REDUCED ACTIVATION FERRITE-MARTENSITE STEEL HAVING EXCELLENT HIGH RESISTANCE AND MANUFACTURING METHOD THEREOF

摘要

The present invention relates to a reduced activation ferrite-martensite steel having excellent high resistance and a manufacturing method thereof, comprising: 0.08-0.12 wt% of carbon (C); 0.05-0.15 wt% of silicon (Si); 0.3-0.6 wt% of manganese (Mn); 8.7-9.3 wt% of chromium (Cr); 1.0-1.4 wt% of tungsten (W); 0.1-0.3 wt% of vanadium (V); 0.05-0.09 wt% of tantalum (Ta); 0.005-0.02 wt% of titanium (Ti); 0.005-0.02 wt% of zirconium (Zr); 0.005-0.015 wt% of nitrogen (N); 0.01-0.05 wt% of scandium (Sc); and the remaining consisting of iron (Fe).;COPYRIGHT KIPO 2017