30mncrnimo armor steel 685


Protective alloy material for combat equipment, armor steel. The steel grades are 603, 616, 617, 675, 685, 695, 6211 armor steel. And artillery armor steel, high pressure armor steel.

603 armor steel 30crmnmore standard GJB 31a-2000
616 armor steel 22SiMn2TiB standard GJB 1496b-2014
617 armor steel 30crni2mnmore GJB 31a-2000
675 armor steel 30CrNi3MoV GJB 31a-2000
685 armor steel 30mncrnimo standard Q / ASB 108-2010
695 armor steel 42crnimov GJB 8486-2015
6211 armor steel 30crnimonb standard GJB 8486-2015

30mncrnimo armor steel 685

685 armor steel

28Cr2Mo Gy5 high pressure bulletproof armor steel standard GJB 1496-92
26simnmo GY4 bullet proof steel standard GJB 1496-92
32mn2si2a F-2 bullet proof steel standard GJB 3166-1998

The armor piercing test of Cr Ni Mo armor plate with 10 mm thickness and hardness of hrc44 ~ 56 was carried out by using 53 type 7.62 mm wo-109c armor piercing incendiary bomb. The influence of hardness on the ballistic performance of armor plate under high hardness and ultra-high hardness was studied
On the one hand, the hardness increases, which increases the energy consumed by the projectile to open the crater and the plastic Reaming work consumed by the projectile. When the hardness exceeds a certain value, the projectile may be broken, which is conducive to the improvement of anti bullet performance. On the other hand, the hardness increases, The results show that the critical instability strain of adiabatic shear is reduced, which is easy to induce plug failure, and the plasticity and toughness are reduced, which may lead to the back plate collapse failure, thus the ballistic performance is reduced. In this test system, the opposite effect of the above two aspects results in that the back strength limit of armor plate basically does not change with the change of hardness