The research and application achievements of die casting steel materials in China are introduced.By studying the influence of alloying elements on material properties of die material

a new die casting die steel with low Si

V and Ni

CO and W has been developed. By reducing the content of S in steel

using RE to change the shape of inclusion and optimizing forging process

the isotropic properties of the die-steel can reach more than 90%；To make a comparison between conventional electric slag

gas shielded electric slag and vacuum consumable  process remelted three die-casting material

  nitrogen in steel is respectively  150×10

-6

90

×10

-6

and 40×10

-6

oxygen content

in steel is respectively

24×10

-6

15×10

-6

and 6×10

-6

By ASPEX Explorer metal quality analyzer inclusions index statistics and analysis of three kinds of technology

using vacuum consumable smelting exponential decline in non-metallic inclusions

non-metallic inclusions and no larger than 5 um

material impact performance boost

7 mm × 10 mm gap impact energy can reach 450 J；To develop high-end die-casting mould material microstructure

the non-notched impact evaluation index standard and specification are established with the development of integrated die casting technology

the future mold material shall develop toward large-scale

super pure

high precision and long life direction.