNi23-13)
  • ASTM: 327, A297 HC, 305

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