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Low-Carbon Steel strip: Cold-rolled

MECHANICAL PROPERTIES AND HARDNESS REQUIREMENTS EN 10130 / EN 10139 2)

Numerical classificationDelivery conditionSymbolRe N/mm2Rm N/mm2Elongation at break (min. %)HV hardness
A80min.max.
DC011.0330Skin-passedLCmax. 2803)270 – 410 3)28 1) 3)–115 3)
Hardened by cold rollingC290200 – 380290 – 4301895125
C340min. 250340 – 490–105155
C390min. 310390 – 540–117172
C440min. 360440 – 590–135185
C490min. 420490 – 640–155200
C590min. 520590 – 740–185225
C690min. 630min. 690–215–
DC031.0347Skin-passedLCmax. 240 3)270 – 370 3)34 1) 3)–110 3)
Hardened by cold rollingC290210 – 355290 – 3902295117
C340min. 240340 – 440–105130
C390min. 330390 – 490–117155
C440min. 380440 – 540–135172
C490min. 440490 – 590–155185
C590min. 540min. 590–185–
DC041.0338Skin-passedLCmax. 210 2)270 – 350 3)38 1) 3)–105 3)
Hardened by cold rollingC290220 – 325290 – 3902495117
C340min. 240340 – 440–105130
C390min. 350390 – 490–117155
C440min. 400440 – 590–135172
C490min. 460490 – 590–155185
C590min. 560590 – 690–185215
DC051.0312Skin-passedLCmax. 180 3)270 – 330 3)40 1)–100 3)
DC061.0873Skin-passedLCmax. 180 3)270 – 350 3)38 1) 3)––

NOTE 1) – For thicknesses of 0.5 mm < and ≤ 0.7 mm, the minimum elongation at break value may be decreased by 2 units. For thicknesses between 0.2 mm < and ≤ 0.5 mm, the minimum elongation at break value may be decreased by 4 units. For e ≤ 0.2 mm, the minimum elongation at break value may be decreased by 6 units.
NOTE 2) – For thicknesses below 1.5 mm, a maximum yield strength value of 235 N/mm² is permitted.
NOTE 3) – The values specified on the table are only applicable to surfaces with MA appearances. For surfaces with MB and MC appearances, the yield strength and tensile strength values increase by 20 N/mm² and the elongation at break values decrease by 2 units. Additionally, the HV value increases by 5 units.

MECHANICAL PROPERTIES AND HARDNESS REQUIREMENTS EN 10268

Chemical Composition
Classification of symbolsNumerical classificationEuropean Standard (EN)Types of coatings availableCSiMnpSN max.TiCuAlNb
DC011.0330EN 10130 / EN 10139– / +ZE≤ 0.12–≤ 0.60≤ 0.045≤ 0.045–––––
DC031.0347EN 10130 / EN 10139– / +ZE≤ 0.1–≤ 0.45≤ 0.035≤ 0.035–––––
DC041.0338EN 10130 / EN 10139– / +ZE≤  0.08–≤  0.4≤  0.03≤  0.03–––––
DC051.0312EN 10130 / EN 10139–≤  0.06–≤  0.35≤  0.025≤  0.025–––––
DC061.0873EN 10130 / EN 10139–≤  0.02–≤  0.25≤  0.02≤  0.02–≤  0.3–––
HC260LA1.0480EN 10268–≤ 0.100≤ 0.50≤ 1≤ 0.03≤ 0.025–≤ 0.150–≥ 0.015–
HC420LA1.0556EN 10268–≤ 0.14≤ 0.50≤ 1.60≤ 0.03≤ 0.025–≤ 0.150–≥ 0.015≤ 0.090
11SMn301.0715EN 10087–≤ 0.14≤  0.050.90 – 1.30≤  0.110.27 – 0.33–––––

THICKNESS TOLERANCES

The thickness tolerances are: normal (A), fine (B) or precision (C ).

