STEEL ALLOY, PLASTIC MOULDING TOOL AND TOUGH-HARDENED BLANK FOR PLASTIC MOULDING TOOLS

摘要

Alloy steel is by weight%, the 0.16 to 0.27 C, 0.06 to 0.13 N, where C + N of the total amount is the condition 0.3 ≤ C + N ≤ 0.4 the satisfaction sikimyeo, 0.1 to 1.5 Si 0.1 to 1.2 Mn, 12.5 to 14.5 Cr , 0.5 to 1.7 Ni, has a chemical composition containing 0.2 to 0.8 Mo, 0.1 V to 0.5. The alloyed steel is suitable as a plastic molding machine.