Shape and dimensional tolerances

Tolerances on shape and dimensions comply with standard EN 10131: 2006

 

Tolerances on thickness

Tolerance (EN 10131: 2006)

Availability

Full thickness tolerance

Available

Special thickness tolerances

Available

50% of full thickness tolerance

Refer before ordering

Tolerances closer than special tolerances may be agreed at the time of enquiry.
Tolerances in mm.

 

Tolerances on thickness for steel grades with a specified minimum yield strength
Re < 260N/mm2.

Nominal
thickness

Normal tolerances for a nominal width of 1

Special tolerances (S) for a
nominal width of 1 2

 

≤ 1200

> 1200

> 1500

≤ 1200

> 1200

> 1500

 

≤ 1500

 

 

≤ 1500

 

≥ 0.35

≤ 0.40

± 0.03

± 0.04

± 0.05

± 0.020

± 0.025

± 0.030

> 0.40

≤ 0.60

± 0.03

± 0.04

± 0.05

± 0.025

± 0.030

± 0.035

> 0.60

≤ 0.80

± 0.04

± 0.05

± 0.06

± 0.030

± 0.035

± 0.040

> 0.80

≤ 1.00

± 0.05

± 0.06

± 0.07

± 0.035

± 0.040

± 0.050

> 1.00

≤ 1.20

± 0.06

± 0.07

± 0.08

± 0.040

± 0.050

± 0.060

> 1.20

≤ 1.60

± 0.08

± 0.09

± 0.10

± 0.050

± 0.060

± 0.070

> 1.60

≤ 2.00

± 0.10

± 0.11

± 0.12

± 0.060

± 0.070

± 0.080

> 2.00

≤ 2.50

± 0.12

± 0.13

± 0.14

± 0.080

± 0.090

± 0.100

> 2.50

≤ 3.00

± 0.15

± 0.15

± 0.16

± 0.100

± 0.110

± 0.120

1. Around cold-rolled welds - the pickling welds - an increase of 20% at the most over the thickness
   is allowed over a length of 15 metres.
2. For special tolerances, not all combinations of thickness and width are available in every product.
   Please contact us for more details.

 

Tolerances on thickness for steel grades with a specified minimum yield strength 
260 N/mm2 ≤ Re < 340N/mm2.

Nominal
thickness

Normal tolerances for a nominal width of 1

Special tolerances (S) for a
nominal width of 1 2

 

≤ 1200

> 1200

> 1500

≤ 1200

> 1200

> 1500

 

≤ 1500

 

 

≤ 1500

 

≥ 0.35

≤ 0.40

± 0.04

± 0.05

± 0.06

± 0.025

± 0.030

± 0.035

> 0.40

≤ 0.60

± 0.04

± 0.05

± 0.06

± 0.030

± 0.035

± 0.040

> 0.60

≤ 0.80

± 0.05

± 0.06

± 0.07

± 0.035

± 0.040

± 0.050

> 0.80

≤ 1.00

± 0.06

± 0.07

± 0.08

± 0.040

± 0.050

± 0.060

> 1.00

≤ 1.20

± 0.07

± 0.08

± 0.10

± 0.050

± 0.060

± 0.070

> 1.20

≤ 1.60

± 0.09

± 0.11

± 0.12

± 0.060

± 0.070

± 0.080

> 1.60

≤ 2.00

± 0.12

± 0.13

± 0.14

± 0.070

± 0.080

± 0.100

> 2.00

≤ 2.50

± 0.14

± 0.15

± 0.16

± 0.100

± 0.110

± 0.120

> 2.50

≤ 3.00

± 0.17

± 0.18

± 0.18

± 0.120

± 0.130

± 0.140

1. Around cold-rolled welds - the pickling welds - an increase of 20% at the most over the thickness
   is allowed over a length of 15 metres.
2. For special tolerances, not all combinations of thickness and width are available in every product.
   Please contact us for more details.

 

Tolerances on thickness for steel grades with a specified minimum yield strength
340N/mm2 ≤ Re ≤ 420N/mm2.

Nominal
thickness

Normal tolerances for a nominal width of 1

Special tolerances (S) for a
nominal width of 1 2

 

≤ 1200

> 1200

> 1500

≤ 1200

> 1200

> 1500

 

≤ 1500

 

 

≤ 1500

 

≥ 0.35

≤ 0.40

± 0.04

± 0.05

± 0.06

± 0.030

± 0.035

± 0.040

> 0.40

≤ 0.60

± 0.05

± 0.06

± 0.07

± 0.035

± 0.040

± 0.050

> 0.60

≤ 0.80

± 0.06

± 0.07

± 0.08

± 0.040

± 0.050

± 0.060

> 0.80

≤ 1.00

± 0.07

± 0.08

± 0.10

± 0.050

± 0.060

± 0.070

> 1.00

≤ 1.20

± 0.09

± 0.10

± 0.11

± 0.060

± 0.070

± 0.080

> 1.20

≤ 1.60

± 0.11

± 0.12

± 0.14

± 0.070

± 0.080

± 0.100

> 1.60

≤ 2.00

± 0.14

± 0.15

± 0.17

± 0.080

± 0.100

± 0.110

> 2.00

≤ 2.50

± 0.16

± 0.18

± 0.19

± 0.110

± 0.120

± 0.130

> 2.50

≤ 3.00

± 0.20

± 0.20

± 0.21

± 0.130

± 0.140

± 0.150

1. Around cold-rolled welds - the pickling welds - an increase of 20% at the most over the thickness
   is allowed over a length of 15 metres.
2. For special tolerances, not all combinations of thickness and width are available in every product.
   Please contact us for more details.

