There is a definite view special steel, generally we all think that is a special chemical composition, can meet the special needs of people steel class, of course this kind of steel has strong features, compared with ordinary steel class, this kind of special steel has higher strength and physical properties, chemical properties, etc., because of the special steel alloy elements, so the solidification characteristics of the special steel and ordinary steel is not the same.

1, alloy steel, thermal physical properties change is bigger, the solidification shrinkage than carbon steel, general steel of different thermal conductivity, solidified structure are also different, so should pay attention to this.

2, strong lively element is contained in steel, general will contain some elements in stainless steel, these elements are combined with oxygen, nitrogen generating some other substance.

3, high temperature mechanical properties of steel depends on steel crack sensitivity, so the high temperature strength low will be prone to crack.

4, the type of steel crack sensitivity were different, but other factors also have relations.