Nominal thicknessThickness tolerances according to EN 10140 for nominal widths (W) in mm.1) EN 10131
<125≥ 125 Y < 6001200 < W ≤ 1500
>≤ABCABCA
normalfineprecisionnormalfineprecisionnormal
–0,10± 0.008± 0.006± 0.004± 0.010± 0.008± 0.005–
0.100.15±0.010± 0.008± 0.005± 0.015± 0.012± 0.010–
0.150.25±0.015± 0.012± 0.008± 0.020± 0.015± 0.010–
0.250.35± 0.020± 0.015± 0.010± 0.025± 0.020± 0.012–
0.350.40± 0.020± 0.015± 0.010± 0.025± 0.020± 0.012± 0.040
0.400.60± 0.025± 0.020± 0.012± 0.030± 0.025± 0.015± 0.040
0.600.80± 0.030± 0.025± 0.015± 0.035± 0.030± 0.020± 0.050
0.801.00± 0.030± 0.025± 0.015± 0.035± 0.030± 0.020± 0.060
1.001.20± 0.035± 0.030± 0.020± 0.040± 0.035± 0.025± 0.070
1.201.50± 0.035± 0.030± 0.020± 0.040± 0.035± 0.025± 0.090 2)
1.502.00± 0.045± 0.035± 0.025± 0.050± 0.040± 0.030± 0.110 3)
2.002.50± 0.045± 0.035± 0.025± 0.050± 0.040± 0.030± 0.130
2.503.00± 0.050± 0.040± 0.030± 0.060± 0.050± 0.035± 0.150
3.004.00± 0.050± 0.040± 0.030± 0.060± 0.050± 0.035–
4.006.00± 0.060± 0.050± 0.035± 0.070± 0.055± 0.040–
6.008.00± 0.075± 0.060± 0.040± 0.085± 0.065± 0.045–
8.0010.00± 0.090± 0.070± 0.045± 0.100± 0.075± 0.050–

Measurements in mm.
1) Material hardened by cold rolling or under a commercial agreement
2) Nominal Thickness > 1.20 a 1.60
3) Nominal Thickness > 1.60 a 2.00

WIDTH TOLERANCES

Width tolerances for strips with sheared edgescloser dimensional tolerances are possible under a commercial agreement 1)Width tolerances according to the EN 10140 Standard for nominal widths of:
Nominal thickness3-1515-5050-150>150<125≥125 Y <250≥250 Y <600
>=<ABABAB
0,10,4± 0,075 2)± 0,075 2)± 0,075 2)± 0,10 2)± 0,15± 0,10± 0,20± 0,13± 0,25± 0,18
0,40,7± 0,085± 0,09± 0,10± 0,12± 0,15± 0,10± 0,20± 0,13± 0,25± 0,18
0,71,0± 0,085 3)± 0,09 3)± 0,10 3)± 0,12 3)± 0,20± 0,13± 0,25± 0,18± 0,30± 0,20
1,01,5± 0,10 4)± 0,10 4)± 0,10 4)± 0,15 4)± 0,20± 0,13± 0,25± 0,18± 0,30± 0,20
1,52,5on request± 0,13 5)± 0,15 5)± 0,16 5)± 0,25± 0,18± 0,30± 0,20± 0,35± 0,25
2,52,6on requeston request± 0,16± 0,175± 0,25± 0,18± 0,30± 0,20± 0,35± 0,25
2,64,1on requeston request± 0,16± 0,175± 0,30± 0,20± 0,35± 0,25± 0,40± 0,30
4,16,1on requeston request± 0,16± 0,175± 0,35± 0,25± 0,40± 0,30± 0,45± 0,35

Measurements in mm.                                                                          
1) Other, closer dimensional tolerances on request
2) Including the value t=0.4     
3) Including the value t=1
4) Including the value t=1.5
5) Including the value t=2.5

LENGTH TOLERANCES

Length tolerancesCloser tolerances are possible under a commercial agreementPositive tolerance in relation to the nominal length, according to the EN 10140 Standard for the
Nominal length LClass AClass B
L ≤ 1000+ 2+ 10+ 6
1000 < L ≤ 2500+0.002L+ 0.01 L+ 6
L > 2500+0.002L+ 0.01 L+ 0.003 L

Measurements in mm.

EN 10139:2016+A1 APRIL 2020

The surface finish can be “rough”, “matt”, “normal” or “bright”.
Products with MA and MB surface appearances are generally supplied with a “normal” surface finish (RL). If a “rough” (RR) or “matt” (RM) surface finish is requested, the respective symbol must be indicated in the description.
The MC surface appearance must be supplied with a “bright” surface finish (RN).
For delivery conditions C290 to C690, the possible impact on the product’s mechanical properties of stress relaxation or recrystallization due to the action of high temperatures must be taken into account.

