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 (inmm)	Hardness (HBW)	Yield strength R_p0.2 (min ksiMPa)	Tensile strength R_m (ksiMPa)	Elongation A₅ (min %)
0.118 - 2.3583.0 - 59.9	280 - 330	116800	130 - 159900 - 1100	13
2.362 - 5.98460.0 - 152.0	280 - 330	—	—	—

Thickness
(inmm)

0.118 - 2.3583.0 - 59.9

Hardness
(HBW)

280 - 330

Yield strength R_p0.2
(min ksiMPa)

116800

Tensile strength R_m
(ksiMPa)

130 - 159900 - 1100

Elongation A₅
(min %)

Thickness
(inmm)

2.362 - 5.98460.0 - 152.0

Hardness
(HBW)

280 - 330

Yield strength R_p0.2
(min ksiMPa)

—

Tensile strength R_m
(ksiMPa)

—

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 on each heat and thickness from 0.236".

Tensile test according to EN ISO 6892 on each heat and thickness under 0.783".

Ultrasonic testing

According to EN 10160 Class E₃S₃ for thicknesses up to 3.149" and E₁S₂ for > 3.149".

Impact Properties

Thickness (inmm)	Min impact energy, transverse test, Charpy V 0.393x0.393" test specimen ¹⁾
0.236 - 3.9376.0 - 100.0	44 ft-lbs / -40 °F60 J / -40 °C
3.941 - 5.984100.1 - 152.0	29 ft-lbs / -40 °F40 J / -40 °C

Thickness
(inmm)

0.236 - 3.9376.0 - 100.0

Min impact energy, transverse test,
Charpy V 0.393x0.393" test specimen ¹⁾

44 ft-lbs / -40 °F60 J / -40 °C

Thickness
(inmm)

3.941 - 5.984100.1 - 152.0

Min impact energy, transverse test,
Charpy V 0.393x0.393" test specimen ¹⁾

29 ft-lbs / -40 °F40 J / -40 °C

¹⁾ Average of three tests. Transverse to rolling direction. Single value min. 70% of specified average. For plate thicknesses under 0.472" sub-size Charpy-V specimen are used. The specified minimum value is then propotional to the specimen cross-section.

Chemical Composition (heat 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 3.937" 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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