Due to its low content of alloy elements and S at supply, our 30 MN B5 may be formed like a S355 class steel. Hot forming must take place at temperatures in the 880 ÷ 1000°C range (time spent above 920°C must be as short as possible).

After hardening, due to its low content of alloy elements, this steel is sufficiently ductile and doesn’t necessarily need tempering (for thicknesses < 6 mm, tempering is no use at all). Where a greater ductility is required, tempering at 450 ÷ 600°C for 1 ÷ 2 hours may be appropriate. [/av_toggle] [av_toggle title='Weldability' tags=''] The low content of alloy elements makes 30 MN B5 not very prone to brittle fracture, even if a small risk exists during processing from one stage to another. In this case, preheating at 150°C may be recommended, together with multiple weld seams and a reduced amount of weld material, especially on thicknesses > 15 mm and in very rigid structures. Except where a joint is required of the same hardness as the base steel, weld materials must feature a lower resistance than the plate itself.

Due to the heating induced by oxy-fuel cutting, the cut surface hardens, but only for just a little more than 1 mm.