945 steel belongs to cyclic softening steel, with typical Masing characteristics.
The cyclic inelastic response characteristics of 945 steel are related to the control strain level.
945 naval steel is a self-developed naval steel with superior comprehensive performance. The 440MPa class has high seawater corrosion resistance and high low temperature resistance. It is a strain-rate sensitive material and is currently the main steel used for surface naval structures.
With the increase of strain rate, the dynamic yield point and flow stress of 945 increase significantly. The yield point is 674.62MPa, and the static yield point is 450MPa.
The dynamic fracture toughness of 945 shows up and down two platforms with temperature changes. 
The standard is strictly implemented: GJB5537-2006.
945 steel plate thickness rolling range: 3-32 mm (outside this range is non-standard)
945 delivery status: normalizing + tempering.
In modern warfare, ships will inevitably be affected by contact or non-contact explosion shock waves from the air or water. They will also be subject to the impact of slamming waves, ice and other hard objects. The impact of dynamic loads. 
Therefore, studying the dynamic load response of ships, shipboard equipment and weapons is of great significance for improving their anti-explosion capability, reliability and anti-dynamic load design.
The development of these works is inseparable from the dynamic mechanical property data of materials.
945 steel as a ship material developed by our country has been successfully used in the construction of a certain ship.