Usage Of Armour Steel Plates
Any steel before it is used to make an armour steel plate must get approved by the government. These steel plates can be used in defense and combat applications depending on their strength and structure.
Armour and ballistic steel plates have to be manufactured specially, keeping in mind the required steel characteristics and how they can be fit for use in the military.
What Are Armour Steel Plates?
As the name implies, armour steel, also known as protection steel, or ballistic protection steel, is used to defend against an external threat like incoming projectiles. Although various sheets of steel, including stainless steel and manganese steel, are utilized for armour applications, martensitic-hardened steels are the most common.
The martensitic-hardened steel characteristics are mainly the steel’s composition of iron and carbon as its two principal constituents.
History Of Armour Steel
Historically, armour was either made from material made out of mixing leather and fabric or, in the case of metal armour, soldiers used to wear heavy chain mail. Rings of iron and steel interlocked with each other would form this chain mail, which would be worn on top of fabrics for extra protection.
Armour steel plates were introduced during World War 1 when soldiers needed to protect themself from the line of fire and harmful explosives. Steel plates were used in creating helmets and breastplates for these soldiers.
How Armour Steel Is Used Today
Today, armour steel is used to create tanks and other military vehicles. The steel characteristics should match the level of protection expected from the material. These military vehicles are supposed to provide ballistic protection to the people inside from heavy impact.
Besides the military, armour plates are also used in security cars as they are thin enough to be discreet and light in an everyday vehicle. You will also find armour steel used in banks to line the counter or the vaults and improve employee protection in case of robberies.
Armour Steel Characteristics
Some characteristics that must be present in steel for it to be considered armour steel are:
Tensile properties
The tensile strength of the armour steel must be high, around 1750 MPa. The microstructure of the steel in which the tempering happens determines its tensile properties.
Hardness
The high percentage of martensite improves the hardenability of steel. The transformation process is also enhanced by manganese due to the reduction of critical quench speed.
Ballistic performance
This steel characteristic is judged upon the steel’s ability to withstand a bullet. In addition, the initial impact phase, stress propagation phase, and fracture initiation phase are tested when a shot is fired.
To conclude, the defining factor of an armoured plate of steel is the steel characteristics. The steel must be strong, tensile, and ballistic enough to withstand and protect against the heavy impact of bullets and explosives.
Armour steel plates have been around since the first World War, and since then, they have evolved a lot. Today, they are used to make military vehicles bulletproof and safe and are also used discreetly in security vehicles.
