Hot-rolled cut sheetswith special laser-cutting capability

voestalpine Anarbeitung GmbH

www.voestalpine.com/anarbeitung

Excellent laser-cutting capabilities.

Narrowest tolerances.

Universal application.

The steel grades of the alform® laser series are thermomechanically or normalized hot-rolled steelswith excellent cold formability which are especially suitable for laser cutting. Minimum yield strengthsof 180 up to 420 MPa are offered.

The alform® laser series of voestalpine StahlGmbH is characterized by

uniform surface and interior condition due tothe extremely high degree of purity with re-spect to non-metallic inclusionsminimum residual stress of the sheets to prevent distortions to the greatest possible extent during cuttingoptimum laser cutting capabilities in respect ofcutting speed and cut quality due to limitedphosphorus and sulphur contents as well as amaximum silicon content of 0.03 %

limited flatness tolerances for the flattest possible blanksbest surface quality due to a thin, homogeneousscale layer as a result of thermomechanical ornormalized rolling

The use of alform® laser steels has proven success-ful in fields requiring extremely precise cuts, burr-free cut edges and parts free of distortion.

Cutting capabilitiesas a result of additional special inspections with respect to surface, dimension tolerances and flatnessas a result of highest cutting speeds and optimum shape of thecut edges due to the optimized chemical compositionas a result of the high degree of purity with respect to non-metallic inclusions (leads to vertical cut edges without undercuts)as a result of the homogeneous and uniform layer of secondaryscale that ensures troublefree operation of laser cutting units andfine drag lines of small depth of roughnessas a result of optimized production conditions from the hot stripmill to cutting to size and straightening on the shearing lines(guaranteed flatness deviations � 3 mm per meter)as a result of limited thickness tolerances (50 % of EN 10051, Tables 3 and 4)

Excellent weldabilitydue to a large range of welding parametersdue to cold cracking resistance without preheatingdue to optimum mechanical-technological properties equivalent to the base material of theweldsdue to excellent formability of the weldsdue to a higher tempering resistance than heat-treatable steelsdue to a low tendency to excessive hardening

Uniform mechanical propertiesthe high constancy of the mechanical proper-ties of alform® laser steels guarantees trouble-free processing even during automatic opera-tion

The advantages

Specifications

alform® laser steels are supplied both in normali-zed and thermomechanically rolled condition. In the event that further processing requires a heat treatment exceeding 580 °C, this would lead to a decrease in the minimumyield strength for thermomechanically rolledsteels (M series).

In such a case normalized rolled steels (N series)could be offered, but only up to a minimum yieldstrength of 380 MPa (However, flame straight-ening up to 800 °C is also possible for thermo-mechanically rolled steels).

Different dimen-

sions upon

request only.

Depending on

their application,

alform® laser steels

can be supplied

with pickled or un-

pickled surface.

Upon request, pick-

led alform® laser cut

sheets can also be

supplied with oiled

surface. For pickled

strip there is the ad-

ditional possibility to

apply a passivation

layer.

Sample cut alform® laser 355 M, thickness 10 mm

The current dimensions for pickled alform® laser steels can be found online in the Steel Product Confi-gurator at http://stahl-produktkonfigurator.voestalpine.com.

DimensionsMinimum width: 900 mm

Maximum width in mm for alform® laser steels

alform® laser alform® laser alform® laser alform® laser alform® laser

Sheet thickness 180 N 200 N 380 N 355 M 420 M

[mm] 240 N 380 M

1.80 - 1.89 1,185 1,360 – 1,050 –

1.90 - 1.99 1,260 1,440 1,100 1,115 1,000

2.00 - 2.24 1,320 1,500 1,120 1,165 1,040

2.25 - 2.49 1,505 1,600 1,175 1,340 1,150

2.50 - 2.74 1,600 1,600 1,235 1,600 1,315

2.75 - 2.99 1,600 1,600 1,290 1,600 1,540

3.00 - 3.24 1,600 1,600 1,350 1,600 1,600

3.25 - 3.49 1,600 1,600 1,410 1,600 1,600

3.50 - 3.74 1,600 1,600 1,475 1,600 1,600

3.75 - 4.50 1,600 1,600 1,535 1,600 1,600

4.51 - 12.00 1,600 1,600 1,600 1,600 1,600

1,200 W

1,500 W

2,200 W

2,600 W

4,000 W

0 2 4 6 8 10 12 14 16 18 20

sheet thickness [mm]

cutt

ing

sp

eed

[m

/min

]

