... YWN15,YGX15,YGX1,YG8T,YG15C,YG20C1:Characteristics of Alloy moulds:A: Hard alloy with high hardness,resistant to oxidation, high ... advantage is a reasonable price. The biggest advantage is super toughness,excellent flexural strength,It is strong breaking tenacity resistant ... to high speed repetitive impact.YWN15: The alloy is for moulds forming magetic products such as NdFeB ...