Shape and dimensional tolerances

The specified values for wide strip do not apply to the uncropped ends of the coil (‘head’ and ‘tail’). The length of these uncropped ends is calculated using the following formula:

length (in metres) = 90/nominal thickness (in mm), with a maximum of 20 metres.

If required, this part of the coil can be removed, however an additional cost may be charged for this.

 

Tolerances on thickness

Tata Steel can supply to full thickness tolerance specified in EN 10051:2010.

Tighter tolerances are available as shown below:

Product family	Thickness tolerances available (% of full EN 10051:2010 tolerance)
	100%	75%	66%	50%
Steel for forming	Yes	Yes	Yes	(see note 1)
High-strength low-alloy (HSLA)	Yes	Yes	Yes	Yes
AHSS	Yes	Yes	Yes	Yes
Structural steel	Yes	Yes	Yes	Yes
Boron manganese steel	Yes	Yes	Yes
Steel for gas cylinders	Yes

¹ Please contact us for tolerances below 66%
Please contact us on the availability of special tolerances to meet your requirements.

 

Tolerances on thickness for hot-rolled steel with a low carbon content for cold forming
(DD11-DD14 in EN 10111:2008)

Nominal thickness		Tolerances for a nominal width of
		≤ 1200	> 1200	> 1500	> 1800
			≤ 1500	≤ 1800
	≤ 2.00	± 0.13	± 0.14	± 0.16	-
> 2.00	≤ 2.50	± 0.14	± 0.16	± 0.17	± 0.19
> 2.50	≤ 3.00	± 0.15	± 0.17	± 0.18	± 0.20
> 3.00	≤ 4.00	± 0.17	± 0.18	± 0.20	± 0.20
> 4.00	≤ 5.00	± 0.18	± 0.20	± 0.21	± 0.22
> 5.00	≤ 6.00	± 0.20	± 0.21	± 0.22	± 0.23
> 6.00	≤ 8.00	± 0.22	± 0.23	± 0.23	± 0.26
> 8.00	≤ 11.00	± 0.24	± 0.25	± 0.25	± 0.28

All dimensions are mm.

Tolerances on thickness of steel grades with a specified minimum yield strength
R_e ≤ 300 N/mm² (category A)

Nominal thickness		Tolerances for a nominal width of
		≤ 1200	> 1200	> 1500	> 1800
			≤ 1500	≤ 1800
	≤ 2.00	± 0.17	± 0.19	± 0.21	-
> 2.00	≤ 2.50	± 0.18	± 0.21	± 0.23	± 0.25
> 2.50	≤ 3.00	± 0.20	± 0.22	± 0.24	± 0.26
> 3.00	≤ 4.00	± 0.22	± 0.24	± 0.26	± 0.27
> 4.00	≤ 5.00	± 0.24	± 0.26	± 0.28	± 0.29
> 5.00	≤ 6.00	± 0.26	± 0.28	± 0.29	± 0.31
> 6.00	≤ 8.00	± 0.29	± 0.30	± 0.31	± 0.35
> 8.00	≤ 10.00	± 0.32	± 0.33	± 0.34	± 0.40
> 10.00	≤ 12.50	± 0.35	± 0.36	± 0.37	± 0.43
> 12.50	≤ 15.00	± 0.37	± 0.38	± 0.40	± 0.46
> 15.00	≤ 25.00	± 0.40	± 0.42	± 0.45	± 0.50

All dimensions are mm.

Tolerances on thickness of steel grades with a specified minimum yield strength
300 N/mm² < R_e ≤ 360 N/mm² (category B)

Nominal thickness		Tolerances for a nominal width of
		≤ 1200	> 1200	> 1500	> 1800
			≤ 1500	≤ 1800
	≤ 2.00	± 0.20	± 0.22	± 0.24	-
> 2.00	≤ 2.50	± 0.21	± 0.24	± 0.26	± 0.29
> 2.50	≤ 3.00	± 0.23	± 0.25	± 0.28	± 0.30
> 3.00	≤ 4.00	± 0.25	± 0.28	± 0.30	± 0.31
> 4.00	≤ 5.00	± 0.28	± 0.30	± 0.32	± 0.33
> 5.00	≤ 6.00	± 0.30	± 0.32	± 0.33	± 0.36
> 6.00	≤ 8.00	± 0.33	± 0.35	± 0.36	± 0.40
> 8.00	≤ 10.00	± 0.37	± 0.38	± 0.39	± 0.46
> 10.00	≤ 12.50	± 0.40	± 0.41	± 0.43	± 0.49
> 12.50	≤ 15.00	± 0.43	± 0.44	± 0.46	± 0.53
> 15.00	≤ 25.00	± 0.46	± 0.48	± 0.52	± 0.58

All dimensions are mm.

Tolerances on thickness of steel grades with a specified minimum yield strength
360 N/mm² < R_e ≤ 420 N/mm² (category C)

Nominal thickness		Tolerances for a nominal width of
		≤ 1200	> 1200	> 1500	> 1800
			≤ 1500	≤ 1800
	≤ 2.00	± 0.22	± 0.25	± 0.27	-
> 2.00	≤ 2.50	± 0.23	± 0.27	± 0.30	± 0.33
> 2.50	≤ 3.00	± 0.26	± 0.29	± 0.31	± 0.34
> 3.00	≤ 4.00	± 0.29	± 0.31	± 0.34	± 0.35
> 4.00	≤ 5.00	± 0.31	± 0.34	± 0.36	± 0.38
> 5.00	≤ 6.00	± 0.34	± 0.36	± 0.38	± 0.40
> 6.00	≤ 8.00	± 0.38	± 0.39	± 0.40	± 0.46
> 8.00	≤ 10.00	± 0.42	± 0.43	± 0.44	± 0.52
> 10.00	≤ 12.50	± 0.46	± 0.47	± 0.48	± 0.56
> 12.50	≤ 15.00	± 0.48	± 0.49	± 0.52	± 0.60
> 15.00	≤ 25.00	± 0.52	± 0.55	± 0.59	± 0.65

All dimensions are mm.

