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QUARDIAN® High Protection Steel | NLMK Europe - Plate

Measuring the ballistic performance of armour steel is based on determining the kinetic energy of a bullet impact. The energy of the bullet is the major factor in its penetrating capacity,velocity is used as the primary variable in the ballistic testing. Armour performance is totally accountable on the test variability.

Quardian® is high resistance steel that provides ballistic impact and explosions proof. Quardian® is produced by NLMK Europe - Plate, whose expertise in rolling thin steel plates(known for their excellent surface finish) has been recognised for many years.

It complies to NFA 36-800-CLA, EN 1522, VPAM PM 2007. High protection steel QUARDIAN® is delivered as quenched and tempered.

Hardness is tested according to the Brinell hardness test, EN ISO 6506-1 is performed 1-2 mm below the plate surface once per heat treatment individual.

Quardian® ranges from 3,6 and up to 40 mm.

It is mainly used for armoured vehicles, anti-riot trucks, M.R.A.P or Cash & Transit, as well as guardhouses, vehicle hull, blast protection and shelters.

NLMK Europe - Plate is a key player in the niche markets of abrasion resistant steels, very high yield strength steel and high protective steels, all produced in its Belgian mill. Besides Belgium, NLMK Europe - Plate division includes also production facilities in Denmark and Italy.

NLMK Europe overall produces 3.1 million tons of steel products per year.

Range of Quardian Steel Hardness

WIDE RANGE OF QUARDIAN®

QUARDIAN 400

Mechanical properties (minimum values)

  • Charpy V Impact toughness according to EN 10045-1: 30J (longitudinal at -40 °C)
  • Yield Strength(MPa):900
  • Tensile properties (MPa):1100-1480
  • Elongation A5(%):10

QUARDIAN 440

Mechanical properties (minimum values)

  • Charpy V Impact toughness according to EN 10045-1: 27J (longitudinal at -40 °C)
  • Yield Strength (MPa): 1000
  • Tensile properties (MPa): 1250-1580
  • Elongation A5 (%): 10

QUARDIAN 500

Mechanical properties (minimum values)

  • Hardness Guarantee (hardness HBW): 480-540
  • Charpy V Impact toughness according to EN 10045-1: 24J (longitudinal at -40 °C)
  • Yield Strength (MPa): 1200
  • Tensile properties: (MPa): 1450-1800
  • Elongation A5 (%): 8

QUARDIAN 550

QUARDIAN 550 is mainly used in the following applications:

  • Armoured limousines
  • Patrol vehicles
  • Valuable transporters
  • Protected buildings
  • Secured containers
  • Armoured personnel carriers

Mechanical properties (minimum values):

  • Hardness guarantee (hardness HBW): 530-580
  • Charpy V Impact toughness according to EN 10045-1: 14J (longitudinal at -40 °C)
  • Yield Strength (MPa): 1200
  • Tensile properties (MPa): 1660-2200
  • Elongation A5 (%): 7

QUARDIAN 600

QUARDIAN 600 is mainly used in the following applications:

  • Armoured limousines
  • Patrol vehicles
  • Valuable transporters
  • Protected buildings

Hardness Guarantee:

  • Hardness HBW = 570 - 640