2083 
 Chemical Composition% 
 C, Si Mn P S of Cr 
 0.38-0.42 ≦ 1.0 ≦ 1.0 ≦ 0.025 ≦ 0.001 12.5-13.5 

 (1) the main features: 
 Good corrosion resistance, abrasion resistance and machinability 
 * Good hardenability 
 * Low rate of deformation 
 * Hardened state under the excellent cast of optical activity 
 * High surface accuracy 
 Can still maintain the original high-precision long-term production 
 Very low inclusion content 
 * Low maintenance costs 
 * A stable production cycle 

 Two main applications: 
 * PVC molds 
 Wear resistance and mold filler, including heat-hardened plastic mold, long-life mold, such as: disposable cutlery mold 
 * The production of optical products, components, such as: cameras, and sunglasses, medical containers, etc. 

 (3) the physical properties of 
 Coefficient of thermal expansion 20-100 ℃ 
 [10-6m / (mxk)] 20-200 ℃ 
 [10-6m / (mxk)] 20-300 ℃ 
 [10-6m / (mxk)] 20-400 ℃ 
 [10-6m / (mxk)] 
 10.5 11.0 11.0 11.5 
 The thermal conductivity of 20 ℃ 
 [W / (mxk)] 350 ° C 
 [W / (mxk)] 700 ° C 
 [W / (mxk)] --- 
 20.0 23.0 26.2 ---