Tolerances on thickness of steel grades with a specified minimum yield strength
420 N/mm² < R_e ≤ 900 N/mm² (category D)

Nominal thickness		Tolerances for a nominal width of
		≤ 1200	> 1200	> 1500	> 1800
			≤ 1500	≤ 1800
	≤ 2.00	± 0.24	± 0.27	± 0.29	-
> 2.00	≤ 2.50	± 0.25	± 0.29	± 0.32	± 0.35
> 2.50	≤ 3.00	± 0.28	± 0.31	± 0.34	± 0.36
> 3.00	≤ 4.00	± 0.31	± 0.34	± 0.36	± 0.38
> 4.00	≤ 5.00	± 0.34	± 0.36	± 0.39	± 0.41
> 5.00	≤ 6.00	± 0.36	± 0.39	± 0.41	± 0.43
> 6.00	≤ 8.00	± 0.41	± 0.42	± 0.43	± 0.49
> 8.00	≤ 10.00	± 0.45	± 0.46	± 0.48	± 0.56
> 10.00	≤ 12.50	± 0.49	± 0.50	± 0.52	± 0.60
> 12.50	≤ 15.00	± 0.52	± 0.53	± 0.56	± 0.64
> 15.00	≤ 25.00	± 0.56	± 0.59	± 0.63	± 0.70

All dimensions are mm.

Tolerances on width

Tolerances in mm.

Nominal width w
	Mill edges		Trimmed edges
	lower	upper	lower	upper
w ≤ 1200	0	20	0	3
1200 < w ≤ 1850	0	20	0	5
w > 1850	0	25	0	6

Tolerances  in mm for wide strip and slit wide strip
The tolerances for wide strip and slit wide strip comply with standard EN 10051:2010.

The specified values for wide strip do not apply to the uncropped ends of the coil (‘head’ and ‘tail’). The length of these uncropped ends is calculated using the following formula:
length (in metres) = 90/nominal thickness (in mm), with a maximum of 20 metres.

If required, this part of the coil can be removed, however an additional cost may be charged for this.

Edge camber

The deviation from the edge over a length of 5000mm:

• with mill edges, no more than 20mm
• with trimmed edges, no more than 15mm

Flatness

Requirements as regards flatness can be agreed at the time of enquiry.

Option for maximum crown values

The following high crown C40 options available for hot-rolled products.

Crown values on the C20-position as well as minimum crown values on both C20 and C40 position are also available on request.

 

Maximum Crown C40 in µm values for hot-rolled steel with a low carbon content for cold forming
(DD11-DD14 in EN 10111:2008)

Category 1		C40
Nominal Thickness		≤ 1200	> 1200	> 1500	> 1800
			≤ 1500	≤ 1800
> 1.47	≤ 2.00	40	40	40	40
> 2.00	≤ 2.50	40	40	50	50
> 2.50	≤ 3.00	40	40	50	50
> 3.00	≤ 6.00	40	50	50	50
> 6.00	≤ 11.00	50	50	50	50

 

Maximum Crown C40 in µm values of structural steel grades
(S185-S235-S275 ≤ 10mm in EN 10025-2:2004)

Category 2		C40
Nominal Thickness		≤ 1200	> 1200	> 1500	> 1800
			≤ 1500	≤ 1800
> 1.47	≤ 2.00	40	40	40	40
> 2.00	≤ 2.50	40	40	50	50
> 2.50	≤ 20.00	50	50	50	50

 

Maximum Crown C40 in µm values of structural steel grades(S275 > 10mm in EN 10025-2:2004)
 and HSLA grades (S315MC in EN 10149-2:1996)

Category 3		C40
Nominal Thickness		≤ 1200	> 1200	> 1500	> 1800
			≤ 1500	≤ 1800
> 1.47	≤ 2.00	50	50	60	60
> 2.00	≤ 2.50	50	60	60	60
> 2.50	≤ 3.00	50	60	60	60
> 3.00	≤ 20.00	60	60	70	70

 

Maximum Crown C40 in µm values of HSLA grades
 (S355MC, S420MC, S460MC, S500MC, S550MC in EN 10149-2:1996)

Category 4		C40
Nominal Thickness		≤ 1200	> 1200	> 1500	> 1800
			≤ 1500	≤ 1800
> 1.47	≤ 2.00	60	70	70	70
> 2.00	≤ 2.50	60	70	80	80
> 2.50	≤ 3.00	60	70	80	80
> 3.00	≤ 5.00	70	70	80	80
> 5.00	≤ 20.00	80	80	80	80

 

Dimensions and coil weights

Tata Steel can supply hot-rolled steels with the following minimum and maximum dimensions and weights:

Description	Availability
Coil diameter inner non-pickled	762mm
Coil diameter inner pickled	610mm standard
Tolerance on inner diameter	+0/-50mm
Coil diameter outer non-pickled	Outer diameter available is 10/7 x width
	to reduce possibility of coil tipping over
	Max. 2200mm
	Min. 1050mm
Coil diameter outer pickled and oiled	Outer diameter available is 10/7 x width
	to reduce possibility of coil tipping over
	Outer diameter
	limit 2200mm
	Min. 1050mm
Coil weight	Max. 32 tonnes
	Additional maximum limits from transport
	limits and outer coil diameter
	Some HR products may have different
	coil weight ranges
Minimum tonnage per order	Please refer to price list for order quantity details
	Minimum order quantities may apply