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Technical Library

Round Bar Data

Diameter versus kg/m, drawn-bar tolerances and extruded-bar tolerances by alloy group.

Weight reference

Dia (mm)kg/mDia (in)kg/ft
100.6173/8″0.42
161.585/8″1.07
253.851″2.62
5015.42″10.5
7534.73″23.6
10061.64″42.0

Rounds: dia² × 0.00623 per metre · Hex: A/F² × 0.00679 · Square: side² × 0.00787.

Tolerances — drawn bars

Diameter over (mm)Diameter up to (mm)Tolerance, drawn bars (mm)
=360 -0,08
6100 -0,09
10180 -0,11
18300 -0,13
30500 -0,16
50650 -0,19
65800 -0,30
801000 -0,35

Tolerances — extruded bars

Diameter over (mm)Diameter up to (mm)Alloy group I (mm)Alloy group II (mm)
=818+/- 0,22+/- 0,30
1825+/- 0,25+/- 0,35
2540+/- 0,30+/- 0,40
4050+/- 0,35+/- 0,45
5065+/- 0,40+/- 0,50
6580+/- 0,45+/- 0,70
80100+/- 0,55+/- 0,90
100120+/- 0,65+/- 1,00
120150+/- 0,80+/- 1,20
150180+/- 1,00+/- 1,40
180220+/- 1,15+/- 1,70
220270+/- 1,30+/- 2,00
270320+/- 1,60+/- 2,50

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