ALFUN a.s.

 

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

 

 

 

Drawning steels DC01 – DC05

Steel sheets and strips from low carbon steel are made by cold rolling process. We deliver the thicknesses from 0,4 mm up to 3,0 mm.
The sheets up to 3,0 mm thickness may be delivered split longitudinally or transversally, in many dimensions.

 

Standards:

 

Technical terms of deliveries

EN 10130

Dimensional and shape deviation tolerances

EN 10131

Application: Jsou vhodné na tváření za studena a na výrobky, u kterých je dále upravovaný povrch (lakování, pokovování).

 

Mechanical properties:

Steel mark according to ENMechanical properties
Yield limit - Re max. MPaStrength limit - Rm min. / max. MPaElongation - A80 min. %
DC01 280 270 - 410 28
DC03 240 270 - 370 34
DC04 220 270 - 350 37
DC05 200 270 - 330 39

 

Micro-alloyed steels – with high strength limit for cold forming

The high-strength steel sheets and strips are produced by cold rolling process in the thicknesses from 0,4 do 3,0 mm.
The sheets up to thickness 3,0 mm may be delivered split longitudinally or transversally, in various dimensions.

 

Standards:

 

Technical terms of deliveries EN 10268
Dimensional and shape deviation tolerances EN 10131

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

 

Mechanical properties:

Steel mark according to EN 10268Mechanical properties
Contractual Yield limit Rp0,2 (MPa) min. / max.Strength limit - Rm min./max.Elongation - A80 min. %
HC260LA 240 - 310 340 - 420 27
HC300LA 280 - 360 370 - 470 24
HC340LA 320 - 410 400 - 500 22
HC380LA 350 - 450 430 - 550 20
HC420LA 390 - 500 460 - 580 18

 

Surface quality:
A/B A = standard surface with the part of allowable surface defects B = better

 

Dimensions in mm:Sheet / trimmingCoil / strip
Thickness 0,4 - 3,0 0,4 - 3,0
Width 20 - 1 700 20 - 1 550
Length 100 - 6000 -
Coil´s inner diameter - 508 / 610
Coil´s outer diameter - max. 1 800

 

 

 

Drawn steels DC01 – DC05 + ZE25/25, ZE50/50, ZE75/75

Produced by cold rolling process at ambient temperature which is followed by hot dip galvanising in Zinc bath.We supply them in sheets from 0,6 to 3,0 mm thicknesses, when we can split them longitudinally or transversally, in various dimensions.

 

Standards:

 

Technical terms of deliveries

EN 10152

Dimensional and shape deviation tolerances

EN 10131

Application: Thanks to its corrosion resistance, these multi-purpose materials are used especially for the manufacture of machinery parts, industrial equipments, cars bodywork, roof covering, household appliances, e.g. washing machines, fridges etc. They have good formability and high strength. Because of to very thin Zinc layer thickness, the surface of those part sis treated additionally by varnishing. The electrolytically zinc-coated steel provides a high chemical purity of te coating layer and even, controllable coat thickness (deviation +/-0,1 µm).

 

Mechanical properties:

Steel mark according to EN 10152Mechanical properties
Yield limit Re max. MPaStrength limit - Rm min./ max. MPaElongation - A80 min. %
DC01+ZE 280 270 - 410 28
DC03+ZE 240 270 - 370 34
DC04+ZE 220 270 - 350 37
DC05+ZE 200 270 - 330 39

 

Surface quality:

A = standard surface with the part of allowable surface defects
B = better

Coating thickness:

ZE 25/25
ZE 50/50
ZE 75/75

Surface treatment:

phosphatizing - P
phosphatizing and chemical treatment - PC
chemical passivation - C
phosphatizing, chemical treatment and oiling - PCD
chemical passivation and oiling - CO
phosphatizing and oiling - PO
oiling - O
only with coating, e.i. without surface treatment - U

 

Dimensions in mm:Sheets / trimmingCoil / Trim
Thickness 0,6 - 3,0 0,6 - 3,0
Width 100 - 1 750 20 - 1 550
Length 100 - 6000 -
Coil´s inner diameter - 508 / 610
Coil´s outer diameter - max. 1 800

 

Steel sheets with organic coatings are suitable for an applications, where the corrosion resistance has basic importance in this application.

 

Standards:

 

Technical terms of deliveries

EN 10346

Dimensional and shape deviation tolerances

EN 10143

Application: For roof covering in the building industry, bent profiles, parts for building panel and architectural elements.

Material for varnishing: The basic material for the varnished strips are steel sheets, treated by zinc dipping, drawn and structural qualities or cold rolled sheets without surface treatment.

