Armox® 370T Class 2

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General Product Description

Armor steel with excellent bendability.

Armox® 370T Class 2 is a rolled homogeneous armor plate (RHA) that combines good resistance to penetration with excellent toughness.

Benefits of Armox® 370T Class 2 include:

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

Armox® 370T Class 2 is not intended for further heat treatment.

Mechanical Properties

Thickness (mmin)	Hardness (HBW)	Yield strength R_p0.2 (min MPaksi)	Tensile strength R_m (MPaksi)	Elongation A₅ (min %)
3.0 - 59.90.118 - 2.358	280 - 330	800116	900 - 1100130 - 159	13
60.0 - 152.02.362 - 5.984	280 - 330	—	—	—

Thickness
(mmin)

3.0 - 59.90.118 - 2.358

Hardness
(HBW)

280 - 330

Yield strength R_p0.2
(min MPaksi)

800116

Tensile strength R_m
(MPaksi)

900 - 1100130 - 159

Elongation A₅
(min %)

Thickness
(mmin)

60.0 - 152.02.362 - 5.984

Hardness
(HBW)

280 - 330

Yield strength R_p0.2
(min MPaksi)

—

Tensile strength R_m
(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)	Min impact energy for transversal testing, Charpy V 10x10 mm test specimen ¹⁾
6.0 - 100.00.236 - 3.937	60 J / -40 °C44 ft-lbs / -40 °F
100.1 - 152.03.941 - 5.984	40 J / -40 °C29 ft-lbs / -40 °F

Thickness
(mmin)

6.0 - 100.00.236 - 3.937

Min impact energy for transversal testing,
Charpy V 10x10 mm test specimen ¹⁾

60 J / -40 °C44 ft-lbs / -40 °F

Thickness
(mmin)

100.1 - 152.03.941 - 5.984

Min impact energy for transversal testing,
Charpy V 10x10 mm test specimen ¹⁾

40 J / -40 °C29 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 %)	Si^*) (max %)	Mn^*) (max %)	P (max %)	S (max %)	Cr^*) (max %)	Ni^*) (max %)	Mo^*) (max %)	B^*) (max %)
0.32	0.40	1.20	0.010	0.003	1.0 ¹⁾	1.80 ¹⁾	0.70	0.005

C^*)
(max %)

0.32

Si^*)
(max %)

0.40

Mn^*)
(max %)

1.20

P
(max %)

0.010

S
(max %)

0.003

Cr^*)
(max %)

1.0 ¹⁾

Ni^*)
(max %)

1.80 ¹⁾

Mo^*)
(max %)

0.70

B^*)
(max %)

0.005

¹⁾ For plate thicknesses >70 mm Cr ≤ 1.5 and Ni ≤3.5.
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). Plates with thicknesses over 100 mm are delivered with mill edge as standard.

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

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