Cr5Mo1V an air quenching tool steel, hardened with a deep space of performance, which requires quenching and tempering must maintain its shape after the mold is extremely complex and useful. As the air quenching the steel caused by the deformation of only about oil quenching system tools manganese steel 1 / 4, wear resistance between the manganese-and high-carbon high-chromium type tool steel, between the toughness of any kind is good, especially for good wear resistance also requires a special tool for good toughness, is widely used in die cutting and forming mold, roll, punch, rolling mode and rolling mode, but also for certain types of scissors slice 

 Chemical composition 

 Cr5Mo1V steel chemical composition shown in Table 2-4-1. 



 Table 2-4-1 Cr5Mo1V steel chemical composition (GB / T 1299-2000) ω /% 



 C 
 Si 
 Mn 
 P 
 S 
 Cr 
 Mo 
 V 

 0.95 ~ 1.05 
 ≤ 0.50 
 ≤ 1.00 
 ≤ 0.030 
 ≤ 0.030 
 4.75 ~ 5.50 
 0.90 ~ 1.40 
 0.15 ~ 0.50 


 Cr5Mo1V critical temperature of steel are shown in Table 2-4-2, the density of 7.84t/m3; quality and specific heat cp is 460.55J / (kg · K); modulus 203000MPa. 



 Table 2-4-2 Cr5Mo1V critical temperature of steel 

 Critical point 
 Ac1 
 Acm 
 Ms 

 Temperature (approximate) / ℃ 
 795 
 - 
 168