Stick Electrodes Böhler FOX K 55

BÖHLER FOX K 55 – basic coated stick electrode for rail, machinery, and container construction

The BÖHLER FOX K 55 is an unalloyed, basic coated stick electrode for demanding welding tasks in steel construction, mechanical engineering, tank construction, and especially in railway and tramway track construction. It is characterized by good welding properties, clean weld metal, and very good toughness properties.

The electrode is preferably used for welding rail joints and crossings in turnouts and is suitable for rail grades with a tensile strength up to 1080 MPa. Furthermore, it can be used for various unalloyed structural steels, fine-grained structural steels up to S355N, as well as heat-resistant pressure vessel steels such as P295GH and P355GH.

Standard designation

BÖHLER FOX K 55 is classified according to the following standards:

Suitable base materials

The electrode is suitable for the following base materials, among others:

E295, E335, E360, C45, C60, GE240, GE260, GE300, P295GH, P355GH, as well as for fine-grained structural steels up to S355N and rail steels with up to 1080 MPa tensile strength.

Mechanical properties of the weld metal

The untreated weld metal achieves typical mechanical quality values of approx. 470 MPa yield strength, 575 MPa tensile strength, and 26% elongation. Particularly noteworthy is the notched bar impact work, typically 160 J at -40 °C, which makes the electrode suitable for applications requiring good toughness properties at low temperatures.

Processing instructions

BÖHLER FOX K 55 can be processed with direct current (positive pole) as well as alternating current. Before use, the electrode should be re-dried according to manufacturer instructions at 300–350 °C for 2 hours.

Approvals

The electrode has approvals according to TÜV, DB, and CE. This makes it particularly interesting for applications in the industrial sector and in railway track construction, where certified welding consumables are required.

Brief description

BÖHLER FOX K 55 is a basic coated stick electrode for unalloyed steels with very good toughness properties. It is particularly suitable for rail joints, switch crossings, mechanical engineering, and container construction, as well as for rail steels with tensile strength up to 1080 MPa.