... main chemical composition (%) c0.06-0.15, Mn1.40-1.85, si0.80-1.15, p acuities were ... 0.025, s acuities were 0.035, cu acuities 0.50. ... main chemical composition (%) c0.06-0.15, Mn1.40-1.85, si0.80-1.15, p acuities ... were 0.025, s acuities were 0.035, cu acuities 0.50. ... shielded welding, ac arc welder, etc. inverter power supply protect welding machine mig180