The lightweight security steel for ultra-high requirements

Our DIFENDER special steel is your best choice when you need to meet ultra-high security requirements with the minimum of weight. DIFENDER protects civilian and military armoured land vehicles and water craft, cash transporters and buildings against ballistic and explosive attack.

DIFENDER offers:

  • excellent resistance against bullet, blast waves impact and splittering in combination with high hardness, strength and low weight
  • large product range with narrow hardness gradation like 270, 300, 350, 400, 450, 500, 550 and 600 HBW
  • quality for warm press hardening such as DIFENDER 600 PH
  • good impact values (longitudinal and transverse) at -40 °C
  • thickenesses up to 150 mm
  • thickness tolerances: -0/+0.8 mm
  • restricted flatness tolerances acc. tab. 5 EN 10029
  • specific testing on mother plate with 3.1 material test report
  • very good processing properties
  • approvals i.e. according to the German Army standard TL 2350-0000

The distribution of DIFENDER is done via direct sales or specialized Steel Service Centers, even small orders.


DIFENDER steels ex stock

First choice specialists keep our DIFENDER steels in stock for you worldwide.


Data sheets & specifications

DIFENDER 270 – high ductility armoured steel
DIFENDER 350 – high ductility armoured steel
DIFENDER 300 – high ductility armoured steel
DIFENDER 600 PH – High strength armoured steel for press hardening
DIFENDER 400 – high strength security steel
DIFENDER – for safety and security
DIFENDER 600 – high strength security steel
DIFENDER 500 – high strength security steel
DIFENDER 450 – high strength security steel
Delivery program – heavy plate



Christoph Dickmann
Head of Sales Department, Machinery & Construction Equipment, Protection Steel

Phone: +49 6831 472385
Fax: +49 6831 47992681


Dr. Axel Grüneklee
Category Manager Sales, Protection Steel

Phone: +49 6831 475791


Johannes Klemm
Head of Marketing & Technical Support, Machinery & Construction Equipment, Steel Service Center, Plate Processing, Protection Steel

Phone: +49 6831 475658
Fax: +49 6831 47999036