NLMK Europe Plate

NLMK Europe Plate

Rue de Clabecq 101, 1460 ITTRE (Belgium)

High protection HBW 550 steel - Quardian 550

High protection HBW 550 steel - Quardian 550

Quardian 550 is a protection plate steel, which combines excellent properties in ballistic resistance with high strength and an average hardness of 550 HBW.

Quardian 550 is mainly recommended for the following applications:

armoured limousines

• patrol vehicles

• valuable transporters

• protected buildings

• secured containers

armoured personnel carriers

The selection of the material is up to the purchaser.

NLMK Clabecq supplies this product in the following range:

  • Thickness: 5 - 15 mm

  • Width: 1500 - 2000 mm

Technical Characteristics:

Quardian 550 is delivered as quenched and tempered.

Hardness guarantee

HBW = 530 - 580

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

Other mechanical properties (minimum values)

  • Charpy V Impact toughness according to EN 10045-1 o 14J (longitudinal at -40 °C)

  • Yield Strength (MPa) 1200

  • Tensile properties (MPa) 1660-2200

  • Elongation A5 (%) 7

Note: Average of 3 tests. Single value min 70% of specified average. Thickness <12 mm sub

sized Charpy V specimen have been used.

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