L6 Die Steel properties: 

 Factory state: the hardness HB330 ~ 280 

 Uses: suitable for manufacturing precision plastic mold and medium-sized and low melting alloys (such as tin, zinc, lead, lead alloy) die-casting molds. 

 Steel properties: L6 commonly used plastic mold steel, good mechanical properties, high hardenability, section size can be larger than the uniform hardness of steel. L6 has a good cast steel optical performance, the surface of the mold 90 made of low roughness values. The steel molds used to make, generally the first to quenching, hardness 28 ~ 35HRC (ie pre-hardening), after the mold is made by cold working can be used directly, it will ensure the mold performance, but also to avoid the heat caused by deformation of the mold.