HOT ROLLED BARS, HEXAGONS AND OCTAGONS STAINLESS AND HEAT RESISTING STEELS

Specified SizeSize ToleranceOut of Round (1) or Out of square section (2)
OverUnder
In.mm.In.mm.In.mm.In.mm.
Over 1/4 to 5/16 (3)(4)6.35 to 7.94 incl.
(3)(4)
(5)(5)(5)(5)(5)(5)
Over 5/16
to 7/16 (3)(4)
7.94 to 11.11 incl. (3)(4)0.0060.150.0060.150.0090.23
Over 7.16 to
5/8 (3)(4)
11.11 to 15.88 incl. (3)(4)0.0070.180.0070.180.0100.25
Over 5/8 to 7/815.88 to 22.22 incl.0.0080.200.0080.200.0120.30
Over 7/8 to 122.22 to 25.40 incl.0.0090.230.0090.230.0130.33
Over 1 to 1 1/825.40 to 28.58 incl.0.0100.250.0100.250.0150.38
Over 1 1/8 to 1
1/4
28.58 to 31.75 incl.0.0110.280.0110.280.0160.41
Over 1 1/4 to 1 3/831.75 to 34.93 incl.0.0120.300.0120.300.0180.46
Over 1 3/8 to 1 1/234.93 to 38.10 incl.0.0140.360.0140.360.0210.53
Over 1 1/2 to 238.10 to 50.80 incl.1/640.401/640.400.0230.58
Over 2 to 2 1/250.80 to 63.50 incl.1/320.79000.0230.58
Over 2 1/2 to 3 1/263.50 to 88.90 incl.3/641.19000.0350.89
Over 3 1/2 to 4 1/288.90 to 114.3 incl.1/161.59000.0461.17
Over 4 1/2 to 5 1/2114.3 to 139.7 incl.5/641.98000.0581.47
Over 5 1/2 to 6
1/2
139.7 to 165.1 incl.1/83.18000.0701.78
Over 6 1/2 to 8165.1 to 203.2 incl.5/323.97000.0852.16
(ASTM A484)
  1. Out-of-round is the diffenence between the maximum and minimum diameters of the bar, measured at the same cross section.
  2. Out-of-square section is the difference in the two dimensions at the same cross section of a square bar, each dimension being the distance between opposite faces.
  3. Size tolerances for rounds in the size range of 1/4 in.(6.35 mm) to 5/16 (7.94 mm), incl., and for rounds in the size range of 1/4 in. (6.35 mm) to approximately 5/8 in. (15.88 mm) which are produced on rod mills in coils, are not shown.
  4. Variations in size of coiled product made on rod mills are greater than size tolerances for product made on bar mills
  5. Squares in this size are not proudced as hot rolled product.

HOT ROLLED BARS, HEXAGONS AND OCTAGONS STAINLESS AND HEAT RESISTING STEELS

Specified Sizes Measured Between Opposite SidesSize ToleranceMaximum
Difference 3 Measurements For Hexagons Only
OverUnder
In.mm.In.mm.In.mm.In.mm.
(ASTM A484)
Over 1/4 TO 1/26.35
TO 12.70 incl.
0.0070.180.0070.180.0110.28
Over 1/2 to 112.70 to 25.40 incl.0.0100.250.0100.250.0150.38
Over 1 to 1 1/225.40 to 38.10 incl.0.0210.530.0210.530.0250.64
Over 1 1/2 to 238.10 to 50.80 incl.1/320.791/320.791/320.79
Over
2 to 2 1/2
50.80 to 63.50 incl.3/641.193/641.193/641.19
Over
2 1/2 to 3 1/2
63.50 to 88.90 incl.1/161.591/161.591/161.59

HOT ROLLED BARS, FLATS STAINLESS AND HEAT RESISTING STEELS

Specified WidthsThickness
Tolerances, In., For Thicknesses Given
Width Tolerance, In.
In1/8 to 1/2 Incl.Over 1/2 to 1 incl.Over 1 to 2 incl.Over 2 to 4
Incl.
Over 4 to 6 Incl.Over 4 to 8 Incl.
Over
and Under
OverUnderOverUnderOverUnderOverUnder
Up
to 1 incl.
0.0080.0100.0150.015
Over 1 to 2 incl.0.0120.0150.0310.0310.031
Over 2 to 4 incl.0.0150.0200.0310.0620.0310.0620.031
Over 4 to 6 incl.0.0150.0200.0310.0620.0310.0930.0620.0930.062
Over 6 to 8 incl.0.0160.0250.0310.0620.0310.0930.0620.1250.1560.1250.156
Over 8 to 10
incl.
0.0210.0310.0310.0620.0310.0930.0620.1250.1560.1560.187
(ASTM A484)