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High-carbon steel strip: Annealed (+LC)

Classification of symbolsNumericalEuropean Standard (EN)Mechanical properties and hardness requirements Delivery condition annealed and skin-passed (+LC)Rockwell hardness values1) of steel for springs Annealed and skin-passed (+LC)
Rp0.2 N/mm² maxRm N/mm² max.A80 % min.Max. HVMax. HRB.
C10E1.1121EN 1013234543026135–
C15E1.1141EN 1013236045025140–
16MnCr51.7131EN 1013242055021170–
C22E1.1151EN 101324005002215578
C35E1.1181EN 101324305401917086
C45E1.1191EN 101324555701818088
25CrMo41.7218EN 101324405801917587
42CrMo41.7225EN 101324806201519590
C55S1.1204EN 101324806001718590
C60S1.1211EN 101324956201719591
C67S1.1231EN 101325106401620092
C75S1.1248EN 101325106401520093
C90S1.1217EN 101325456801421594
C100S1.1274EN 101325506901322095
51CrV41.8159EN 101325507001322094
80CrV21.2235EN 101325807201222595

1)Approximate values.

Note: it is possible to specify the hardness values or the tensile strength values, but not both. If neither of the two values is specified, the tensile strength value is calculated.
The hardness/tensile strength specification must fall within a range of 150 N/mm² or 50 HV, unless stated otherwise in the commercial agreement.

Classification of symbolsNumerical classificationEuropean Standard (EN)Chemical Composition %
CSiMnMax. PMax. SCrMoVNiCuCr + Mo +Ni máx./Max
C10E1.1121EN 101320.07 – 0.13max. 0.400.30 – 0.600.0250.035max. 0.40max. 0,10–max. 0,400,30–
C15E1.1141EN 101320.12 – 018max. 0.400.30 – 0.600.0250.035max. 0.40max. 0,10–max. 0,400,30–
16MnCr51.7131EN 101320.14 – 0.19max. 0.401.00 – 1.300.0250.0350.80 – 1.10––0,40–
C22E1.1151EN 101320.17 – 0.24max. 0.400.40 – 0.700.0250.035max. 0.40max. 0.10–max. 0.400,300,63
C35E1.1181EN 101320.32 – 0.39max. 0.400.50-0.800.0250.035max. 0.40max. 0.10–max. 0.400,300,63
C45E1.1191EN 101320.42 – 0.50max. 0.400.50-0.800.0250.035max. 0.40max. 0.10–max. 0.400,300,63
25CrMo41.7218EN 101320.22 – 0.29max. 0.400.60-0.900.0250.0350.90-1.200.15-0.30––0,40–
42CrMo41.7225EN 101320.38 – 0.45max. 0.400.60-0.900.0250.0350.90-1.200.15-0.30––0,40–
C55S1.1204EN 101320.52 – 0.600.15 – 0.350.60 – 0.900.0250.025max. 0.40max. 0.10–max. 0.400,300,63
C60S1.1211EN 101320.57 – 0.650.15 – 0.350.60 – 0.900.0250.025max. 0.40max. 0.10–max. 0.400,300,63
C67S1.1231EN 101320.65 – 0.730.15 – 0.350.60 – 0.900.0250.025max. 0.40max. 0.10–max. 0.400,300,63
C75S1.1248EN 101320.70 – 0.800.15 – 0.350.60 – 0.900.0250.025max. 0.40max. 0.10–max. 0.400,300,63
C90S1.1217EN 101320.85 – 0.950.15 – 0.350.40 – 0.700.0250.025max. 0.40max. 0.10–max. 0.400,300,63
C100S1.1274EN 101320.95 – 1.050.15 – 0.350.30 – 0.600.0250.025max. 0.40max. 0.10–max. 0.400,300,63
51CrV41.8159EN 101320.47 – 0.55max. 0.400.70 – 1.100.0250.0250.90 – 1.20max. 0.100.10 – 0.25max. 0.400,40–
80CrV21.2235EN 101320.75 – 0.850.15 – 0.350.30 – 0.500.0250.0250.40 – 0.60max. 0.100.15 – 0.25max. 0.400,40–

THICKNESS TOLERANCES

A) Specified thickness tolerances for cold rolled strip and strip obtained strapping wide precision rolling w.
According to the EN 10140:2006 Standard.

Nominal Thickness tThickness tolerances according to EN 10140 for nominal widths w of
<125≥ 125 and <600
>≤A
normal		B
fine		C
precision		A
normal		B
fine		C
precision
–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
0.250.40± 0.020± 0.015± 0.010± 0.025± 0.020± 0.012
0.400.60± 0.025± 0.020± 0.012± 0.030± 0.025± 0.015
0.601.00± 0.030± 0.025± 0.015± 0.035± 0.030± 0.020
1.001.50± 0.035± 0.030± 0.020± 0.040± 0.035± 0.025
1.502.50± 0.045± 0.035± 0.025± 0.050± 0.040± 0.030
2.504.00± 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

Sizes in mm.

WIDTH TOLERANCES

Width tolerances for strips with sheared edgesStandard slitting tolerances for VINCO 1)Width tolerances according to the EN 10140 Standard for nominal widths of:
Nominal Thickness t3-1515-5050-150>150<125≥ 125 and <250≥250 and <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± 0.20
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

1) Other, closer dimensional tolerances are possible under a commercial agreement 

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

Sizes in mm.