 

Tolerances on thickness for steel grades with a specified minimum yield strength
Re > 420N/mm2.

Nominal
thickness

Normal tolerances for a nominal width of 1

Special tolerances (S) for a
nominal width of 1 2

 

≤ 1200

> 1200

> 1500

≤ 1200

> 1200

> 1500

 

≤ 1500

 

 

≤ 1500

 

≥ 0.35

≤ 0.40

± 0.05

± 0.06

± 0.07

± 0.035

± 0.040

± 0.050

> 0.40

≤ 0.60

± 0.05

± 0.07

± 0.08

± 0.040

± 0.050

± 0.060

> 0.60

≤ 0.80

± 0.06

± 0.08

± 0.10

± 0.050

± 0.060

± 0.070

> 0.80

≤ 1.00

± 0.08

± 0.10

± 0.11

± 0.060

± 0.070

± 0.080

> 1.00

≤ 1.20

± 0.10

± 0.11

± 0.13

± 0.070

± 0.080

± 0.100

> 1.20

≤ 1.60

± 0.13

± 0.14

± 0.16

± 0.080

± 0.100

± 0.110

> 1.60

≤ 2.00

± 0.16

± 0.17

± 0.19

± 0.100

± 0.110

± 0.130

> 2.00

≤ 2.50

± 0.19

± 0.20

± 0.22

± 0.130

± 0.140

± 0.160

> 2.50

≤ 3.00

± 0.22

± 0.23

± 0.24

± 0.160

± 0.170

± 0.180

1. Around cold-rolled welds - the pickling welds - an increase of 20% at the most over the thickness
   is allowed over a length of 15 metres.
2. For special tolerances, not all combinations of thickness and width are available in every product.
   Please contact us for more details.

 

Tolerances on width

Tolerance 
(EN 10131: 2006)

Availability

Normal width tolerances

Available

Special width tolerances

Refer (± 0.50 mm available on 750 - 2000 mm width)

 

Nominal width w

Normal tolerances

Special tolerances (S)

 

Under

Over

Under

Over

w ≤ 1200

0

4

0

2

1200 < w ≤ 1500

0

5

0

2

w > 1500

0

6

0

3

 

Out-of-squareness (products supplied as cut sheets only)

The deviation does not exceed 1% of the actual width of the sheet according to the EN 10131: 2006 standard. The deviation from the edge camber does not exceed 5mm for a length of 2 metres as specified in EN 10131: 2006.

 

Flatness (products supplied as skin-passed cut sheets only)

Flatness complies with EN 10131: 2006
If there is a dispute about the flatness of material that was ordered to the special tolerances shown in table 8 of EN 10131: 2006, then the minimum acceptable standards of flatness described below must be verified.
Criteria in case of disputes over special (FS) flatness tolerances (ReL < 260 N/mm2)

Dimensions in mm.

Nominal width

Edge-wave length

Maximum acceptable wave height

< 1500

> 200

< 1% of edge-wave length

≥ 1500

> 200

< 1.5% of edge-wave length

< 200

 2mm

 

Winding

For winding, there may be a maximum width gap of 3mm between two con­se­cutive windings. The total width stagger across the coil wall will not exceed 10mm.

 

Dimensions and coil weights

Tata Steel can supply cold-rolled steel with the following minimum and maximum dimensions and coil weights.

Description Availability
Coil diameter inner 610mm
(508mm available on request)
Coil diameter outer 10/7 x width max
1000mm min.
2800mm max.
Coil weight 30 t max.
30 - 45 t max available after consultation
Coil weight limited by maximum outer diameter
Maximum weight allowed by road/rail transport
Some products may have different coil weight ranges available
Usually a minimum coil weight up to 85% of the maximum coil weight can be requested
KIM: width ≤ 1200mm 11.9 - 21.5 kg/mm width
KIM: 1200mm < width ≤ 1700mm 11.9 - 21 kg/mm width
KIM: width > 1700mm 10.3 kg/mm width and 11.9 - 21 kg/mm width
Minimum tonnage per order Refer to price list for order quantity details
Minimum order quantities may apply

 

 

Coil welds

For batch-annealed coils, in general, pickling line welds are included. The number of permissible recoiling line welds is determined in consultation with the customer. If welds are permitted, Tata Steel is better able to implement the best coil weight. A recoiling line weld is marked with a single hole in the centre of the strip, close to the weld. On request the identifying hole can be left out. Coils with welds are available on continuously-annealed products – please contact us for details. You can find details on how to get in touch with us in 'Contact Us' below.