Home / ESAB Launches New Series of Chrome-Molybdenum Filler Metals

ESAB Launches New Series of Chrome-Molybdenum Filler Metals

ESAB Welding & Cutting Products (Denton, TX) has introduced a new series of B3 SC electrodes and fluxes for SMAW and SAW for 2.25 percent Cr, 1 percent Mo alloyed steels, SA-387 Grade 22, A335 Grade P22, and similar materials.

Posted: December 18, 2021

ESAB’s new B3 SC filler metals for SMAW and SAW feature modernized formulations designed for applications that require high toughness values also after step cooling treatment.

The new series expands ESAB’s line of filler metals for chrome-molybdenum weldments in refinery, petrochemical, power generation, and pressure vessel applications.

The new B3 SC filler metals feature modernized formulations designed for applications that require high toughness in the post-weld heat treated and after step cooling treatment. The weld metal is also designed for increased rupture resistance at high service temperatures. Filler metal chemistry is controlled so weldments have a maximum X-bar (Bruscato Factor) of 10, resulting from a low level of impurity elements to reduce susceptibility to temper embrittlement.

“ESAB offers a complete product solution of B3 alloys for SMAW and SAW processes to meet industry standards, classifications, chemistries, and stringent customers´ mechanical and chemical property requirements,” said Markus Gustafsson, R&D filler metal manager for ESAB.

The new filler materials include:

SMAW electrodes: OK B3 SC (SFA/AWS A5.5 E9018-B3 H4 R, EN ISO E CrMo2 B 32 H5). They are available in diameters from 3/32 to 3/16 in. (2.5 to 5 mm).
SAW:
- Wires: OK Autrod B3 SC (SFA/AWS A5.23 EB3R, EN ISO 24598-A – S S CrMo2). They are available in diameters from 5/64 to 5/32 in. (2 to 4 mm) and come in 66 lb. (30 kg) wire baskets or 617 lb. (280 kg) BigDrums.
- Flux: OK Flux 10.65 (EN ISO 14174 – S A FB 1 65 AC H5, when delivered in BlockPac H4).
- Weld metal: The flux wire combination OK Flux 10.65 + OK Autrod B3 SC is classified to SFA/AWS A5.23 F9P2-EB3R-B3R and EN ISO 24598-A – S S CrMo2 FB.

The B3 filler metals join ESAB’s existing line of filler metals for chrome-molybdenum applications, including those for B2 alloys (OK 76.16, OK Flux 10.63/OK Autrod 13.10 SC, and OK Tigrod 13.16) and B3 alloys (OK 76.26 and OK Tigrod 13.17).

www.esab.com