Armox® 370T Class 2

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

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Thickness (mmin)	Hardness (HBW)	Yield strength R_p0.2 (min MPaksi)	Tensile strength R_m (MPaksi)	Elongation A₅ (min %)	Elongation A₅₀ (min %)
3.0 - 5.90.118 - 0.2320	280 - 330	800116	900 - 1100130 - 159	13	15
6.0 - 59.90.236 - 2.3580	280 - 330	800116	900 - 1100130 - 159	13	15
60.0 - 100.02.362 - 3.937	280 - 330	—	—	—	—

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Hardness
(HBW)

Yield strength R_p0.2
(min MPaksi)

Tensile strength R_m
(MPaksi)

Elongation A₅
(min %)

Elongation A₅₀
(min %)

Thickness
(mmin)

3.0 - 5.90.118 - 0.2320

Hardness
(HBW)

280 - 330

Yield strength R_p0.2
(min MPaksi)

800116

Tensile strength R_m
(MPaksi)

900 - 1100130 - 159

Elongation A₅
(min %)

13

Elongation A₅₀
(min %)

15

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Thickness
(mmin)

6.0 - 59.90.236 - 2.3580

Hardness
(HBW)

280 - 330

Yield strength R_p0.2
(min MPaksi)

800116

Tensile strength R_m
(MPaksi)

900 - 1100130 - 159

Elongation A₅
(min %)

13

Elongation A₅₀
(min %)

15

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Thickness
(mmin)

60.0 - 100.02.362 - 3.937

Hardness
(HBW)

280 - 330

Yield strength R_p0.2
(min MPaksi)

—

Tensile strength R_m
(MPaksi)

—

Elongation A₅
(min %)

—

Elongation A₅₀
(min %)

—

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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 6 mm.

Tensile test according to EN ISO 6892 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

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Thickness (mmin)	Min impact energy for transversal testing, Charpy V 10x10 mm test specimen ¹⁾
6.0 - 100.00.236 - 2.358	60 J / -40 °C44 ft-lbs / -40 °F

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

Thickness
(mmin)

6.0 - 100.00.236 - 2.358

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

60 J / -40 °C44 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)

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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	1.80	0.70	0.005

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Si^*)
(max %)

Mn^*)
(max %)

P
(max %)

S
(max %)

Cr^*)
(max %)

Ni^*)
(max %)

Mo^*)
(max %)

B^*)
(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

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

Tolerances

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

Thickness

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Thickness (mmin)	Tolerance (mmin)
3.0 - 12.90.118 - 0.508	- 0.0 / + 0.8- 0.0 / + 0.0315
13.0 - 19.90.511 - 0.783	- 0.0 / + 1.0- 0.0 / + 0.0394
20.0 - 39.90.787 - 1.571	- 0.0 / + 1.2- 0.0 / + 0.0472
40.0 - 59.91.575 - 2.3580	- 0.0 / + 1.6- 0.0 / + 0.0630
60.0 - 79.92.362 - 3.145	- 0.0 / + 2.0- 0.0 / + 0.0788
80.0 - 100.03.149 - 3.937	- 0.0 / + 2.4- 0.0 / + 0.0945

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Tolerance
(mmin)

Thickness
(mmin)

3.0 - 12.90.118 - 0.508

Tolerance
(mmin)

- 0.0 / + 0.8- 0.0 / + 0.0315

Thickness
(mmin)

13.0 - 19.90.511 - 0.783

Tolerance
(mmin)

- 0.0 / + 1.0- 0.0 / + 0.0394

Thickness
(mmin)

20.0 - 39.90.787 - 1.571

Tolerance
(mmin)

- 0.0 / + 1.2- 0.0 / + 0.0472

Thickness
(mmin)

40.0 - 59.91.575 - 2.3580

Tolerance
(mmin)

- 0.0 / + 1.6- 0.0 / + 0.0630

Thickness
(mmin)

60.0 - 79.92.362 - 3.145

Tolerance
(mmin)

- 0.0 / + 2.0- 0.0 / + 0.0788

Thickness
(mmin)

80.0 - 100.03.149 - 3.937

Tolerance
(mmin)

- 0.0 / + 2.4- 0.0 / + 0.0945

Length and Width

According to SSAB´s dimension program.

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.

Armor steel for high penetration resistance and blast protection

Discover how armor steel and ballistic steel protects people and property from projectiles and explosive charges.

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General Product Description

Mechanical Properties

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Comparison

Mechanical Testing

Ultrasonic testing

Impact Properties

Select one parameter to compare

Comparison

Chemical Composition (ladle analysis)

Select one parameter to compare

Comparison

Tolerances

Thickness

Select one parameter to compare

Comparison

Length and Width

Shape

Flatness

Surface Properties

Delivery Conditions

Armor steel for high penetration resistance and blast protection