EDGE CAMBER TOLERANCES

Nominal width (w)Closer edge curve tolerances possible under a commercial agreementEdge curve tolerances according to the EN 10140 Standard
Maximum deviation 1000 mm
Thickness tClass A (Normal) (maximum deviation)Class B (FS) (Reduced) (maximum deviation)
t ≤ 1.20 mmt > 1.20 mm
3 ≤ W < 62.504.00––
6 < W ≤  102.003.00––
10 < W ≤  201.001.505.002.00
20 < W <  251.001.505.002.00
25 ≤ W < 401.001.503.501.50
40 ≤ W < 1251.001.502.501.25
125 ≤ W ≤ 3501.001.502.001.00
350 < W < 600––2.001.00

Sizes in mm.

The absolute value of the tolerance can be divided within that range.

EN 10132-2:2021

Surface finish can be “rough” (RR), “matte” (RM), “smooth” (RL).

Products with MA and MB surface appearance are generally supplied with RL surface finish. If “rough” or “matte” surface finish is requested, the corresponding symbol must be indicated in the designation. 

  • Roughness requirements must be agreed upon at the time of request for quotation or order.
  • Cold-rolled strip should have a final bright surface finish, as obtained during rolling or annealing in a controlled atmosphere.

Surface appearanceSpecial surface finish
 
SymbolCharacteristicsField of application
MABright, clean, metallic surface; pitting grooves and scratches are not allowed.All thicknesses and supply conditions.RR, RM, RL 
MBBright, metallic, clean surface; pitting grooves and scratches are acceptable as long as the smooth, uniform appearance is not substantially affected to the naked eye.Thicknesses ≤ 2.0 mm and supply conditions +LC +CRRM, RL

The different surface finishes for the +LC and +CR conditions are as follows:

FinishedRoughness 
RoughRRRa ≥ 1.5 µm
MatteRM0.6 µm > Ra ≤ 1.8 µm
NormalRL Ra ≤ 0.6 µm
Classification of symbolsNumericalEuropean Standard (EN)Approximate international equivalents
USJapan (JIS)China (GB)
C10E1.1121EN 10132-2
C15E1.1141EN 10132-2SAE 10151015S15CG405115GB 3522
16MnCr51.7131EN 10132-2AISI 51155115––16MnCr–
C22E1.1151EN 10132-3
C35E1.1181EN 10132-3
C45E1.1191EN 10132-31045A682/684S45CG405145GB 3522
25CrMo41.7218EN 10132-3SAE 41304130SCM 420G 410530CrMo–
42CrMo41.7225EN 10132-3SAE 41404140SCM 440G 410542CrMo–
C55S1.1204EN 10132-4
C60S1.1211EN 10132-4
C67S1.1231EN 10132-41065A682/684S65C-CSPG480270GB/T 1222
C75S1.1248EN 10132-41074A682/684––––
C90S1.1217EN 10132-4––––––
C100S1.1274EN 10132-41095A682/684SK4-CSPG4802––
51CrV41.8159EN 10132-46150A505/506SUP 10G480250CrVAGB/T 1222
80CrV21.2235EN 10132-4

ANNEALED STRIP: HIGH CARBON STEEL

MECHANICAL CHARACTERISTICS OF ANNEALED STEEL STRIPS

At VINCO we offer you a wide selection of annealed steel strips with high carbon content so that you can adapt the order to your needs. The annealing process consists of heating the steel strip to a certain temperature and allowing it to cool to room temperature in order to soften the material and eliminate tensions. In addition, depending on the amount of carbon in the steel strip, the mechanical properties and characteristics will vary. The higher the carbon content, the higher the hardness and strength of the strip. The density of high carbon steel strip is 7.85 kg/dm³ regardless of the format in which the product is supplied.

The mechanical characteristics and technical conditions of annealed strip are subject to EN 10132-2 (case hardening steel), EN 10132-3 (quenching and tempering steel) and EN 10132-4 (technical delivery conditions), which apply to cold-rolled strip for heat treatment. In this respect, the mechanical properties and hardness requirements as well as the Rockwell hardness values of spring steels are determined. These characteristics are applied to the supply of annealed and skin-passed strip: the former softens and relieves the stresses of the steel, improving its ductility, and the skin-passed reduces the thickness and improves the roughness of the strip. You can consult all these metrics in the mechanical characteristics section.

The finishing of annealed strip is governed by EN 10132-2:2000 which covers alloyed and non-alloyed cold rolled strip for general applications. The cold rolling process leaves a bright surface finish on the material. The roughness, on the other hand, is agreed at the time of the order, adapting each strip to the needs of our customers.

TOLERANCES IN THICKNESS, WIDTH, LENGTH AND DEFLECTION

Thickness tolerances according to Standard EN 10140:2006 that applies to cold rolled strip in coils or strips obtained from precision strip of rolling width.

Width tolerances are indicated for strips with sheared edges. The standard shear tolerances for VINCO and the tolerances for nominal widths according to EN 10140 are listed here.

With regard to the length tolerances, three nominal length bands are detailed for which the most restricted tolerances that can be closed in commercial agreement are indicated, as well as the positive tolerances with respect to the nominal length detailed in the EN 10140 Standard.

Deflection tolerances refer to the most restricted edge bending tolerances feasible under commercial agreement, as well as to the tolerances according to EN 10140 for Class A (Normal) and Class B (Reduced).

The range of tolerances with respect to the longitudinal corrugation or flatness of strip strips in the rolling direction shall be less than or equal to a maximum of 10 mm out of 1000. This flatness is determined according to the rolling direction of the strip.

All specifications referring to tolerances can be found in the corresponding section of the product sheet. For any other questions, please do not hesitate to contact our team of experts at (+34) 94 412 33 99 or write to us at info@vinco.es.

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