Flat steel
Material
Open-hearth steel, with the chemical composition and the mechanical characteristics according to DIN 17100, DIN 17200 and 17210.

Dimensions, weight and limit tolerances.
According to DIN 1017/1

Dimensions, weight and limit tolerances
Width a [mm] Thickness b [mm]
8 10 12 13 14 15 16 18 20 25 30 35 40 50
Value Limit tolerance Limit tolerances [mm]
± 0,5 ± 1,0 ± 1,5
Weight [Kg/m]
40 ± 1,0 2,51 3,14 - - - - - - - - 18,8 - 25,1 31,4
100 ± 1,5 - 7,85 9,42 10,2 11,0 11,8 12,6 14,1 15,7 19,6 23,6 - 31,4 39,3
110 ± 2,0 - 8,64 10,4 11,2 12,1 13,0 13,8 - 17,3 21,6 25,9 - 34,5 43,2
120 - 9,42 11,3 12,2 13,2 14,1 15,1 17,0 18,8 23,6 28,3 - 37,7 47,1
130 ± 2,5 - 10,2 12,2 13,3 14,3 15,3 16,3 - 20,4 25,5 30,6 - 40,8 51,0
140 - 11,0 13,2 - 15,4 16,5 17,6 - 22,0 27,5 33,0 38,5 44,0 55,0
150 - 11,8 14,1 15,3 16,5 17,7 18,8 12,2 23,6 29,4 35,3 - 47,1 58,9

Shape deviations
Maximum permissible deviation of the flatness

0,004 x L, for sections <= 1000 mm2
0,0025 x L, for sections > 1000 mm2
Off-squareness of the sides max. 5% of the thickness
Convexity of the side faces Within the thickness tolerances
Edge rounding with a radius of:

1 mm, for thickness <= 20 mm
5% of  thickness for thickness > 20 mm

Burrs due to cutting max. 8 mm

Delivery lengths.
Length types

Delivery lengths [m]

Permitted dev. [mm]
Manufacture lengths 3 - 7 -
Fixed lengths 3 - 12 ± 100

Delivery state, delivery
Delivery state Delivery
Rough rolled, straightened and without heat treatment Without packing and unprotected to corrosion, not bundled or in bundles with the weight of max.3 t.