Design and Realization of Reliability Enhancement Test for Breech Mechanism of Large-Caliber Guns

Cao Lijun,Xu Tong,Ding Chao,Yu Guibo,Wang Shuhai

Table 4 Element composition of PcrMo

Element C Si Mn Cr Ni Percentage composition 0.32~0.40 0.17~0.37 0.25~0.5 0.9~1.3 ≤0.5 Element Mo Cu P S Percentage composition 0.2~0.3 ≤0.2 ≤0.025 ≤0.025