Straightness Tolerance for Hot Rolled Steel Bars

Rounds, Squares, Hexagons, Octagons, Flats, and SpringFlats
Measurement is taken on the concave side of the bar with a straight edge.
Normal Straightness Special Straightness
1/4" in any 5 feet 1/8" in any 5 feet
or or
1/4" x (length in feet / 5) 1/8" x (length in feet / 5)

NOTE:Because of warpage, straightness tolerances do not apply to bars if any subsequent heating operation or controlled cooling has been performed.
NOTE:Tolerances shown are based upon ASTMA29.

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