DAIKOFLUX 480-W

SAW
  • CARBON STEELS
STRUCTURAL STEEL

Description

It is an agglomerated aluminate-basic welding flux suitable for joint welding of low alloy structural steels, boiler steels, pipe steels and fine grain steels. The flux is suitable for single and multilayer welding of longitudinal, circumferential and fillet welds. It can be used for single, tandem, twin and multi-wire welding system. Excellent slag removal in narrow grove welds of thick wall sections. Typical characteristics of this flux is a medium Manganese and Silicon pick up as well as a very low diffusible hydrogen level. This type of flux is suitable for both AC and DC welding.
The main applications of this flux are joint welding of non-alloy and low-alloy structural steels according to EN ISO 10025, fine-grain structural steels with YS<420 MPa and boiler steels such P265GH (H II) and 16Mo3/A355 grade 91.
Specifications
ISO 14174
S A AB 1 67 AC H5
Werkstoff Number
12
Certifications
CE
boniszewski_index
1.7
Packaging Type
25 kg plastic bag/metallic drum
Chem. Comp. %
0
SiO2+TiO2
20
Al2O2+MnO
30
CaO+MgO
30
CaF2
15
Others
5
Description

Application

Carbon-manganese (C-Mn) steels serve as the predominant structural steels extensively used across various applications in the engineering industry. Successful welding of C-Mn steel fabrications is generally achievable, provided the steel composition is known, necessary precautions are taken, and qualified procedures are adhered to. Weldability varies among C-Mn steels, with potential cracking mechanisms, including hydrogen cracking, solidification cracking, and reheat cracking, depending on specific circumstances. These consumables effectively resist such issues, emphasizing the importance of a meticulous welding procedure. While preheat and post-weld heat treatment (PWHT) may not be universally required, the actual specifications depend on the grade and thickness of the base material being welded. Attaining the required mechanical properties in a welded joint with C-Mn steels is achievable through the use of appropriate welding consumables. However, the intricate structural changes during the weld thermal cycle necessitate careful evaluation of properties such as heat-affected zone (HAZ) toughness and hardness.

Alloy Type

Consumables for welding mild and C-Mn steels of 340-510MPa tensile strength.

Microstructure

Predominantly ferrite.

Materials

Carbon and carbon-manganese steels encompass a wide range of structural and pressure-grade materials commonly used in construction, mechanical engineering, and industrial plant applications. Among the EN-standardized grades are non-alloy structural steels intended for general use, known for their good weldability and progressively higher mechanical strength. The “P” grades, on the other hand, are pressure vessel steels typically used in boilers and heat exchangers. Equivalent ASTM specifications cover a similar scope of applications and are widely adopted internationally for structural components, piping, and fittings exposed to pressure or high temperatures. Lastly, API specifications are typical of the oil & gas sector, particularly for the production of pipelines used in hydrocarbon transport, offering increasing levels of mechanical strength and specific performance requirements.
  • EN W.Nr.: S 235 JR, S 235 J0, S 235 J2+N, S 275, S 275 J0, S 275 J2+N, S 355 JR, S 355 J0, S 355 J2+N, S 355 K2+N, P 235 GH, P 265 GH, P 295 GH
  • ASTM: A36, A106 gr. A, A106 gr. B, A106 gr. C, A139, A210 gr. A1, A210 gr. C, A234 gr. WPB, A334 gr. 1, A216 gr. WCA, A216 gr. WCB, A216 gr. WCC
  • API: A, B, X42, X52, X60

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