ThePipingMart Blog Grades Armox® 500 – Composition, Properties and Uses

Armox® 500 – Composition, Properties and Uses

Armox 500

This blog will look closer at Armox 500 and explore its composition, properties, uses, corrosion resistance, heat treatment, machining, and welding.

What is Armox 500?

Armox 500 is a high-strength steel plate widely used in various industries for its durability, high tensile strength, and excellent toughness. A specially designed ballistic steel plate offers superior protection against sudden impact, explosion, and weapons fire.

Armox 500 Composition

Armox 500 is a low-alloy, high-strength steel plate that contains carbon, manganese, silicon, chromium, nickel, molybdenum, and vanadium as primary alloying elements. It is specifically designed to withstand heavy armour-piercing projectiles and provides superior ballistic protection compared to other steels.

C *)
(MAX %)
SI *)
(MAX %)
(MAX %)
(MAX %)
(MAX %)
(MAX %)
(MAX %)
(MAX %)
(MAX %)
0.32 0.40 1.20 0.010 0.003 1.0 1) 1.80 1) 0.70 0.005

Armox 500 Mechanical properties

Armox 500 has exceptional mechanical properties, including excellent hardness, tensile strength, and toughness. The plate’s range of hardness is from 477 BHN to 534 BHN, with a tensile strength of 1550 MPa to 1850 MPa and elongation at break of 10% to 12%. These properties make Armox 500 ideal for high-stress applications, requiring superior strength and durability.

(MIN %)
(MIN %)
3.0 – 80.0 480 – 540 1250 1450 – 1750 8 10

Armox 500 Physical Properties

The physical properties of Armox 500 make it a sturdy and reliable material for use in different industrial applications. The steel plate has a density of 7.8 g/cm3, a specific heat capacity of 0.47 J/g K, and a thermal conductivity of 43 W/mK. These properties provide good thermal stability, which enables the plate to resist intense heat while offering resistance against armour-piercing projectiles.

Armox 500 Equivalents

Armox 500 Equivalent Grade :
Grade ARMOX 550
USED FOR Armored
DIMENSIONS T: 3 – 15 mm
STANDARDS EN 10029 EN 10051

Armox 500 Thickness

3.0 – 12.9 – 0.0 / + 0.6
13.0 – 20.0 – 0.0 / + 0.8
20.1 – 39.9 – 0.0 / + 1.0
40.0 – 59.9 – 0.0 / + 1.4
60.0 – 80.0 – 0.0 / + 1.6

Armox 500 Uses

Armox 500 is commonly used in applications requiring high strength and durability, such as protection against explosions, projectiles, and heavy-armour piercing. The plate is widely used in the military, security, and defence industries to manufacture armored vehicles, tanks, and other critical defence equipment.

Armox 500 Corrosion resistance

Armox 500 is specially designed to provide excellent resistance against abrasion, wear, and corrosion. The plate’s high-strength steel composition and unique protective coating provide superior protection against environmental exposure, making it an ideal choice for use in harsh environments.

Armox 500 Heat treatment

Armox 500 can be heat-treated to improve its mechanical properties, including increased resistance against shock and impact. The heat-treatment process involves tempering the steel plate at a temperature range of 580°C to 680°C. This process improves the plate’s strength and helps it maintain its toughness and integrity under high-stress situations.

Armox 500 Machining

Armox 500 is a challenging material to machine due to its high hardness and strength. However, this can be overcome by using special machining techniques, such as slow cutting speeds, high feed rates, and low cutting depths. It is essential to have skilled and experienced machinists working with Armox 500 to produce high-quality machined components.

Armox 500 Welding

Armox 500 can be welded using standard welding techniques, including MIG, TIG, and stick welding. However, low carbon content can make it prone to cracking if proper welding techniques are not followed. To prevent cracking, it is essential to preheat the welding area, use low-hydrogen electrodes, and keep the welding heat input low.


Armox 500 is a high-strength steel plate with exceptional ballistic protection and durability in various applications. Its unique composition, physical and mechanical properties, and resistance against abrasion, wear, and corrosion make it an ideal choice in the military, security, and defence industries. Heat treatment, machining, and welding are critical considerations when dealing with Armox 500, and it is essential to have skilled and experienced machinists and welders to produce high-quality components.

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