Hot rolled plates · Size & tolerance table

Hot rolled plate thickness tolerances (EN 10029, formerly DIN 1543)

Standard: EN 10029 formerly DIN 1543

EN 10029 covers tolerances on dimensions, shape and mass of hot-rolled steel plates (rolled as plate on a reversing mill, as opposed to plate cut from coil, which is covered by EN 10051) from 3 to 250 mm thick. It replaced DIN 1543, whose “usual” and “limited lower deviation” columns became classes A and B.

The buyer chooses the class on the order. Class A is the default; class B, with a fixed −0.3 mm lower limit, is common for structural and pressure-vessel plate where the design uses the nominal thickness; C allows no under-thickness at all; D is symmetric.

Thickness tolerance classes

Thickness	Class A		Class B		Class C		Class D
Nominal thickness mm	Lower mm	Upper mm	Lower mm	Upper mm	Lower mm	Upper mm	Lower mm	Upper mm
≥ 3 < 5	− 0.4	+ 0.8	− 0.3	+ 0.9	0	+ 1.2	− 0.6	+ 0.6
≥ 5 < 8	− 0.4	+ 1.1	− 0.3	+ 1.2	0	+ 1.5	− 0.75	+ 0.75
≥ 8 < 15	− 0.5	+ 1.2	− 0.3	+ 1.4	0	+ 1.7	− 0.85	+ 0.85
≥ 15 < 25	− 0.6	+ 1.3	− 0.3	+ 1.6	0	+ 1.9	− 0.95	+ 0.95
≥ 25 < 40	− 0.8	+ 1.4	− 0.3	+ 1.9	0	+ 2.2	− 1.1	+ 1.1
≥ 40 < 80	− 1.0	+ 1.8	− 0.3	+ 2.5	0	+ 2.8	− 1.4	+ 1.4
≥ 80 < 150	− 1.0	+ 2.2	− 0.3	+ 2.9	0	+ 3.2	− 1.6	+ 1.6
≥ 150 ≤ 250	− 1.2	+ 2.4	− 0.3	+ 3.3	0	+ 3.6	− 1.8	+ 1.8

All four classes give the same total tolerance range for a thickness band; they differ only in where it sits.

Width tolerance, plate with cut edges

Nominal width mm	Lower mm	Upper mm
≥ 600 < 2000	0	+ 20
≥ 2000 < 3000	0	+ 25
≥ 3000 ≤ 4000	0	+ 30

Length tolerance

Nominal length mm	Lower mm	Upper mm
< 4000	0	+ 20
≥ 4000 < 6000	0	+ 30
≥ 6000 < 8000	0	+ 40
≥ 8000 < 10000	0	+ 50
≥ 10000 < 15000	0	+ 75
≥ 15000 ≤ 20000	0	+ 100

Notes

Flatness, the variation of thickness within one plate, out-of-squareness and mass tolerances are also given in EN 10029 and are not reproduced here.
Wider and longer plates than listed: tolerances are agreed at the order.