ALFUN a.s.

Hot rolled steel sheets and strips

 

Drawn qualities DD11 -  DD14

Steel sheets, strips and plates from low carbon steel (plates) are made by hot rolling. They are delivered in thicknesses from 1,5 to 12,5 mm. The sheets up to thickness 3,0 mm may be split longitudinally and thickness up to 4,0 mm may be split longitudinally or transversally, in various diemensions.

 

Standards:

 

Technical terms of deliveries

EN 10111

Dimensional and shape deviation tolerances

EN 10051

Application: For the parts of cars that are stressed dynamically; thore are distinguished by an increased cold mouldability.

 

Mechanical propertiesa):

Steel designationMechanical properties b)
ReL c)Rm max.
Mpa
Elongation – minimum
1,0 mm ≤ e
e < 2 mm MPa
2 mm ≤ e
e ≤ 11 mm MPa
Lo = 80 mm
1,0 mm ≤ e
e < 1,5 mm %
1,5 mm ≤ e
e < 2 mm %
2 mm ≤ e
e < 3 mm %
DD11 d) 170 - 360 170 - 340 440 22 23 24
DD12 170 - 340 170 - 320 420 24 25 26
DD13 170 - 330 170 - 310 400 27 28 29
DD14 170 - 310 170 - 290 380 30 31 32

a) Mechanical properties are valid for the hot rolled products, without descaling or descaled chemically and oiled, cold re-rolled or not cold re-rolled.
b) If the product width allows, test samples are taken for the tension test, which is performed crosswise to the rolling direction.
c) If the product doesn´t show a substantial Yield Limit ReL, the contractual Yield Limit Rp0,2 must be used.
d) It is recommended that the products made of material marke DD11 are formed within 6 weeks from the time of their availability.

 

Common structual qualities – S235 – S355

 

Standards:

 

Technical terms of deliveries   

EN 10025-2

Dimensional and shape deviation tolerances

EN 10051

Application: The sheets are suitable for construction purposes, production of bent profiles, parts of heating and power generating equipments, the sheets have a good mouldability.

Mechanické vlastnosti za okolní teploty pro ploché a dlouhé výrobky oceli a jakostních stupňů, u kterých se stanovuje nárazová práce

 

Mechanical properties a):

Designation according to EN 10027-1 and CD 10260Minimum Yield limit ReH, a) MPa b) Nominal thickness mmTensile strength Rm, a) MPa b) Nominal thickness mm
≤ 16< 3≥ 3 ≤ 100
S235JR 235 360 - 510 360 - 510
S235JO 235 360 - 510 360 - 510
S235J2 235 360 - 510 360 - 510
S355JR 355 510 - 680 470 - 630
S355JO 355 510 - 680 470 - 630
S355J2 355 510 - 680 470 - 630
S355K2 355 510 - 680 470 - 630

a) Values given in the table refer to cross test specimens (t) for plates and wide steel with width > 600 mm. In all the other products they refer to the longitudinal test specimens (l).
b) 1 MPa = 1 N/mm2 .

 

Micro-alloyed quantities of structural steels S315MC – S560MC

Hot rolled sheets from structural sheets, micro-alloyed with fine granular structure, intended for cold moulding, with a higher yeild limit for the cold moulding. They are made by cold rolling process and we are delivered them in the thicknesses from 1,5 up to 12,5 mm. In the thickness of up to 3,0 mm they may be split longitudinally or up to 4,0 mm may be delivered split also transversally, in various dimensions.

 

Standards:

 

Technical terms of deliveries

EN 10149-2

Dimensional and shape deviation tolerances

EN 10051

Application: The sheets are suitable for construction purposes, production of bent profiles, parts of heating and power generating equipments, the sheets have a good mouldability.

 

Mechanical properties of the thermo-mechanical rolled steels

Steel designationReH MPa 1)Tensile strength MPa 1) min. / max.Elongation – minimum A 1) % For nominal thickness in mm
< 3 Lo = 80 mm≥ 3 Lo = 5,65 VSo
S315MC 315 390 - 510 20 24
S355MC 355 430 - 550 19 23
S420MC 420 480 - 620 16 19
S460MC 460 520 - 670 14 17
S500MC 500 550 - 700 12 14
S550MC 550 600 - 760 12 14
S600MC 600 650 - 820 11 13
S650MC 650 2) 700 - 880 10 12
S700MC 700 2) 750 - 950 10 12

1) The values obtained by the tensile test are valid for longitudinal test specimens.
2)For thicknesses above 8,0 mm the maximum value of Yield Limit may be lower by 20N/mm2.

 

Dimensions in mm:Sheet / trimmingCoil / strip
Thickness 1,5 - 4,0 1,5 - 3,0
Width 200 - 1 750 20 - 1 550
Length 100 - 6000 -
Coil´s inner diameter - 508 / 610
Coil´s outer diameter - max. 1 800

 



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