G-TECH 308LCF

These welding consumables are designed for the welding of 18Cr/8Ni stainless steels, ensuring performance in service temperatures as low as -196°C. Specifically engineered for cryogenic service, the controlled ferrite shielded metal arc welding (SMAW) electrodes and flux-cored wires are well-suited for applications such as pipework and vessels in environments like liquefied natural gas (LNG) facilities. In this context, no preheating is necessary, and the maximum interpass temperature is recommended at 250°C (with the possibility of accepting 300°C for thicker section materials). Furthermore, post-weld heat treatment (PWHT) is not required. To achieve optimal impact properties, it is advisable to utilize heat inputs at the higher end of the allowable ranges during the welding process. This approach ensures that the welded joints maintain the desired mechanical properties, particularly impact resistance, in extremely low-temperature environments like those encountered in cryogenic services.