Configuration and tolerances for bar edges EN 13601

Square, hexagonal and flat bars may be supplied with sharp edges, rounded edges or semicircular edges. The type of edge shall be specified at the time of ordering.

Maximum radii for sharp corners of bars

Dimensions in millimetres

Nominal thickness or hexagon diagonal		Maximum edge radius
over	up to and including	Maximum edge radius
0,5^a	2	by agreement
2	6	0,3
6	10	0,4
10	18	0,5
18	30	0,6
30	80	0,8
^a Including 0,5.

1) SHARP EDGES

Sharp edges (SH), for square, hexagonal and flat bars, are according to Figure 1.

Figure 1 — Sharp edges

Radii for rounded corners of bars

Dimensions in millimetres

Specified thickness or hexagon diagonal		Edge radius	Radius tolerance
over	up to and including	Edge radius	Radius tolerance
0,5^a	1	^b	—
1	3	0,5	—
3	6	0,8	± 0,2
6	10	1,0	± 0,3
10	30	1,6	± 0,4
30	80	2,5	± 0,5
^a Including 0,5 ^b 0,5 x nominal thickness or width across flats

2) ROUNDED EDGES

Rounded edges (RD), for square, hexagonal and flat bars, are as shown in Figure 2.

Figure 2 - Rounded edges

3) SEMICIRCULAR EDGES

The radius of the semicircular edges (CE) of flat bars shall be half the thickness and shall comply with a tolerance of ± 20% of the radius; the arc of curvature shall merge smoothly into the adjacent flat surface and shall be free from sharp, rough or protruding edges.

Figure 3 - Semicircular edges