ISO 14174: S A AB 1 66 AC H5 *

A semi-basic flux for joint welding of high quality steel pipes for pipeline transportation systems in the oil and gas industries. Especially recommended for single and multi-wire (up to 5 wires) submerged arc processes in the two- run technique. Very good weld appearance and slag release providing flat welds with low reinforcement and flat weld interfaces free from undercuts. High grain hardness and resistance to abrasion and a low consumption rate with good flux feeding properties in the transport and recovery system.

As a result of low hydrogen levels (less than 5 ml/100 g in the weld deposits) and oxygen levels of about 350 ppm as well as uniform metallurgical behaviour with low silicon and manganese pick-up, constant mechanical properties are obtained even when welding thick-walled tubes in the two-run technique.

Classification:

ISO 14174: S A AB 1 66 AC H5 *)

(EN 760: SA AB 1 66 AC H5)

Characteristics 

Characteristic chemical constituents

Welding Positions:

Flux density: 0.95 kg / dm3 (l)
Grain size acc. to ISO 14174: 2 – 16 (Tyler 10 x 65)
Current-carrying capacity: up to 1.500 A (DC or AC) using one wire

*) Diffusible hydrogen content H5: determined in deposited metal acc. to the method described in ISO 3690

Metallurgical behaviour acc. to ISO 14174 type of current DC

Welding Flux

Application

Production of longitudinal and spiral welded steel pipe grades L360 or X52 to L555 or X80 according to ISO 3183 / API Spec. 5L.

Flux type: Aluminate-Basic