Oerlikon Tenax 128M description: TENAX 128M is a low-alloyed basic coated MMA electrode with a low hydrogen content. It is generally used for the welding of high strength steels with yield strength <850Mpa. The M stands for military standards. For optimal conditions a good balanced t8/5: (heat input, interpass temperature, plate thickness) is recommended. The TENAX 128M is used for main and especially military applications with a higher yield strength up to 850 Mpa and down to -50C. 110-120% efficiency. Good striking.