ULTRA-HIGH STRENGTH, HIGH CO-NI SECONDARY HARDENING MARTENSITIC STEEL AND ITS MANUFACTURING METHOD

摘要

The present invention relates to a Co-Ni-based secondary hardening type martensite alloy and a method for manufacturing the same, and more specifically, to 0.32 to 0.38 wt% of carbon (C), 2.00 to 3.00 wt% of chromium (Cr), and 1.00 wt% of molybdenum (Mo). ∼2.50 wt%, cobalt (Co) 15.50∼17.00 wt%, nickel (Ni) 12.00∼13.00 wt%, tungsten (W) 0.48∼1.60 wt%, vanadium (V) 0.05∼0.3 wt%, titanium (Ti) 0.01 It relates to a Co-Ni-based secondary hardening type martensite alloy and a method for manufacturing the same, including -0.03% by weight and the balance iron (Fe).