SSAB Laser® 355ML Plus

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General Product Description

SSAB Laser® 355ML Plus is an advanced thermomechanically rolled weldable fine grain steel for laser cutting and cold forming. The SSAB guarantee for flatness, both before and after laser cutting, is ≤ 3 mm/m deviation.

SSAB Laser® 355ML Plus meets and exceeds the requirements of S355ML in EN 10025-4. Dual certification and CE marking are available upon request.

Dimension Range

	Delivery form	Thickness (mmin)	Width (mmin)	Length (mmin)
SSAB Laser® 355ML Plus	Hot rolled plate	8.0 - 30.00.31 - 1.18	1000 - 330039.37 - 129.9	2000 - 1500078.74 - 590.55

SSAB Laser® 355ML Plus

Delivery form

Hot rolled plate

Thickness
(mmin)

8.0 - 30.00.31 - 1.18

Width
(mmin)

1000 - 330039.37 - 129.9

Length
(mmin)

2000 - 1500078.74 - 590.55

Mechanical Properties

Yield strength R_eH (min MPa)	Tensile strength R_m (MPa)	Elongation A₅ (min %)	Min. inner bending radius for a 90° bend¹⁾ (x t)
355	470 - 630	22	1.0

Yield strength R_eH
(min MPa)

355

Tensile strength R_m
(MPa)

470 - 630

Elongation A₅
(min %)

Min. inner bending radius for a 90° bend¹⁾
(x t)

1.0

The mechanical properties are tested transverse to the direction of rolling.

¹⁾ The bending guarantee is valid for both longitudinal and transverse direction.

Impact Properties

Min. impact energy for longitudinal testing, Charpy V 10x10 mm test specimens
40 J / -50 °C

Min. impact energy for longitudinal testing,
Charpy V 10x10 mm test specimens

40 J / -50 °C

Impact testing according to EN ISO 148-1 is performed on thicknesses ≥ 6mm. The specified minimum value corresponds to a full-size specimen.

Chemical Composition (heat analysis)

C (max %)	Si (max %)	Mn (max %)	P (max %)	S (max %)	CEV (max )
0.12	0.03	1.60	0.020	0.015	0.38

C
(max %)

0.12

Si
(max %)

0.03

Mn
(max %)

1.60

P
(max %)

0.020

S
(max %)

0.015

CEV
(max )

0.38

All SSAB Laser® steels are aluminum-killed (Al ≥ 0.015%) and grain-refined. Additionally, niobium (Nb), vanadium (V), titanium (Ti) and/or boron (B) may be used as single alloying element or in any combination.

Tolerances

All SSAB Laser® products are delivered with SSAB Laser® tolerances, which means increased guarantees compared to corresponding EN standards. Detailed information is available on ssab.com.

Thickness

SSAB Laser® tolerances correspond to 3/4 of EN 10029 as default.

Width

-0/+4-10mm depending on the thickness.

Length

Nominal length (mm)	Tolerance (mm)
2000 ˂ l ≤ 10000	- 0 / + 15
10000 ˂ l ≤ 15000	- 0 / + 20

Nominal length
(mm)

2000 ˂ l ≤ 10000

Tolerance
(mm)

- 0 / + 15

Nominal length
(mm)

10000 ˂ l ≤ 15000

Tolerance
(mm)

- 0 / + 20

Shape

Tolerances according to EN 10029.

Flatness

≤ 3 mm/m flatness deviation for both delivery condition and laser cut parts.

Surface Properties

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

Delivery Conditions

Thermomechanically rolled.

Surface and edge condition

Hot rolled plate: as rolled surface condition and cut edges as default.

Fabrication and Other Recommendations

All SSAB Laser® products have been optimized for laser cutting, cold forming and welding.

SSAB Laser® ML Plus products are thermomechanically rolled weldable fine grain steels for laser cutting and cold forming. It is not suited for heat treatments at temperatures above 580°C, since the material then may lose its guaranteed properties.

For information concerning fabrication, see SSAB´s brochures on www.ssab.com or consult Tech Support.

Appropriate health and safety precautions must be taken when bending, welding, cutting, grinding or otherwise working on the products.