OP CROMO F537

OP CROMO F537 is a special agglomerated fluoride-basic type. Specially designed for the welding of creep resistant steels 2,25Cr-1Mo-0,25V and 2,25Cr-1Mo with main focus on maximum toughness values at low temperatures and high purity of the weld metal. Weld metal deposited with OE-CROMO S225 shows no reduction in toughness after “Step Cool” heat treatment and therefore the weld metal is not sensitive to “Temper Embrittlement”. The X-factor and J factor are very low. Exceptionally low silicon pick-up and neutral behaviour in terms of manganese are typical of the metallurgical properties of this flux. It can be welded on DC+ and AC at up to 800 A. As the bulk density of this flux is low, so is the rate of consumption. The flux can be welded with the twin-wire process and can also be used for tandem welding with two or more wire electrodes. Controlled X and J factor to satisty step cooling requirement. All weld metal creep test results have been performed, which allows the calculation of the wall thickness of the component, based on the properties of the base metal for operating temperatures up to 550°C. To reach optimal toughness values welding should be performed on AC-polarity. OP CROMO F537 can be used in tandem, twin-arc and multi-wire applications.

Caractéristiques

• Conçu pour l'assemblage des aciers résistants au fluage du type 2,25Cr-1Mo-0,25V et 2,25Cr-1Mo.
• Très faibles valeurs des facteurs X et J dans le métal déposé.
• Très faible enrichissement en silicium.
• Pas de diminution des valeurs de résiliences après un traitement thermique par paliers ( "step-cooling" ) lors de l'utilisation du fil OE-CRMO S225.