Mars® 380 – Data

Mars® 380: RHA steel (<430HB) for ballistic protection

Mars®380 is a protection steel (typical 380 HBW) designed for all vehicle structures (main battle tanks, armoured personal carriers …) and for ammunition testing targets.

Mars® 380 steel is highly versatile, combining ease of use even in important thicknesses, with good ballistic properties against all ammunitions.

Standards

INDUSTEEL: Mars® 380
Mars® 380 satisfies requirements of following specifications:

• France : NF A36-800 CLA
• USA : MIL-DTL-12560 CL 1 & 3

Or upon specific agreement according to DEF-STAN 95-13 type 1 & type 2 (with specific analysis and heat treatment)

Chemical analysis

C S P Si Mn Ni Cr Mo V
≤ .30 ≤ .002 ≤ .012 ≤ .4 < 1.20 ≤ 1.8 ≤ 1.5 ≤ .6 ≤ .10

Chemical composition depends on thickness range (particularly Ni and Cr contents) and, possibly, on customer’s specification

Mechanical properties ( In both directions )

Plate thickness (t) Usual hardness range KCV2) @-40°C
Standard 10×10 specimen 3)
mm (HB) J ft.lbs
≤ 13 352 – 388 ≥ 20 ≥ 15
13 < t ≤ 35 331 – 375 ≥ 24 ≥ 18
35 < t ≤ 60 302 – 341 ≥ 32 ≥ 24
60 < t ≤ 80 262 – 331 ≥ 36 ≥ 26
80 < t ≤ 120 248 – 285 ≥ 56 ≥ 41
120 < t ≤ 150 241 – 277 ≥ 64 ≥ 47

In table, are put typical values which may vary in terms of customer or specification requirements.

2) Average of 3 tests. Single value min 70% of specified average.
3) For nominal thicknesses under 11mm, sub-size specimens are used. The specified minimum value is then proportional to the specimen cross section.
Brinell hardness test according to relevant standard (EN ISO 6506-1 / ASTM E10/E110), on each plate and in two places, one at each end of a diagonal, on a milled surface 0,5 to 1mm below plate surface.
Charpy Impact test according to relevant standard (EN ISO 148-1 / ASTM E23) on each heat and thickness from 6mm.
Tensile test according to EN ISO 6892-1, method B on each heat and thickness when specified in the standard or order.
Ultrasonic test is performed according to standard requirements or upon special agreement up to EN 10160 Class S3/E4 .


For more technical details :

 

Mars® 380 – Data

Download the complete datasheet


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.