Armox® 370T Class 1

Rolled homogeneous armor for vehicles.

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General Product Description

Rolled homogeneous armor for vehicles.

Armox® 370T Class 1 is a rolled homogeneous armor plate (RHA) that combines good resistance to penetration with excellent toughness.

Benefits of Armox® 370T Class 1 include:

  • Market-leading steel protection
  • Superior workshop properties
  • Optimized solutions
  • Expertise in ballistic protection from SSAB

Armox® 370T Class 1 is not intended for further heat treatment.

Mechanical Properties

Thickness
(mmin)
Thickness
(mmin)
3.0 - 3.90.118 - 0.153
Hardness
(HBW)
380 - 430
Yield strength Rp0.2
(min MPaksi)
1000145
Tensile strength Rm
(MPaksi)
1150 - 1350
Elongation A5
(min %)
8
Thickness
(mmin)
Thickness
(mmin)
4.0 - 5.90.157 - 0.232
Hardness
(HBW)
380 - 430
Yield strength Rp0.2
(min MPaksi)
1000145
Tensile strength Rm
(MPaksi)
1150 - 1350
Elongation A5
(min %)
10
Thickness
(mmin)
Thickness
(mmin)
6.0 - 19.90.236 - 0.783
Hardness
(HBW)
380 - 430
Yield strength Rp0.2
(min MPaksi)
1000145
Tensile strength Rm
(MPaksi)
1150 - 1350
Elongation A5
(min %)
10
Thickness
(mmin)
Thickness
(mmin)
20.0 - 39.90.787 - 1.570
Hardness
(HBW)
340 - 390
Yield strength Rp0.2
(min MPaksi)
900130
Tensile strength Rm
(MPaksi)
1050 - 1250
Elongation A5
(min %)
11
Thickness
(mmin)
Thickness
(mmin)
40.0 - 59.91.575 - 2.3580
Hardness
(HBW)
300 - 350
Yield strength Rp0.2
(min MPaksi)
850123
Tensile strength Rm
(MPaksi)
950 - 1150
Elongation A5
(min %)
12
Thickness
(mmin)
Thickness
(mmin)
60.0 - 100.02.362 - 3.937
Hardness
(HBW)
300 - 350
Yield strength Rp0.2
(min MPaksi)
—
Tensile strength Rm
(MPaksi)
—
Elongation A5
(min %)
—

Mechanical Testing

Brinell hardness test according to EN ISO 6506-1 on each heat treatment individual.

Charpy impact test according to EN ISO 148-1 on each heat and thickness from 6 mm.

Tensile test according to EN ISO 6892-1 on each heat and thickness under 60 mm.

Ultrasonic testing

According to EN 10160 Class E3S3 for thicknesses up to 80 mm and E1S2 for > 80 mm.

Impact Properties

Thickness
(mmin)
Thickness
(mmin)
3.0 - 19.90.118 - 0.783
Min impact energy for transversal testing,
Charpy V 10x10 mm test specimen 1)
20 J / -40 °C15 ft-lbs / -40 °F
Thickness
(mmin)
Thickness
(mmin)
20.0 - 100.00.787 - 3.937
Min impact energy for transversal testing,
Charpy V 10x10 mm test specimen 1)
40 J / -40 °C30 ft-lbs / -40 °F

1) Average of three tests. Transverse to rolling direction. Single value min. 70% of specified average. For plate thicknesses under 12 mm sub-size Charpy-V specimen are used. The specified minimum value is then propotional to the specimen cross-section.

Chemical Composition (ladle analysis)

C *)
(max %)
C *)
(max %)
0.32
Si *)
(max %)
0.40
Mn*)
(max %)
1.20
P
(max %)
0.010
S
(max %)
0.003
Cr*)
(max %)
1.0
Ni*)
(max %)
1.80
Mo*)
(max %)
0.70
B*)
(max %)
0.005

The steel is grain-refined. *) Intentional alloying elements.

Tolerances

More details are given in SSAB brochure Armox® Guarantees or on www.ssab.com.

Thickness

Tolerances according to Armox® Thickness Guarantees.

Armox® Guarantees meet the requirements of EN 10029 Class C, but offers narrower tolerances.

Length and Width

Tolerances conform to EN 10029 or to SSAB´s standard after agreement.

Dimensional tolerances for plate with mill edge according to special agreement. 

Shape

Tolerances according to EN 10029.

Flatness

Tolerances according to Armox® flatness guarantees, which are more restrictive than EN 10029 Class N (steel type L).

Surface Properties

According to EN 10163-2 Class B, Subclass 3.

Delivery Conditions

The delivery condition is QT (Quenched and Tempered).

Delivery requirements can be found in SSAB’s brochure Armox® Guarantees or www.ssab.com.