10

8

6

4

2

Maximum cutting speeds with optimum cutting parameters

Chemical composition

C Si Mn P S Al Nb 1) V 1) Ti 1)

Steel grade max. max. max. max. max. min. max. max. max.

alform® laser 180 N 0.08 0.03 0.35 0.018 0.020 0.020 – – –

alform® laser 200 N 0.10 0.03 0.45 0.018 0.020 0.020 – – –

alform® laser 240 N 0.16 0.03 0.70 0.018 0.020 0.020 – – –

alform® laser 380 N 0.18 0.03 1.60 0.018 0.012 0.015 0.05 0.05 0.05

alform® laser 355 M 0.10 0.03 1.20 0.018 0.010 0.020 0.05 0.05 0.05

alform® laser 380 M 0.10 0.03 1.20 0.018 0.010 0.020 0.05 0.05 0.05

alform® laser 420 M 0.10 0.03 1.40 0.018 0.010 0.020 0.05 0.05 0.05

1) The total con-

tent of Nb, V and

Ti may not exceed

0.22 %.

Testing Yield Tensile Fracture Bending test Admissible minimum Impact test 1)

direction strength strength elongation 180°transv. inner radius for 90° ChV -20°C

tensile test [MPa] [MPa] [%] min. s=thickness edging and thickness s [J] min.

1) If demanded in the

order, the impact test

will be carried out

with Charpy-V-notch

samples for thickness

> 6 mm. Specified

value is valid for the

average of three

samples, related to a

sample cross section

of 10x10 mm. 2) For thickness

> 8 mm a minimum

value of 27 J will be

guranteed.3) No gurantee

Mechanical properties

Steel grade ReH Rm A80 A5 mandrel Ø s < 3 s = 3 - 6 s > 6

alform® laser 180 N transverse 180 - 290 280 - 360 28 34 0.0 s 0.25 s 0.5 s 1.0 s 3)

alform® laser 200 N transverse 200 - 320 320 - 400 26 32 0.0 s 0.25 s 0.5 s 1.0 s 3)

alform® laser 240 N transverse 240 - 360 360 - 470 23 28 0.0 s 0.25 s 0.5 s 1.0 s 27

alform® laser 380 N transverse 380 - 520 510 - 610 19 24 0.0 s 0.25 s 0.5 s 1.0 s 40 2)

alform® laser 355 M longitudinal 355 - 480 430 - 530 20 24 0.0 s 0.25 s 0.5 s 0.8 s 40

alform® laser 380 M longitudinal 380 - 510 450 - 550 20 24 0.5 s 0.25 s 0.5 s 0.8 s 40

alform® laser 420 M longitudinal 420 - 550 480 - 580 18 22 0.5 s 0.50 s 1.0 s 1.0 s 40

Information and product properties provided in this publication have the sole purpose of giving non-binding technical guidance and by no means replace individual expert advice from our salesand customer service team. Information and product properties provided in this brochure shall not be deemed guaranteed characteristics unless this has been agreed upon individually.Technical changes reserved, errors and misprints excepted. No part of this publication may be reprinted without explicit written permission by voestalpine Anarbeitung GmbH.

voestalpine Anarbeitung GmbHvoestalpine-Straße 34020 Linz, AustriaT. +43/50304/15-6596F. +43/50304/55-73472office.anarbeitung@voestalpine.comwww.voestalpine.com/anarbeitung

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