Cr5Mo1V the case of air quenching tool steel with a deep empty hardened performance, must maintain its complex mold shapes is extremely useful for the requirements of the quenching and tempering. Between air quenching caused by the deformation of only about 1/4 of the Department of manganese oil quenching tool steel, abrasion resistance between the manganese and high carbon and high chromium type tool steel, the steel due to its toughness than any good, especially suited to the requirements to have good wear resistance but also has a special good toughness of the tool, widely used in the mode of cutting and forming die, roll, punch, rolling die thread rolling dies, but also for certain types of scissors piece 

 Chemical composition 

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



 Table of 2-4-1 Cr5Mo1V steel chemical composition (GB / T 1299-2000) of 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 to 0.50 


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



 Table of 2-4-2 Cr5Mo1V steel critical temperature 

 The critical point 
 Ac1 
 Acm 
 Ms 

 Temperature (approx.) / ℃ 
 795 
 - 
 168