 

Steel mark EN 10346Mechanical properties
Contractual Yield limit  - Rp0,2 min./ max. MPaStrength limit - Rm min./ max. MPaElongation - A80 min. %
DX51D+Z - 270 - 500 22
DX52D+Z 140 - 300 270 - 420 26
DX53D+Z 140 - 260 270 - 380 30

 

Steel mark according to EN 10346Mechanical properties
Contractual Yield limit - Rp0,2 max. MPaStrength limit - Rm min. MPaElongation - A80 min. %
S220GD+Z 220 300 20
S250GD+Z 250 330 19
S280GD+Z 280 360 18
S320GD+Z 320 390 17

 

Dimensions in mm:Sheets / trimmingCoil / strip
Thickness 0,6 - 2,0 0,6 - 2,0
Width 100 - 1 550 20 - 1 550
Length 100 - 6000 -
Coil´s inner diameter - 508 / 650
Coil´s outer diameter - max. 1 800

 

Varnish surface layer:

Front side: 18 – 25 microns
Back side: protective coat 7 – 10 microns

Zinc surface layer:

Z100 / Z140 / Z200 / Z275

Coating materials:

  • polyester
  • PVDF (polyvinyldenfluorid)

 

Type of coating:

  • one-side
  • both-sides

 

Colour shades:

shades according to RAL scale with correction in compliance with the manuracturer´s scale of colour shades, in version:

  • gloss
  • semi-matt
  • matt

 

We deliver them in strips and sheets in the thickness from 0,6 do 2,0 mm, when we can split them longitudinally or transversally, in various dimensions.

 

Due to the fact that carbon steel is highly prone to corrosion, the steel sheets and strips are protected by a continual hot dip galvanising process, using Zinc (Zn), Zinc-Iron alloy (ZF), Zinc-Aluminium alloy (ZA), Aluminium-Zinc alloy (AZ) or Aluminium-Silicium alloy (AS).

 

Standards:

 

Technical terms of deliveries

EN 10346

Dimensional and shape deviation tolerances

EN 10143

Application: Each of this alloy type is used for a different application depending on the properties of coating; e.g. they are used in structural engineering for the production of metal structures, traffic signs or industrial furnaces, heating equipment and firebreak doors. At home appliances they are manufactured for washing machines, dryers, fridges and microwave ovens.

 

Coating type classification:

Products with Zinc coating – Z
Products with Zinc-Iron alloy coating – ZF
Products with Zinc-Aluminium coating – ZA
Products with Aluminium-Zinc coating – AZ
Products with Aluminium-Silicium coating – AS

 

Deep drawing steels:

DX51D for bending and profiling  
DX52D for drawing
DX53D for deep drawing
DX54D for extra deep drawing
DX55D for extra deep drawing
DX56D for especially deep drawing
DX57D for super deep drawing

 

Mechanical properties:

Steel mark according to EN 10346Mechanical properties
Yield limit - Re min. / max. MPaStrength limit - Rm min. / max. MPaElongation - A80 min. %
DX51D+Z - 270 - 500 22
DX52D+Z 140 - 300 270 - 420 26
DX53D+Z 140 - 260 270 - 380 30
DX54D+Z 120 - 220 260 - 350 36
DX56D+Z 120 - 180 260 - 350 39

 

Structural steels – S220GD – S550GD

They are classified according to increasing minium value of the contractual yield limit Rp0,2.

Mechanical properties:

Steel mark according to EN 10346Mechanical properties
Contractual yield limit  - Rp0,2 min. MPaStrength limit - Rm min. MPaElongation - A80 min. %
S220GD+Z 220 300 20
S250GD+Z 250 330 19
S280GD+Z 280 360 18
S320GD+Z 320 390 17
S350GD+Z 350 420 16

 

Micro-alloyed steels with high strength limit for cold forming

The are classified according increasing minimum value of the contractual yield limit Rp0,2

Mechanical properties:

Steel mark according to EN 10346Mechanical properties
Contractual yield limit - Rp0,2 min. / max. MPaStrength limit - Rm min./ max. MPaElongation - A80 min. %
HX260LAD+Z 260 - 330 350 - 430 26
HX300LAD+Z 300 - 380 380 - 480 23
HX340LAD+Z 340 - 420 410 - 510 21
HX380LAD+Z 380 - 480 440 - 560 19
HX420LAD+Z 420 - 520 470 - 590 17

 

Coating thickness:

Z100, Z140, Z200, Z275
ZF100, ZF120
ZA095, ZA130, ZA185, ZA200, ZA255
AZ100, AZ150, AZ180
AS120, AS150 

Surface treatment:

chemical passivation - C
oiling - O
chemical passivation and oiling - CO
phosphatising - P
phosphatising and oiling - PO
surface enclosure - S

Surface quality:

A – standard surface with the part of allowable surface defects
B - better
C - the best quality

Spangle appearance:

Only products with coating Z
N - not suppressed spangle
M - suppressed spangle

 

Dimensions in mm:Sheet / TrimmingCoil / strip
Thickness 0,4 - 4,0 0,3 - 3,0
Width 100 - 2 000 20 - 1 550
Length 100 - 6 000 -
Coil´s inner diameter   508 / 610
Coil´s outer diameter   max. 1 800

 

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