Mars® 220

Mars® 220: Medium hardness steel (440 HB) for blast protection

Mars® 220 armour steel is dedicated to modern vehicles structures for protection against mines.
Mars® 220 grade has the aimed mechanical properties hardness, thoughness, ductility for protection against mines explosions, while keeping an excellent workablilty, particulary bending and welding for realization of specific complex designs defined for blast protection.

Standard

INDUSTEEL: Mars® 220
Mars® 220 satisfies requirements of following specifications:
• France : NF A 36-800 THD1
• Germany : TL 2350 Quality O
• U.K. : DEF STAN 95-24 Class 3A (420-480HB)
• USA : MIL 12560 Class 4a (420-460HB)

Chemical analysis

C S P Si Mn Ni Cr Mo B
4 to 50 mm (.16″ to 2″) ≤ .22 ≤ .005 ≤ .015 ≤ .5 ≤ 1.5 ≤ 2.0 ≤ 1 ≤ .6 ≤ 0.005
>50 to 80 mm (2″ to 3.15″) ≤ .24 ≤ .005 ≤ .015 ≤ .5 ≤ 1.5 ≤ 5 ≤ 1 ≤ .6 ≤ 0.005

Mechanical properties

As supplied Hardness Yield Strength UTS Elongation Charpy V
-40°Transversal to rolling direction
HB MPa ksi MPa ksi 5d(%) J ft.lbs
4 to 50 mm
(.16″ to 2″)
Required by spécifications 400 – 480 ≥1100 ≥ 160 ≥ 1250 ≥ 182 ≥ 10 ≥ 27 ≥ 20
Typical values 440 1150 165 1450 210 13 48 35
>50 to 80 mm
(2″ to 3.15″)
Minimal Values ≥400 ≥800 ≥115 ≥1300 ≥188 ≥9 ≥20 ≥15

For more technical details :

 

Mars® 220

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Technical data and information are to the best of our knowledge at the time of publication. However, they may be subjected to some slight variations due to our ongoing research programmes. Therefore, we suggest that information be verified at time of enquiry or order. Furthermore, in service, real conditions are specific for each application. The data presented here are for the purpose of description only, and can be considered as guarantees only when written formal approval has been provided by our company. Industeel reserves the right to change its product range at any time without prior notice.