Surface appearanceSpecial Surface FinishSuitability for chrome plating and other coatings
SymbolPropertiesField of application
MABright surface, metallically clean. Pores, small defects and scratches are allowed.All thicknesses and all heat treatments.RR, RM, RL–
MBBright surface, metallically clean. Pores, small defects and scratches are allowed, provided that no change to the smooth and even appearance is visible to the naked eye.Thicknesses ≤ 2.0 mm.RM, RLMedium / High
MCBright surface, metallically clean. Pores, small defects and scratches are allowed, provided that they do not affect the bright appearance of the surface.Thicknesses ≤ 1.0 mm.RNHigh

The different surface finishes are characterised by the following average roughness (Ra) reference values:
FinishRoughness
RoughRRRa ≥ 1.5 μm
MattRM0.6 μm > Ra ≤ 1.8 μm
NormalRLRa ≤ 0.6 μm
BrightRNRa ≤ 0.2μm.

EN 10268:2006+A1:2013

Surface appearance: The products covered by this European standard can only be supplied with surface appearance A, as defined in European Standard EN 10130. – some defects are allowed such as pores, light scratches, small marks or slight discolouration when they do not affect the formability or adhesion of surface coatings.
Surface finish: The surface finish of products covered by this European standard must meet the requirements of European Standard EN 10130 for products with a rolling width ≥ 600 mm, and the requirements of the EN 10139 European Standard for products with a rolling width < 600 mm.
Approximate international equivalents
Classification of symbolsNumerical classificationEuropean Standard (EN)US (AISI)Japan (JIS)China (GB)
DC011.0330EN 10139DC01A366SPCCG31411008GB/T 5213
DC031.0347EN 10139DC03A619SPCDG31411006GB/T 5213
DC041.0338EN 10139DC04A620SPCEG31411006GB/T 5213
DC051.0312EN 10139
DC061.0873EN 10139
HC260LA1.0480EN 10268
HC420LA1.0556EN 10268
11SMn301.0715EN 10087Y15A29SUM 22G 48041213GB/T 8731

COLD ROLLED STRIP: COMPOSITION AND CHARACTERISTICS

CHEMICAL COMPOSITION AND MECHANICAL PROPERTIES OF COLD ROLLED STRIP

Within the category of cold rolled strips, VINCO offers you a selection of classifications of different types of steel with specific chemical compositions and properties:

  • DC01, DC03, DC04, DC05 and DC06 steels are characterized by good formability and mechanical strength to a greater or lesser extent depending on their chemical composition. All of them comply with EN 10130 and EN 10139 standards that apply to cold-rolled low carbon steel strip for cold drawing or cold forming.
  • The HC260LA and HC420LA steels differ in that the former has good formability, while the HC420LA steel is characterized by higher mechanical strength. Both are governed by the EN 10268 standard for cold-rolled flat steel products with high yield strength for cold forming.
  • 11SMn30 steel is used in applications that are not mechanically demanding. It complies with the EN 10087 standard, which indicates the technical conditions for the supply of steels that are easy to machine.

In the table of the data sheet you can consult all the chemical compositions of the types of cold-rolled strip in our catalog. The mechanical properties and hardness requirements will vary, for DC01 to DC06 steels, depending on the supply conditions: skin-pass hardened or roll-hardened. For 11SMn30 steel, they must be agreed at the time of ordering.

FINISHES AND TOLERANCES

To determine the finishes of cold-rolled strip, it is necessary to differentiate between products subject to Standard EN 10139 and Standard EN 10268. In the first case, they can have up to four types of finishes: rough, matte, normal or glossy, depending on the surface appearance of the strip -MA, MB and MC-. However, those products complying with EN 10268 are supplied only with surface appearance A as detailed in EN 10130. In addition, for the surface finish, they must comply with the requirements for the width of lamination as set out in European Standards EN 10130 and EN 10139.

Cold-rolled strip tolerances are differentiated into: thickness tolerances which can be normal (A), reduced (B) or precision (C); width tolerances for sheared edge strip and length tolerances.

All information regarding finishes and tolerances can be found in the corresponding sections of the product data sheet.

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